... refractory metals with two-phase composition consisting of W-Ni- Fe or W-Ni- Cu or even W-Ni-Cu ... -Fe, some tungsten alloys also contain Co, Mo, Cr, etc. They ... content: 85-97%, W-Ni-Fe, W-Ni-Cu 4. Surface: Sinter state, finish state 5. Application: balance weight, Military industry. Appliance of ...