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cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Uključi/isključi podsekciju Prednosti i nedostaci</span> </button> <ul id="toc-Prednosti_i_nedostaci-sublist" class="vector-toc-list"> <li id="toc-Usporedba_raznih_postupaka_ispitivanja_tvrdoće" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Usporedba_raznih_postupaka_ispitivanja_tvrdoće"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.1</span> <span>Usporedba raznih postupaka ispitivanja tvrdoće</span> </div> </a> <ul id="toc-Usporedba_raznih_postupaka_ispitivanja_tvrdoće-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Usporedba_s_Mohsovom_ljestvicom" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Usporedba_s_Mohsovom_ljestvicom"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Usporedba s Mohsovom ljestvicom</span> </div> </a> <ul id="toc-Usporedba_s_Mohsovom_ljestvicom-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Poveznice" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Poveznice"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Poveznice</span> </div> </a> <ul id="toc-Poveznice-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Izvori" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Izvori"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Izvori</span> </div> </a> <ul id="toc-Izvori-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Sadržaj" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" lang="sh-Latn" dir="ltr"> <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Prikaži/sakrij sadržaj" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Prikaži/sakrij sadržaj</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading" lang="sh-Latn" dir="ltr"><span class="mw-page-title-main">Tvrdoća po Vickersu</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" lang="sh-Latn" dir="ltr"> <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Prijedi na druge jezične varijante članka. Dostupno je na 36 jezika" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-36" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">36 jezika</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/Vickers_hardheidstoets" title="Vickers hardheidstoets — Afrikanerski" lang="af" hreflang="af" data-title="Vickers hardheidstoets" data-language-autonym="Afrikaans" data-language-local-name="Afrikanerski" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%A7%D8%AE%D8%AA%D8%A8%D8%A7%D8%B1_%D9%81%D9%8A%D9%83%D8%B1%D8%B2_%D9%84%D9%84%D8%B5%D9%84%D8%A7%D8%AF%D8%A9" title="اختبار فيكرز للصلادة — Arapski" lang="ar" hreflang="ar" data-title="اختبار فيكرز للصلادة" data-language-autonym="العربية" data-language-local-name="Arapski" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-arz mw-list-item"><a href="https://arz.wikipedia.org/wiki/%D8%A7%D8%AE%D8%AA%D8%A8%D8%A7%D8%B1_%D9%81%D9%8A%D9%83%D8%B1%D8%B2_%D9%84%D9%84%D8%B5%D9%84%D8%A7%D8%A8%D9%87" title="اختبار فيكرز للصلابه — Egyptian Arabic" lang="arz" hreflang="arz" data-title="اختبار فيكرز للصلابه" data-language-autonym="مصرى" data-language-local-name="Egyptian Arabic" class="interlanguage-link-target"><span>مصرى</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Assaig_de_duresa_Vickers" title="Assaig de duresa Vickers — Katalonski" lang="ca" hreflang="ca" data-title="Assaig de duresa Vickers" data-language-autonym="Català" data-language-local-name="Katalonski" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-ckb mw-list-item"><a href="https://ckb.wikipedia.org/wiki/%DA%A4%DB%8C%DA%A9%DB%95%D8%B1%D8%B3" title="ڤیکەرس — centralnokurdski" lang="ckb" hreflang="ckb" data-title="ڤیکەرس" data-language-autonym="کوردی" data-language-local-name="centralnokurdski" class="interlanguage-link-target"><span>کوردی</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Zkou%C5%A1ka_tvrdosti_podle_Vickerse" title="Zkouška tvrdosti podle Vickerse — Češki" lang="cs" hreflang="cs" data-title="Zkouška tvrdosti podle Vickerse" data-language-autonym="Čeština" data-language-local-name="Češki" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-de badge-Q70894304 mw-list-item" title=""><a href="https://de.wikipedia.org/wiki/Vickersh%C3%A4rte" title="Vickershärte — Nemački" lang="de" hreflang="de" data-title="Vickershärte" data-language-autonym="Deutsch" data-language-local-name="Nemački" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Vickers_hardness_test" title="Vickers hardness test — Engleski" lang="en" hreflang="en" data-title="Vickers hardness test" data-language-autonym="English" data-language-local-name="Engleski" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Dureza_Vickers" title="Dureza Vickers — Španski" lang="es" hreflang="es" data-title="Dureza Vickers" data-language-autonym="Español" data-language-local-name="Španski" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Vickersi_k%C3%B5vadus" title="Vickersi kõvadus — Estonski" lang="et" hreflang="et" data-title="Vickersi kõvadus" data-language-autonym="Eesti" data-language-local-name="Estonski" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%A2%D8%B2%D9%85%D9%88%D9%86_%D8%B3%D8%AE%D8%AA%DB%8C_%D9%88%DB%8C%DA%A9%D8%B1%D8%B2" title="آزمون سختی ویکرز — Persijski" lang="fa" hreflang="fa" data-title="آزمون سختی ویکرز" data-language-autonym="فارسی" data-language-local-name="Persijski" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Duret%C3%A9_Vickers" title="Dureté Vickers — Francuski" lang="fr" hreflang="fr" data-title="Dureté Vickers" data-language-autonym="Français" data-language-local-name="Francuski" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%A9%D7%99%D7%98%D7%AA_%D7%95%D7%99%D7%A7%D7%A8%D7%A1" title="שיטת ויקרס — Hebrejski" lang="he" hreflang="he" data-title="שיטת ויקרס" data-language-autonym="עברית" data-language-local-name="Hebrejski" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Tvrdo%C4%87a_po_Vickersu" title="Tvrdoća po Vickersu — Hrvatski" lang="hr" hreflang="hr" data-title="Tvrdoća po Vickersu" data-language-autonym="Hrvatski" data-language-local-name="Hrvatski" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Vickers-kem%C3%A9nys%C3%A9g" title="Vickers-keménység — Mađarski" lang="hu" hreflang="hu" data-title="Vickers-keménység" data-language-autonym="Magyar" data-language-local-name="Mađarski" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D5%8E%D5%AB%D6%84%D5%A5%D6%80%D5%BD%D5%AB_%D5%B4%D5%A5%D5%A9%D5%B8%D5%A4" title="Վիքերսի մեթոդ — Jermenski" lang="hy" hreflang="hy" data-title="Վիքերսի մեթոդ" data-language-autonym="Հայերեն" data-language-local-name="Jermenski" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Uji_kekerasan_Vickers" title="Uji kekerasan Vickers — Indonezijski" lang="id" hreflang="id" data-title="Uji kekerasan Vickers" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonezijski" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Scala_Vickers" title="Scala Vickers — Italijanski" lang="it" hreflang="it" data-title="Scala Vickers" data-language-autonym="Italiano" data-language-local-name="Italijanski" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%83%93%E3%83%83%E3%82%AB%E3%83%BC%E3%82%B9%E7%A1%AC%E3%81%95" title="ビッカース硬さ — Japanski" lang="ja" hreflang="ja" data-title="ビッカース硬さ" data-language-autonym="日本語" data-language-local-name="Japanski" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EB%B9%84%EC%BB%A4%EC%8A%A4_%EA%B5%B3%EA%B8%B0" title="비커스 굳기 — Korejski" lang="ko" hreflang="ko" data-title="비커스 굳기" data-language-autonym="한국어" data-language-local-name="Korejski" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%92%D0%B8%D0%BA%D0%B5%D1%80%D1%81%D0%BE%D0%B2%D0%B0_%D1%82%D0%B2%D1%80%D0%B4%D0%BE%D1%81%D1%82" title="Викерсова тврдост — Makedonski" lang="mk" hreflang="mk" data-title="Викерсова тврдост" data-language-autonym="Македонски" data-language-local-name="Makedonski" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Ujian_kekerasan_Vickers" title="Ujian kekerasan Vickers — Malajski" lang="ms" hreflang="ms" data-title="Ujian kekerasan Vickers" data-language-autonym="Bahasa Melayu" data-language-local-name="Malajski" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Vickershardheid" title="Vickershardheid — Holandski" lang="nl" hreflang="nl" data-title="Vickershardheid" data-language-autonym="Nederlands" data-language-local-name="Holandski" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Vickers_hardhetstest" title="Vickers hardhetstest — Norveški bokmål" lang="nb" hreflang="nb" data-title="Vickers hardhetstest" data-language-autonym="Norsk bokmål" data-language-local-name="Norveški bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Skala_twardo%C5%9Bci_Vickersa" title="Skala twardości Vickersa — Poljski" lang="pl" hreflang="pl" data-title="Skala twardości Vickersa" data-language-autonym="Polski" data-language-local-name="Poljski" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Dureza_Vickers" title="Dureza Vickers — Portugalski" lang="pt" hreflang="pt" data-title="Dureza Vickers" data-language-autonym="Português" data-language-local-name="Portugalski" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%9C%D0%B5%D1%82%D0%BE%D0%B4_%D0%92%D0%B8%D0%BA%D0%BA%D0%B5%D1%80%D1%81%D0%B0" title="Метод Виккерса — Ruski" lang="ru" hreflang="ru" data-title="Метод Виккерса" data-language-autonym="Русский" data-language-local-name="Ruski" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Trdota_po_Vickersu" title="Trdota po Vickersu — Slovenački" lang="sl" hreflang="sl" data-title="Trdota po Vickersu" data-language-autonym="Slovenščina" data-language-local-name="Slovenački" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/Tvrdo%C4%87a_po_Vikersu" title="Tvrdoća po Vikersu — Srpski" lang="sr" hreflang="sr" data-title="Tvrdoća po Vikersu" data-language-autonym="Српски / srpski" data-language-local-name="Srpski" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Vickersskala" title="Vickersskala — Švedski" lang="sv" hreflang="sv" data-title="Vickersskala" data-language-autonym="Svenska" data-language-local-name="Švedski" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/Vickers_hardness" title="Vickers hardness — Tajlandski" lang="th" hreflang="th" data-title="Vickers hardness" data-language-autonym="ไทย" data-language-local-name="Tajlandski" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Vickers_sertli%C4%9Fi" title="Vickers sertliği — Turski" lang="tr" hreflang="tr" data-title="Vickers sertliği" data-language-autonym="Türkçe" data-language-local-name="Turski" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%92%D0%B8%D0%BF%D1%80%D0%BE%D0%B1%D1%83%D0%B2%D0%B0%D0%BD%D0%BD%D1%8F_%D0%BD%D0%B0_%D1%82%D0%B2%D0%B5%D1%80%D0%B4%D1%96%D1%81%D1%82%D1%8C_%D0%B7%D0%B0_%D0%92%D1%96%D0%BA%D0%BA%D0%B5%D1%80%D1%81%D0%BE%D0%BC" title="Випробування на твердість за Віккерсом — Ukrajinski" lang="uk" hreflang="uk" data-title="Випробування на твердість за Віккерсом" data-language-autonym="Українська" data-language-local-name="Ukrajinski" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/Vikkers_usuli" title="Vikkers usuli — Uzbečki" lang="uz" hreflang="uz" data-title="Vikkers usuli" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="Uzbečki" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/%C4%90%E1%BB%99_c%E1%BB%A9ng_Vickers" title="Độ cứng Vickers — Vijetnamski" lang="vi" hreflang="vi" data-title="Độ cứng Vickers" data-language-autonym="Tiếng Việt" data-language-local-name="Vijetnamski" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E7%BB%B4%E6%B0%8F%E7%A1%AC%E5%BA%A6%E8%AF%95%E9%AA%8C" title="维氏硬度试验 — Kineski" lang="zh" hreflang="zh" data-title="维氏硬度试验" data-language-autonym="中文" data-language-local-name="Kineski" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet 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data-event-name="pinnable-header.vector-appearance.unpin">sakrij</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">Izvor: Wikipedija</div> </div> <div id="contentSub" lang="sh-Latn" dir="ltr"><div id="mw-content-subtitle" lang="sh-Latn" dir="ltr"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="sh-Latn" dir="ltr"><figure class="mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/Datoteka:Vickers-path-2.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4e/Vickers-path-2.svg/300px-Vickers-path-2.svg.png" decoding="async" width="300" height="346" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4e/Vickers-path-2.svg/450px-Vickers-path-2.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4e/Vickers-path-2.svg/600px-Vickers-path-2.svg.png 2x" data-file-width="520" data-file-height="600" /></a><figcaption>Prikaz ispitivanja <a class="mw-selflink selflink">tvrdoće po Vickersu</a>.</figcaption></figure> <figure class="mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/Datoteka:Case_hardened_steel-vickers_hardness_test.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/db/Case_hardened_steel-vickers_hardness_test.png/300px-Case_hardened_steel-vickers_hardness_test.png" decoding="async" width="300" height="225" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/db/Case_hardened_steel-vickers_hardness_test.png/450px-Case_hardened_steel-vickers_hardness_test.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/db/Case_hardened_steel-vickers_hardness_test.png/600px-Case_hardened_steel-vickers_hardness_test.png 2x" data-file-width="640" data-file-height="480" /></a><figcaption>Zbog netočnosti rada, nesavršenosti uzorka i sličnog (često puta je kvadrat iskrivljen), mjere se obje dijagonale kvadrata (<i>d<sub>1</sub></i> i <i>d<sub>2</sub></i>) i uzima se srednja vrijednost dijagonale <i>d</i>.</figcaption></figure> <figure class="mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/Datoteka:Vickers-tester.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Vickers-tester.jpg/300px-Vickers-tester.jpg" decoding="async" width="300" height="482" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Vickers-tester.jpg/450px-Vickers-tester.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Vickers-tester.jpg/600px-Vickers-tester.jpg 2x" data-file-width="747" data-file-height="1200" /></a><figcaption>Uređaj za ispitivanje tvrdoće po Vickersu.</figcaption></figure> <p><b>Tvrdoća po Vickersu</b> (oznaka: <b>HV</b>) je mjera otpornosti što ga neki <a href="/wiki/Materijal" title="Materijal">materijal</a> pruža prodiranju <a href="/wiki/Dijamant" title="Dijamant">dijamantne</a> četverostrane <a href="/wiki/Piramida_(geometrija)" title="Piramida (geometrija)">piramide</a> s vršnim <a href="/wiki/Kut" class="mw-redirect" title="Kut">kutom</a> od 136º, opterećene <a href="/wiki/Sila" title="Sila">silom</a> <i>F</i> (<a href="/wiki/Njutn" title="Njutn">N</a>). Taj je vršni kut odabran prema <a href="/wiki/%C4%8Celik" title="Čelik">čeličnoj</a> <a href="/wiki/Kugla" class="mw-redirect" title="Kugla">kuglici</a> <a href="/wiki/Promjer" title="Promjer">promjera</a> <i>D</i> (<a href="/wiki/Metar" title="Metar">mm</a>), koja se koristi kod ispitivanja <a href="/wiki/Tvrdo%C4%87a_po_Brinellu" title="Tvrdoća po Brinellu">tvrdoće po Brinellu</a>, a ostavlja udubljenje promjera <i>d</i> = 0,375 <i>D</i> (to odgovara prosječnoj vrijednosti donje i gornje granice promjera udubljenja, koje se kreće od 0,25 do 0,5 promjera kuglice <i>D</i>, unutar kojih su upotrebljivi rezultati ispitivanja tvrdoće po Brinellu). Udubljenje piramide daje <a href="/wiki/Kvadrat" title="Kvadrat">kvadrat</a> na površini uzorka, ali zbog netočnosti rada, nesavršenosti uzorka i sličnog (često puta je kvadrat iskrivljen), mjere se obje <a href="/w/index.php?title=Dijagonala&action=edit&redlink=1" class="new" title="Dijagonala (stranica ne postoji)">dijagonale</a> kvadrata (<i>d<sub>1</sub></i> i <i>d<sub>2</sub></i>) i uzima se srednja vrijednost dijagonale <i>d</i>. Zbog toga se rezultati ispitivanja tvrdoće po Brinellu i tvrdoće po Vickersu dobro podudaraju do 4500 <a href="/wiki/Njutn" title="Njutn">N</a>/<a href="/wiki/%C4%8Cetvorni_metar" class="mw-redirect" title="Četvorni metar">mm<sup>2</sup></a>. <sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p><p>Tvrdoća po Vickersu je razvijena u <a href="/wiki/Tvrtka" class="mw-redirect" title="Tvrtka">tvrtci</a> <i>Vickers Ltd.</i>, kao zamjena za ispitivanja tvrdoće po Brinellu. Tvrdoća po Vickersu (oznaka: HV) iskazuje se kao naprezanje na površini udubljenja: </p> <dl><dd><i>HV = F / A</i></dd></dl> <p>gdje je: <i>A</i> – površina udubljenja dijamantne četverostrane piramide (mm<sup>2</sup>), <i>F</i> – tlačna sila utiskivanja (N). Površina udubljenja dijamantne četverostrane piramide se može izračunati: </p> <dl><dd><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle A={\frac {d^{2}}{2\sin(136^{\circ }/2)}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>A</mi> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <msup> <mi>d</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </msup> <mrow> <mn>2</mn> <mi>sin</mi> <mo>⁡</mo> <mo stretchy="false">(</mo> <msup> <mn>136</mn> <mrow class="MJX-TeXAtom-ORD"> <mo>∘</mo> </mrow> </msup> <mrow class="MJX-TeXAtom-ORD"> <mo>/</mo> </mrow> <mn>2</mn> <mo stretchy="false">)</mo> </mrow> </mfrac> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle A={\frac {d^{2}}{2\sin(136^{\circ }/2)}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/8879757e182cc077ab846cb6bb898218b11c6d16" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.671ex; width:18.759ex; height:6.509ex;" alt="{\displaystyle A={\frac {d^{2}}{2\sin(136^{\circ }/2)}}}"></span></dd></dl> <p>ili približno: </p> <dl><dd><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle A\approx {\frac {d^{2}}{1,8544}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>A</mi> <mo>≈</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <msup> <mi>d</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </msup> <mrow> <mn>1</mn> <mo>,</mo> <mn>8544</mn> </mrow> </mfrac> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle A\approx {\frac {d^{2}}{1,8544}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/0da3cf424f32c22061f327859e5079f4f8b20598" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.338ex; width:12.524ex; height:6.176ex;" alt="{\displaystyle A\approx {\frac {d^{2}}{1,8544}}}"></span></dd></dl> <p>gdje je <i>d</i> - srednja vrijednost dijagonale <i>d = (d1 + d2)</i> / 2. Iz toga proizlazi: </p> <dl><dd><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle HV={\frac {F}{A}}\approx {\frac {1,8544F}{d^{2}}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>H</mi> <mi>V</mi> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mi>F</mi> <mi>A</mi> </mfrac> </mrow> <mo>≈</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow> <mn>1</mn> <mo>,</mo> <mn>8544</mn> <mi>F</mi> </mrow> <msup> <mi>d</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </msup> </mfrac> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle HV={\frac {F}{A}}\approx {\frac {1,8544F}{d^{2}}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/bcd166ef1f9dad49842fd0637fddad0c945b81e0" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.171ex; width:22.05ex; height:5.676ex;" alt="{\displaystyle HV={\frac {F}{A}}\approx {\frac {1,8544F}{d^{2}}}}"></span></dd></dl> <p>gdje je: <i>F</i> - tlačna sila utiskivanja (N). </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Ograničenja"><span id="Ograni.C4.8Denja"></span>Ograničenja</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Tvrdo%C4%87a_po_Vickersu&veaction=edit&section=1" title="Uredi odjeljak Ograničenja" class="mw-editsection-visualeditor"><span>uredi</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Tvrdo%C4%87a_po_Vickersu&action=edit&section=1" title="Uredi kôd odjeljka Ograničenja"><span>uredi kod</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Ograničenja su za ispitivanja tvrdoće po Vickersu: <sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p> <ul><li>debljina uzorka treba biti barem 8 puta veća od dubine utisnute dijamantne četverostrane piramide,</li> <li>trajanje povećanja sile do konačne vrijednosti iznosi 15 <a href="/wiki/Sekunda" class="mw-redirect" title="Sekunda">sekundi</a>, a njeno djelovanje traje 30 ili više sekundi,</li> <li>sila nije ograničena, a ona je rijetko veća od 1000 <a href="/wiki/Njutn" title="Njutn">N</a> (100 <a href="/wiki/Kilogram" title="Kilogram">kg</a>), a ponekad je i vrlo mala, svega nekoliko mN.</li></ul> <p>Zbog toga se nekad ispitivanje tvrdoće po Vickersu označuje oznakom xxxHVyy, kao na primjer 440HV30, ili xxxHVyy/zz, ako se trajanje sile razlikuje (na primjer od 10 s na 15 s, pa je oznaka 440Hv30/20). Vrijednosti znače: </p> <ul><li>440 – vrijednost tvrdoće po Vickersu (4400 N/mm<sup>2</sup>),</li> <li>HV – oznaka tvrdoće po Vickersu,</li> <li>30 – označuje vrijednost sile u kilogramima: 30 kg (294 N).</li> <li>20 - označuje trajanje sile ako se razlikuje od 10 s na 15 s.</li></ul> <table class="wikitable" border="1"> <caption>Primjeri vrijednosti HV za različite materijale:<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </caption> <tbody><tr> <th>Materijal</th> <th>Vrijednost </th></tr> <tr> <td>316L <a href="/wiki/Nehr%C4%91aju%C4%87i_%C4%8Delik" title="Nehrđajući čelik">nehrđajući čelik</a></td> <td>140HV30 </td></tr> <tr> <td>347L nehrđajući čelik</td> <td>180HV30 </td></tr> <tr> <td><a href="/wiki/Uglji%C4%8Dni_%C4%8Delik" class="mw-redirect" title="Ugljični čelik">Ugljični čelik</a></td> <td>55–120HV5 </td></tr> <tr> <td><a href="/wiki/%C5%BDeljezo" title="Željezo">Željezo</a></td> <td>30–80HV5 </td></tr></tbody></table> <div class="mw-heading mw-heading3"><h3 id="Ograničenja_ispitivanja_vezano_za_rub_uzorka"><span id="Ograni.C4.8Denja_ispitivanja_vezano_za_rub_uzorka"></span>Ograničenja ispitivanja vezano za rub uzorka</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Tvrdo%C4%87a_po_Vickersu&veaction=edit&section=2" title="Uredi odjeljak Ograničenja ispitivanja vezano za rub uzorka" class="mw-editsection-visualeditor"><span>uredi</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Tvrdo%C4%87a_po_Vickersu&action=edit&section=2" title="Uredi kôd odjeljka Ograničenja ispitivanja vezano za rub uzorka"><span>uredi kod</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Kod ispitivanja tvrdoće po Vickersu treba paziti na udaljenost između utisnute četverostrane piramide i ruba uzorka, da se izbjegne utjecaj rubova na tvrdoću uzorku. Najmanje udaljenosti za mjerenje se mogu naći u <a href="/wiki/Standard" title="Standard">standardima</a> <a href="/wiki/ISO" class="mw-redirect" title="ISO">ISO</a> 6507-1 i ASTM E384. </p> <table class="wikitable" border="1"> <tbody><tr> <th>Standard</th> <th>Najmanja udaljenost između otisaka</th> <th>Najmanja udaljenost od centra otiska do ruba uzorka </th></tr> <tr> <td>ISO 6507-1</td> <td>> 3·d za <a href="/wiki/%C4%8Celik" title="Čelik">čelik</a> i <a href="/wiki/Bakar_(element)" class="mw-redirect" title="Bakar (element)">bakrene</a> <a href="/wiki/Legura" title="Legura">legure</a> i > 6·d za lagane metale</td> <td>2.5·d čelik i bakrene legure i > 3·d za lagane metale </td></tr> <tr> <td>ASTM E384</td> <td>2.5·d</td> <td>2.5·d </td></tr> </tbody></table> <div class="mw-heading mw-heading2"><h2 id="Prednosti_i_nedostaci">Prednosti i nedostaci</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Tvrdo%C4%87a_po_Vickersu&veaction=edit&section=3" title="Uredi odjeljak Prednosti i nedostaci" class="mw-editsection-visualeditor"><span>uredi</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Tvrdo%C4%87a_po_Vickersu&action=edit&section=3" title="Uredi kôd odjeljka Prednosti i nedostaci"><span>uredi kod</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Vickers je svojom metodom uklonio glavne nedostatke Brinellove metode, pa je primjenom ove metode moguće mjeriti i najtvrđe materijale. Ovdje tvrdoća nije ovisna o primijenjenoj sili. Prvi nedostatak uklonjen je primjenom najtvrđeg materijala: dijamanta za utiskivač, a drugi <a href="/wiki/Geometrija" title="Geometrija">geometrijom</a> utiskivanja. Otisak je vrlo malen, pa ne oštećuje površinu (važno pri mjerenju tvrdoće gotovih proizvoda). Moguće je mjeriti i vrlo tanke uzorke primjenom male sile. Nadalje upotrebom male sile moguće je mjeriti tvrdoću pojedinih <a href="/wiki/Kristalno_zrno" title="Kristalno zrno">kristalnih zrna</a>. Vickersova metoda jedina je primjenjiva u <a href="/wiki/Znanost" class="mw-redirect" title="Znanost">znanstveno</a> - istraživačkom radu na području materijala. <sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p><p>Nedostatak je što osim finog brušenja, potrebno je i poliranje uzoraka, kao što se to radi u <a href="/wiki/Metalografija" title="Metalografija">metalografskoj</a> pripremi. Za mjerenje veličine otiska nije dovoljno <a href="/wiki/Pomi%C4%8Dno_mjerilo" class="mw-redirect" title="Pomično mjerilo">pomično mjerilo</a> kao kod Brinella, već mjerni <a href="/wiki/Mikroskop" title="Mikroskop">mikroskop</a>. </p> <div class="mw-heading mw-heading3"><h3 id="Usporedba_raznih_postupaka_ispitivanja_tvrdoće"><span id="Usporedba_raznih_postupaka_ispitivanja_tvrdo.C4.87e"></span>Usporedba raznih postupaka ispitivanja tvrdoće</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Tvrdo%C4%87a_po_Vickersu&veaction=edit&section=4" title="Uredi odjeljak Usporedba raznih postupaka ispitivanja tvrdoće" class="mw-editsection-visualeditor"><span>uredi</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Tvrdo%C4%87a_po_Vickersu&action=edit&section=4" title="Uredi kôd odjeljka Usporedba raznih postupaka ispitivanja tvrdoće"><span>uredi kod</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Postoje razni postupci za ispitivanja tvrdoće, a ponekad i nije moguće sasvim točno usporediti rane postupke, tako da slijedeća tablica daje približne vrijednosti, da bi se vrijednosti mogle usporediti: </p> <table class="wikitable"> <tbody><tr> <th>Tvrdoća po Brinellu <br />(10 mm kuglica, 3000 kg sila)</th> <th>Tvrdoća po Vickersu HV <br />(120 kg)</th> <th>Tvrdoća po Rockwellu HRC <br /> (120º stožac, 150 kg)</th> <th>Tvrdoća po Rockwellu HRB<br /> (1,5875 mm kuglica, 100 kg)</th> <th>Leeb HLD<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </th></tr> <tr> <td>800</td> <td>-</td> <td>72</td> <td>-</td> <td>857 </td></tr> <tr> <td>780</td> <td>1220</td> <td>71</td> <td>-</td> <td>850 </td></tr> <tr> <td>760</td> <td>1170</td> <td>70</td> <td>-</td> <td>843 </td></tr> <tr> <td>745</td> <td>1114</td> <td>68</td> <td>-</td> <td>837 </td></tr> <tr> <td>725</td> <td>1060</td> <td>67</td> <td>-</td> <td>829 </td></tr> <tr> <td>712</td> <td>1021</td> <td>66</td> <td>-</td> <td>824 </td></tr> <tr> <td>682</td> <td>940</td> <td>65</td> <td>-</td> <td>812 </td></tr> <tr> <td>668</td> <td>905</td> <td>64</td> <td>-</td> <td>806 </td></tr> <tr> <td>652</td> <td>867</td> <td>63</td> <td>-</td> <td>799 </td></tr> <tr> <td>626</td> <td>803</td> <td>62</td> <td>-</td> <td>787 </td></tr> <tr> <td>614</td> <td>775</td> <td>61</td> <td>-</td> <td>782 </td></tr> <tr> <td>601</td> <td>746</td> <td>60</td> <td>-</td> <td>776 </td></tr> <tr> <td>590</td> <td>727</td> <td>59</td> <td>-</td> <td>770 </td></tr> <tr> <td>576</td> <td>694</td> <td>57</td> <td>-</td> <td>763 </td></tr> <tr> <td>552</td> <td>649</td> <td>56</td> <td>-</td> <td>751 </td></tr> <tr> <td>545</td> <td>639</td> <td>55</td> <td>-</td> <td>748 </td></tr> <tr> <td>529</td> <td>606</td> <td>54</td> <td>-</td> <td>739 </td></tr> <tr> <td>514</td> <td>587</td> <td>53</td> <td>120</td> <td>731 </td></tr> <tr> <td>502</td> <td>565</td> <td>52</td> <td>119</td> <td>724 </td></tr> <tr> <td>495</td> <td>551</td> <td>51</td> <td>119</td> <td>719 </td></tr> <tr> <td>477</td> <td>534</td> <td>49</td> <td>118</td> <td>709 </td></tr> <tr> <td>461</td> <td>502</td> <td>48</td> <td>117</td> <td>699 </td></tr> <tr> <td>451</td> <td>489</td> <td>47</td> <td>117</td> <td>693 </td></tr> <tr> <td>444</td> <td>474</td> <td>46</td> <td>116</td> <td>688 </td></tr> <tr> <td>427</td> <td>460</td> <td>45</td> <td>115</td> <td>677 </td></tr> <tr> <td>415</td> <td>435</td> <td>44</td> <td>115</td> <td>669 </td></tr> <tr> <td>401</td> <td>423</td> <td>43</td> <td>114</td> <td>660 </td></tr> <tr> <td>388</td> <td>401</td> <td>42</td> <td>114</td> <td>650 </td></tr> <tr> <td>375</td> <td>390</td> <td>41</td> <td>113</td> <td>640 </td></tr> <tr> <td>370</td> <td>385</td> <td>40</td> <td>112</td> <td>635 </td></tr> <tr> <td>362</td> <td>380</td> <td>39</td> <td>111</td> <td>630 </td></tr> <tr> <td>351</td> <td>361</td> <td>38</td> <td>111</td> <td>621 </td></tr> <tr> <td>346</td> <td>352</td> <td>37</td> <td>110</td> <td>617 </td></tr> <tr> <td>341</td> <td>344</td> <td>37</td> <td>110</td> <td>613 </td></tr> <tr> <td>331</td> <td>335</td> <td>36</td> <td>109</td> <td>605 </td></tr> <tr> <td>323</td> <td>320</td> <td>35</td> <td>109</td> <td>599 </td></tr> <tr> <td>311</td> <td>312</td> <td>34</td> <td>108</td> <td>588 </td></tr> <tr> <td>301</td> <td>305</td> <td>33</td> <td>107</td> <td>579 </td></tr> <tr> <td>293</td> <td>291</td> <td>32</td> <td>106</td> <td>572 </td></tr> <tr> <td>285</td> <td>285</td> <td>31</td> <td>105</td> <td>565 </td></tr> <tr> <td>276</td> <td>278</td> <td>30</td> <td>105</td> <td>557 </td></tr> <tr> <td>269</td> <td>272</td> <td>29</td> <td>104</td> <td>550 </td></tr> <tr> <td>261</td> <td>261</td> <td>28</td> <td>103</td> <td>542 </td></tr> <tr> <td>258</td> <td>258</td> <td>27</td> <td>102</td> <td>539 </td></tr> <tr> <td>249</td> <td>250</td> <td>25</td> <td>101</td> <td>530 </td></tr> <tr> <td>245</td> <td>246</td> <td>24</td> <td>100</td> <td>526 </td></tr> <tr> <td>240</td> <td>240</td> <td>23</td> <td>99</td> <td>521 </td></tr> <tr> <td>237</td> <td>235</td> <td>23</td> <td>99</td> <td>518 </td></tr> <tr> <td>229</td> <td>226</td> <td>22</td> <td>98</td> <td>510 </td></tr> <tr> <td>224</td> <td>221</td> <td>21</td> <td>97</td> <td>505 </td></tr> <tr> <td>217</td> <td>217</td> <td>20</td> <td>96</td> <td>497 </td></tr> <tr> <td>211</td> <td>213</td> <td>19</td> <td>95</td> <td>491 </td></tr> <tr> <td>206</td> <td>209</td> <td>18</td> <td>94</td> <td>485 </td></tr> <tr> <td>203</td> <td>201</td> <td>17</td> <td>94</td> <td>482 </td></tr> <tr> <td>200</td> <td>199</td> <td>16</td> <td>93</td> <td>478 </td></tr> <tr> <td>196</td> <td>197</td> <td>15</td> <td>92</td> <td>474 </td></tr> <tr> <td>191</td> <td>190</td> <td>14</td> <td>92</td> <td>468 </td></tr> <tr> <td>187</td> <td>186</td> <td>13</td> <td>91</td> <td>463 </td></tr> <tr> <td>185</td> <td>184</td> <td>12</td> <td>91</td> <td>461 </td></tr> <tr> <td>183</td> <td>183</td> <td>11</td> <td>90</td> <td>459 </td></tr> <tr> <td>180</td> <td>177</td> <td>10</td> <td>89</td> <td>455 </td></tr> <tr> <td>175</td> <td>174</td> <td>9</td> <td>88</td> <td>449 </td></tr> <tr> <td>170</td> <td>191</td> <td>7</td> <td>87</td> <td>443 </td></tr> <tr> <td>167</td> <td>168</td> <td>6</td> <td>87</td> <td>439 </td></tr> <tr> <td>165</td> <td>165</td> <td>5</td> <td>86</td> <td>437 </td></tr> <tr> <td>163</td> <td>162</td> <td>4</td> <td>85</td> <td>434 </td></tr> <tr> <td>160</td> <td>159</td> <td>3</td> <td>84</td> <td>430 </td></tr> <tr> <td>156</td> <td>154</td> <td>2</td> <td>83</td> <td>425 </td></tr> <tr> <td>154</td> <td>152</td> <td>1</td> <td>82</td> <td>423 </td></tr> <tr> <td>152</td> <td>150</td> <td>-</td> <td>82</td> <td>420 </td></tr> <tr> <td>150</td> <td>149</td> <td>-</td> <td>81</td> <td>417 </td></tr> <tr> <td>147</td> <td>147</td> <td>-</td> <td>80</td> <td>413 </td></tr> <tr> <td>145</td> <td>146</td> <td>-</td> <td>79</td> <td>411 </td></tr> <tr> <td>143</td> <td>144</td> <td>-</td> <td>79</td> <td>408 </td></tr> <tr> <td>141</td> <td>142</td> <td>-</td> <td>78</td> <td>405 </td></tr> <tr> <td>140</td> <td>141</td> <td>-</td> <td>77</td> <td>404 </td></tr> <tr> <td>135</td> <td>135</td> <td>-</td> <td>75</td> <td>397 </td></tr> <tr> <td>130</td> <td>130</td> <td>-</td> <td>72</td> <td>390 </td></tr> <tr> <td>114</td> <td>120</td> <td>-</td> <td>67</td> <td>365 </td></tr> <tr> <td>105</td> <td>110</td> <td>-</td> <td>62</td> <td>350 </td></tr> <tr> <td>95</td> <td>100</td> <td>-</td> <td>56</td> <td>331 </td></tr> <tr> <td>90</td> <td>95</td> <td>-</td> <td>52</td> <td>321 </td></tr> <tr> <td>81</td> <td>85</td> <td>-</td> <td>41</td> <td>300 </td></tr> <tr> <td>76</td> <td>80</td> <td>-</td> <td>37</td> <td>287 </td></tr> </tbody></table> <div class="mw-heading mw-heading2"><h2 id="Usporedba_s_Mohsovom_ljestvicom">Usporedba s Mohsovom ljestvicom</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Tvrdo%C4%87a_po_Vickersu&veaction=edit&section=5" title="Uredi odjeljak Usporedba s Mohsovom ljestvicom" class="mw-editsection-visualeditor"><span>uredi</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Tvrdo%C4%87a_po_Vickersu&action=edit&section=5" title="Uredi kôd odjeljka Usporedba s Mohsovom ljestvicom"><span>uredi kod</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Usporedba <a href="/wiki/Mohsova_ljestvica" class="mw-redirect" title="Mohsova ljestvica">Mohsove ljestvice</a> s tvrdoćom po Vickersu: <sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </p> <table class="wikitable"> <tbody><tr> <th><a href="/wiki/Mineral" class="mw-redirect" title="Mineral">Mineral</a><br />(naziv) </th> <th><a href="/wiki/Mohsova_ljestvica" class="mw-redirect" title="Mohsova ljestvica">Mohsova tvrdoća</a> </th> <th>Tvrdoća po Vickersu (HV)<br />kg/mm<sup>2</sup> </th></tr> <tr> <td><a href="/wiki/Grafit" title="Grafit">Grafit</a></td> <td>1 – 2</td> <td>VHN<sub>10</sub> = 7 – 11 </td></tr> <tr> <td><a href="/wiki/Kositar" class="mw-redirect" title="Kositar">Kositar</a></td> <td>1,5</td> <td>VHN<sub>10</sub> = 7 – 9 </td></tr> <tr> <td><a href="/wiki/Bizmut" title="Bizmut">Bizmut</a></td> <td>2 – 2,5</td> <td>VHN<sub>100</sub> = 16 – 18 </td></tr> <tr> <td><a href="/wiki/Zlato" title="Zlato">Zlato</a></td> <td>2,5</td> <td>VHN<sub>10</sub> = 30 – 34 </td></tr> <tr> <td><a href="/wiki/Srebro" title="Srebro">Srebro</a></td> <td>2,5</td> <td>VHN<sub>100</sub> = 61 – 65 </td></tr> <tr> <td>Kalkocit</td> <td>2,5 – 3</td> <td>VHN<sub>100</sub> = 84 – 87 </td></tr> <tr> <td><a href="/wiki/Bakar_(element)" class="mw-redirect" title="Bakar (element)">Bakar</a></td> <td>2,5 – 3</td> <td>VHN<sub>100</sub> = 77 – 99 </td></tr> <tr> <td><a href="/w/index.php?title=Olovni_sjajnik&action=edit&redlink=1" class="new" title="Olovni sjajnik (stranica ne postoji)">Olovni sjajnik</a> (galenit)</td> <td>2,5</td> <td>VHN<sub>100</sub> = 79 – 104 </td></tr> <tr> <td><a href="/wiki/Sfalerit" title="Sfalerit">Sfalerit</a></td> <td>3,5 – 4</td> <td>VHN<sub>100</sub> = 208 – 224 </td></tr> <tr> <td>Hezlevodit</td> <td>4</td> <td>VHN<sub>100</sub> = 230 – 254 </td></tr> <tr> <td>Karolit</td> <td>4,5 – 5,5</td> <td>VHN<sub>100</sub> = 507 – 586 </td></tr> <tr> <td><a href="/wiki/Getit" title="Getit">Getit</a></td> <td>5 – 5,5</td> <td>VHN<sub>100</sub> = 667 </td></tr> <tr> <td><a href="/wiki/Hematit" title="Hematit">Hematit</a></td> <td>5 – 6</td> <td>VHN<sub>100</sub> = 1000 – 1100 </td></tr> <tr> <td>Kromit</td> <td>5,5</td> <td>VHN<sub>100</sub> = 1278 – 1456 </td></tr> <tr> <td>Anatas</td> <td>5,5 – 6</td> <td>VHN<sub>100</sub> = 616 – 698 </td></tr> <tr> <td>Rutil</td> <td>6 – 6,5</td> <td>VHN<sub>100</sub> = 894 – 974 </td></tr> <tr> <td><a href="/wiki/Pirit" title="Pirit">Pirit</a></td> <td>6 – 6,5</td> <td>VHN<sub>100</sub> = 1505 – 1520 </td></tr> <tr> <td>Boveit</td> <td>7</td> <td>VHN<sub>100</sub> = 858 – 1288 </td></tr> <tr> <td>Euklas</td> <td>7,5</td> <td>VHN<sub>100</sub> = 1310 </td></tr> <tr> <td><a href="/wiki/Krom" class="mw-redirect" title="Krom">Krom</a></td> <td>8,5</td> <td>VHN<sub>100</sub> = 1875 – 2000 </td></tr></tbody></table> <div class="mw-heading mw-heading2"><h2 id="Poveznice">Poveznice</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Tvrdo%C4%87a_po_Vickersu&veaction=edit&section=6" title="Uredi odjeljak Poveznice" class="mw-editsection-visualeditor"><span>uredi</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Tvrdo%C4%87a_po_Vickersu&action=edit&section=6" title="Uredi kôd odjeljka Poveznice"><span>uredi kod</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Tvrdo%C4%87a_kemijskih_elemenata" title="Tvrdoća kemijskih elemenata">Tvrdoća kemijskih elemenata</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="Izvori">Izvori</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Tvrdo%C4%87a_po_Vickersu&veaction=edit&section=7" title="Uredi odjeljak Izvori" class="mw-editsection-visualeditor"><span>uredi</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Tvrdo%C4%87a_po_Vickersu&action=edit&section=7" title="Uredi kôd odjeljka Izvori"><span>uredi kod</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r41378145">.mw-parser-output .reflist{font-size:90%;margin-bottom:0.5em;list-style-type:decimal}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a></span> <span class="reference-text"> "Strojarski priručnik", Bojan Kraut, Tehnička knjiga Zagreb 2009.</span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><a href="#cite_ref-2">↑</a></span> <span class="reference-text"> "Tehnička enciklopedija", glavni urednik Hrvoje Požar, Grafički zavod Hrvatske, 1987.</span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><a href="#cite_ref-3">↑</a></span> <span class="reference-text"> "Smithells Metals Reference Book", 8th Edition, ch. 22</span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><a href="#cite_ref-4">↑</a></span> <span class="reference-text"> <a rel="nofollow" class="external autonumber" href="http://www.vorax.hr/dokumenti/hr/mjer_tvr_hr.html">[1]</a> "Postupci mjerenja tvrdoće", www.vorax.hr/dokumenti/hr, 2011.</span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><a href="#cite_ref-5">↑</a></span> <span class="reference-text">H.Pollok, „Umwertung der Skalen“ (“Conversion of Scales”), Qualität und Zuverlässigkeit, Ausgabe 4/2008.</span> </li> <li id="cite_note-6"><span class="mw-cite-backlink"><a href="#cite_ref-6">↑</a></span> <span class="reference-text"> <a rel="nofollow" class="external autonumber" href="http://www.mindat.org">[2]</a> mindat.org </span> </li> </ol></div></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1&useformat=desktop" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="" lang="sh-Latn" dir="ltr">Izvor: <a dir="ltr" href="https://sh.wikipedia.org/w/index.php?title=Tvrdoća_po_Vickersu&oldid=27932447">https://sh.wikipedia.org/w/index.php?title=Tvrdoća_po_Vickersu&oldid=27932447</a></div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Posebno:Kategorije" title="Posebno:Kategorije">Kategorije</a>: <ul><li><a href="/wiki/Kategorija:Materijali" title="Kategorija:Materijali">Materijali</a></li><li><a href="/wiki/Kategorija:Metalurgija" 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