... of forms including nut, screw, ring, wire, foil, sheet, rod, tube W-Ni-Fe alloy sheetApplications: * For producing electric light source parts ... ,components of electric vacuum; * For producing W-boats,heat shield and heat bodies in high temperature furnace ... of forms including nut, screw ,ring ,wire, foil, sheet, rod, strip, plate, tube, alloys according to Standard ASTM AMS ASME ...