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  2. Jewelry hygiene - Wikipedia

    en.wikipedia.org/wiki/Jewelry_hygiene

    The relationship between wearing rings and the transmission of microorganisms is still unclear. The Centers for Disease Control and Prevention guideline has categorized this as an "unresolved issue" in need of additional research; [1] the draft WHO guidelines also do not have a stated recommendation against the wearing of rings but note that "the consensus recommendation is to discourage the ...

  3. Tungsten - Wikipedia

    en.wikipedia.org/wiki/Tungsten

    Tungsten's hardness and high density make it suitable for military applications in penetrating projectiles. Tungsten compounds are often used as industrial catalysts. Its largest use is in tungsten carbide, a wear-resistant metal used in metalworking, mining, and construction. [22]

  4. Tungsten carbide - Wikipedia

    en.wikipedia.org/wiki/Tungsten_carbide

    Tungsten carbide (chemical formula: WC) is a chemical compound (specifically, a carbide) containing equal parts of tungsten and carbon atoms. In its most basic form, tungsten carbide is a fine gray powder, but it can be pressed and formed into shapes through sintering [7] for use in industrial machinery, engineering facilities, [8] molding blocks, [9] cutting tools, chisels, abrasives, armor ...

  5. How to protect your engagement ring when you work out - AOL

    www.aol.com/lifestyle/protect-engagement-ring...

    However, where and how to store your ring when working out can be another issue. If it feels risky to leave it in the car or in a locker, there are other options.

  6. Refractory metals - Wikipedia

    en.wikipedia.org/wiki/Refractory_metals

    The high melting point and the wear resistance against the electric arc makes tungsten a suitable material for the electrode. [21] [22] Tungsten's high density and strength are also key properties for its use in weapon projectiles, for example as an alternative to depleted Uranium for tank gun rounds. [23]

  7. Body piercing materials - Wikipedia

    en.wikipedia.org/wiki/Body_piercing_materials

    If correctly shaped and manufactured, glass can be a functional material: [11] comfortable to wear, tough, and safe for the body. However, cheaper glass beads that unprotected can easily break into shards. If you drop glass jewelry on the floor, you probably won't be able to use it again.