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The database includes thermoplastic and thermoset polymers, metals and alloys, ceramics, wood, fibers, stone, lubricants, inorganic salts, and other engineering materials. A wide range of <a href = "/search/search.aspx">search and comparison tools</a> are available to facilitate access to the data.</p> <p align="center"><a href="#Top">Back to Top</a></p> <a name="C3"></a><h2>Do you sell the materials on MatWeb?</h2> <p>We do not sell any of the materials in the database. Most data sheets have supplier listings that provide links to their respective suppliers...look for the <b>"Click here to view all available suppliers for this material."</b> link on the data sheet. Tell manufacturers that you saw their materials in MatWeb!</p> <p align="center"><a href="#Top">Back to Top</a></p> <a name="C4"></a><h2>Do I have to register?</h2> <p>MatWeb is freely available and does not require registration. The vast majority of our users have not found it necessary to register. 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A full list of these features can be found here: <a href="/membership/benefits.aspx">Benefits</a></p> <p align="center"><a href="#Top">Back to Top</a></p> <a name="C7"></a><h2>How do I request that MatWeb add data on certain materials?</h2> <p>We don't charge manufacturers/suppliers/compounders to add their technical data to MatWeb because we want to be as current and comprehensive as possible. Your company would benefit by getting exposure for your products in the widely used MatWeb database. We also welcome suggestions from users. Details on how to add materials can be found here: <a href="/services/submitdata.aspx">Add or Update Material Data</a></p> <p align="center"><a href="#Top">Back to Top</a></p> <a name="C8"></a><h2>How can I promote my company鈥檚 materials on MatWeb?</h2> <p>Advertise with MatWeb and benefit from:</p> <ul> <li>Targeted Demographics - Over 25,000 Users per Day</li> <li>Costs Commensurate with Exposure</li> <li>Contact Us for Specific Suggestions</li> </ul> Learn more about marketing opportunities on MatWeb by <a href="/services/advertising.aspx">online advertising to the materials community</a>. <p align="center"><a href="#Top">Back to Top</a></p> <a name="C9"></a><h2>Where does the information in MatWeb originate?</h2> <p>About 90% of the data sheets in MatWeb originate from testing by the manufacturers. Other data has been taken from handbooks, professional societies, and compilations/relationships by the MatWeb staff. 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Our <a href="/services/databaselicense.aspx"><b>online product selectors</b></a> have been licensed to improve clients <a href="/services/webhosting.aspx">web sites</a> since 1998.</p> <p align="center"><a href="#Top">Back to Top</a></p> <a name="C11"></a><h2>How did the MatWeb database get its start?</h2> <p>The MatWeb database was started by a group of engineers who were excited about having a comprehensive database with material properties at their fingertips, so that they could avoid searching through volumes of technical articles and books or waiting for faxes or phone calls to be returned. This small group of engineers has grown to <a href="http://www.aciwebs.com" target="resource_window">Automation Creations</a>. 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