90% ?8.73x50.8mm tungsten dart billet price is 3.60USD/PC on Jan. 22, 2020. The dart billets uses tungsten alloy material, so it has very high melting point and a density twice that of steel is more than 50% heavier than lead. Due to its high density, tungsten alloys offer greater radiation shielding than lead and is non-toxic. It is electrically and thermal conductive and offer good corrosion resistance. It also has a low coefficient of expansion and a high modulus of elasticity.

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