| http://www.w3.org/ns/prov#value | - Examples of materials that can be considered include other metals, for example copper, nickel, aluminum monel, Hasteloy, and the like; plastics such as Teflon, Viton, kynar, polypropylene, polyethylene, and the like; and ceramics such as silicon carbide, alumina, diamond, fused quartz, borosilicate glass, plain or exotic glasses, and the like.
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