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Ferrotungsten

Ferrotungsten

Uses:


Ferrotungsten is used as an additive of tungsten element in tungsten steel and cast iron. Tungsten is an important alloy element in producing special steel. At the same time of moderately reducing the steel elongation, the steel strength limit and yield point can be improved; it can also improve the hardness and steel wear resistance. Alloy structural steel has a broader application scope, which can be used to produce gun pipe, high temperature spring, high-speed diesel engine crank and high-pressure boil steel pipe and so on. In recent years, welding rod manufacturing enterprises was also widely used.

  The product quality standard implements national standard GB/T3648—96
Appearance quality
The surface of tungsten iron should be smooth; there should be no obvious non-metallic inclusions and rust spots on the cross-section and surface.
Packing:

The product is packed in iron barrel and the net weight is 100kg each barrel.

Physical state
Block, with the size ranging from 10mm to 130mm, less than 10mm ×10mm. The particle amount should not exceed 5% of the total weight. The maximal size of some block is 150mm in the same direction. 
Grade and chemical composition

Grade

Chemical composition /%

W

C

P

S

Si

Mn

Cu

As

Bi

Pb

Sb

Sn

FeW80-A

75.0~85.0

0.10

0.03

0.06

0.5

0.25

0.10

0.06

0.05

0.05

0.05

0.06

FeW80-B

75.0~85.0

0.30

0.04

0.07

0.7

0.35

0.12

0.08

0.05

0.08

FeW80-C

75.0~85.0

0.40

0.05

0.08

0.7

0.50

0.15

0.10

0.05

0.08

FeW70

≥70.0

0.80

0.06

0.10

1.0

0.60

0.18

0.10

0.05

0.10


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