1 Quick detail:
MF: W MW: 183.85 CAS: 7440-33-7 H.S.Code: 8101100090
UN: 3089 EINECS: 231-143-9 Place of region: China
2 Properties: dark gray powder, irregular fine particles, insoluble in water.
Content: ≥99.9% Specification: 200-300 mesh
Standard :GB/T3458-1982
Grade: FW-1, FW-23 Chemical Composition (%)
Grade FW-1 FW-2
Impurities(%)max. W ≥99.95 ≥99.9
Fe 0.0050 0.0300
Si 0.0020 0.0050
Ca 0.0020 0.0040
Al 0.0010 0.0040
Mn 0.0010 0.0020
Mg 0.0010 0.0040
Ni 0.0030 0.0040
Sb 0.0010 0.0010
Cr 0.0010 0.0040
As 0.0010 0.0020
Pb 0.0001 0.0005
Bi 0.0001 0.0005
Sn 0.0003 0.0005
Cu 0.0007 0.0010
Mo 0.0050 0.0100
K 0.0015 0.0015
Na 0.0015 0.0015
S 0.0010 0.0020
P 0.0010 0.0040
C 0.0050 0.0100
5 usage: used in the production of tungsten products, the contactor alloy, high proportion alloy, hard alloy, alloy additive, etc
honeyrose(at)cnsyte(dot)com
