Tungsten can not only reduce the elongation of steel to a small extent, but also increase the strength limit and yield point of steel. It can also improve the hardness and wear resistance of steel. Of particular importance is the good influence of tungsten on the high-temperature mechanical properties of steel, which improves heat resistance and tempering stability.
Ferrotungsten lump
The most common method of producing ferrotungsten is the "building block method", which uses carbon to reduce the oxides in the concentrate in an electric furnace, and then removes the solidified metal blocks from the furnace. There are also iron digging methods and thermite method.
| Grade | Chemical composition % | |||||||||||
| W | C | P | S | Si | Mn | Cu | As | Bi | Pb | Sb | Sn | |
| The following components are not greater than | ||||||||||||
| FeW80-A | 75.0~85.0 | 0.1 | 0.03 | 0.06 | 0.5 | 0.25 | 0.1 | 0.06 | 0.05 | 0.05 | 0.05 | 0.06 |
| FeW80-B | 75.0~85.0 | 0.3 | 0.04 | 0.07 | 0.7 | 0.35 | 0.12 | 0.08 | - | - | 0.05 | 0.08 |
| FeW80-C | 75.0~85.0 | 0.4 | 0.05 | 0.08 | 0.7 | 0.5 | 0.15 | 0.1 | - | - | 0.05 | 0.08 |
| FeW70 | ≥70.0 | 0.8 | 0.06 | 0.1 | 1 | 0.6 | 0.18 | 0.1 | - | - | 0.05 | 0.1 |
Size: 10-100mm 90% min. Special sizes available on request.
Packing: Iron drum, 50kg or 100kg net weight per drum.
