ASTM B708-12(R2019) pdf download
1.1 This specification covers unalloyed and alloyed tanta-lum plate, sheet, and strip as follows. 1.1.1 R05200, unalloyed tantalum, electron-beam furnace or vacuum-arc melt, or both, 1.1.2 R05400, unalloyed tantalum, powder-metallurgy consolidation,
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