In addition to commercially pure Tantalum EAC also supplies Medical Grade Tantalum, and Tantalum Alloys Ta2.5%W, Ta7.5%W, Ta10%W, Ta40% Columbium (Niobium). Tantalum sheet is typically supplied to meet the requirements of ASTM-B-708, ASTM-F-560, AMS 7847, ISO 13782, RO5200, RO5400, RO5255, RO5252, RO5240.