Chemical Composition(%): W :above 99.95 Fe: below 0.01 Mo: below0.01 K: 75 to 90ppm other impurity, each below 0.02 All specifications for the items are according to the standard of Jiangxi Toshiba Metal Materials Co,.Ltd Type: finishing diameter range(MG/200mm) D as drawing 0.3-3016 E Electrolytic Polishing 0.4-3016 ES Electrolytic Polishing and straightening 0.4-3016 ssghellen(at)h0tm..l.c0m