tungsten rods grade: w1,w2,W-Ni-Fe, W-Ni-Cu, ... : ASTM B760, 777 any size are available tungsten bars material:W1,W2,WAL1,tungsten copper alloy, tungsten nickel copper, tungsten nickel iron alloystandard:ASTM B760, ASTM B777Dia ... time!I'm looking forward to hearing from you! pure tungsten bar/rod