Tungsten, when combined with carbon to form tungsten carbide, is nearly indestructible. Not even a 20-ton steamroller will make a dent.

September 24, 2017 at 09:51PM
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September 24, 2017 at 09:51PM
via Digg http://ift.tt/2xXRyuB
Tungsten Carbide Is Basically Indestructible
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September 24, 2017
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