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	0.10	1.0	0.60	0.18	0.10	-	-	0.05	0.10

Notes: Ferro-tungsten 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.