Tungsten belongs to the rare refractory metal with high melting point. Tungsten powder is the main raw material for production of tungsten carbide powder and tungsten wire.
China's major tungsten powder manufacturers distribute in Zhuzhou, Zigong, Nanchang, Lushun and Ganzhou. Except for domestic use, annual production of tungsten powder mainly is exported to Japan, Germany, the United States, Britain, Sweden and other countries.

Tungsten powder is steel gray metallic powder and its melting point is 3400 ℃, the boiling point is 4900 ℃. Tungsten powder is mainly used in the production of metal tungsten (tungsten wire, tungsten bar, etc), tungsten alloy products, tungsten carbide powder and electrical components as main raw material.

1. tungsten powder quality specifications

Category	W-1	W-2	W-3	W-4	W-5	W-6	W-7
Fisher average particle size(μ)	1～1.99	2～3.99	4～5.99	6～7.99	8～11.99	12～15.99	≥16
O2 %	≤0.4	≤0.3	≤0.25	≤0.25	≤0.25	≤0.20	≤0.20

2.tungsten powder chemical component indexes

Grade	W%	Ca%	K%	Mg%	Mo%	Na%	Si%	Fe%
FW-1	≥99.9	≤0.0040	≤0.0020	≤0.0010	≤0.0030	≤0.0030	≤0.0020	≤0.005
FW-2	≥99.8	≤0.0280	≤0.0020	≤0.0035	≤0.0050	≤0.0030	≤0.0070	≤0.015

 
Zhengzhou Sanhui Co., Ltd mainly deals in tungsten, molybdenum and other refractory metal products. Located Zhengzhou, we enjoy convenient railway, highway and air transportation.
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