Ferrotungsten
Properties
Tungsten is one of the important alloy elements which are used to make special steel. While tungsten reduce a little elongation rate of steel, Ferro-tungsten raises strength limit and yield point and also raises hardness and abrasion resistance of steel. Ferro-tungsten is very important that tungsten has good influence on high temperature mechanical properties of steel to improve heat resistance and tempering stability of steel
Chemical Compositions(GB/T3648-1996)
| Brand | Chemical Compositions (%) | |||||||||||
| 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 | 0.1 | 1.0 | 0.60 | 0.18 | 0.10 | – | – | 0.05 | 0.10 |
Notes: Ferrotungsten should be delivered in lump whose size range is from 10 to 130mm. the amount of debris whose size is less than 10mm×10mm should not exceed 5% of the total mass of this batch of products.
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