兑水 发表于 2009-9-13 19:25:20

ASTM B 637-2003 高温设备用沉淀淬火镍合金棒锻件及锻造坯料...

B637-03 Standard Specification for Precipitation-Hardening Nickel Alloy Bars, Forgings, and Forging Stock for High-Temperature Service
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