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CAST UNS # WROUGHT ASTM C Mn Si P S Cr Ni Other Elements Tensile (ksi) Yield       (ksi) Elongation (%) Reduction of Area (%) Hardness (Brinell b)
70-30 CuNi C96400 --- B369 0.15 1.50 0.50 0.02 0.02 --- 28.0 - 32.0 Pb 0.01, Fe 0.25 -1.5, Nb 0.5 -1.5, Cu Bal 60 32 20 --- 145
Invar 36 --- --- --- 0.10 0.50 0.35 0.02 0.02 0.25 35.5 - 36.5 --- 48 31 42 --- 125