Ferro Tungsten: 1.We supply FeW80A,FeW80-A FeW80-B,FeW80-C,FeW70 etc 2. competitive price, high quality DesignationChemical Composition%WCPSSiMnCuAsBiPbSbSn≤FeW80-A75.085.00.10.030.060.50.250.100.060.050.050.050.06FeW80-B75.085.00.30.040.070.70.350.120.08 0.050.08FeW80-C75.085.00.40.050.080.70.500.150.10 0.050.08FeW70≥70.00.80.060.101.00.600.180.10 0.050.10 Ferro Tungsten