tantalum bar ASTM B365 standard:ASTM B365 RO5200,RO5400 RO5252 (Ta-2.5W) RO5255 (Ta- ... 10W) purity:99.95%,99.99% ISO9001:2008 tantalum bar ASTM B365Introduction:Tantalum is dark, dense, ductile, very hard, easily ... -±0.15 -400-1500 + 5>10-16±0.20 -±0.20 -300-1200 + 5>16-18±1.0 - -±0.30200-2000 + ... , sheet, rod, strip, plate, tube, alloys according to Standard ASTM AMS ASME MIL DMS JIS GB, etc.As a DNV ...