sigh007 发表于 2012-3-31 17:43:57

MIL-S-5626C


                   MIL-S-5626C, MILITARY SPECIFICATION: STEEL, CHROME-MOLYBDENUM (4140) BARS, RODS, AND FORGING STOCK (FOR AIRCRAFT APPLICATION) (17 JUL 1968) ., This specification covers chrome-molybdenum (4140) steel bars, rods, and forging stock of aircraft quality.         
         
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