Noble Ferro-alloys
Ferrochrome(FeCr)
Ferromolybdenum(FeMo)
Ferronickel(FeNi)
Ferroniobium(FeNb)
Ferrotitanium(FeTi)
Ferrotungsten(FeW)
Ferrovanadium(FeV)
Ferrotungsten
Ferrotungsten is a tungsten based master alloy for the production of special steels to increase their hardness, wear resistance and improve mechanical properties (heat resistance, etc). The raw materials for ferrotungsten production are rich ore or ore concentrates of wolframite or scheelite. Also artificial scheelite or soft scrap can be used. The tungsten trioxide in these compounds can be reduced either carbothermically in electric arc furnaces or metallothermically by silicon and/or aluminum. Also a mixed carbothermic-silicothermic production is in use.
Commercial ferrotungsten contains between 75 and 85 % W. It has a steel grey appearance and a fine-grained structure consisting of FeW and Fe2W
Available shapes:
- Lumps 10-50 mm / 10-100 mm 90% min
Available packing:
- 250/500 kg net drums on pallets / 1000 kg net big bags
Available specs:
- W min. 75%; C max. 1,00%; Si max. 0,50%; Mn max. 0,50%; P max. 0,050%; S max. 0,050%; Cu max. 0,20%; Pb max. 0,0050%; As max. 0,080%; Sn max. 0,050%; Bi max. 0,080%; Sb max. 0,080%.
- W min. 75%; C max. 1,00%; Si max. 0,60%; Mn max. 0,60%; P max. 0,050%; S max. 0,050%; Cu max. 0,20%; As + Sb + Sn. 0,20%; Sn max. 0,10%;
- Other specs are also available (FeW produced from scrap, etc.)
EU customs codes
EU customs code:7202 8000 00