sigh007 发表于 2012-3-29 11:52:22

MIL-S-6709A (AMENDMENT 2)


                   MIL-S-6709A (AMENDMENT 2), MILITARY SPECIFICATION, STEEL, CHROME-MOLYBDENUM-ALUMINUM; BARS, RODS, BILLETS AND FORGING STOCK (FOR NITRIDING) (AIRCRAFT QUALITY) (18 JUL 1968) .         
         
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