1.1 This specification covers hot- and cold-worked precipitation hardenable cobalt-containing alloys (UNS R30155 and UNS R30816) rod, bar, forgings, and forging stock for high-temperature service.
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
ASTM B639-1997由美国材料与试验协会 US-ASTM 发布于 1997。
ASTM B639-1997 在中国标准分类中归属于: H62 重金属及其合金。
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1.1 This specification covers hot- and cold-worked precipitation hardenable cobalt-containing alloys (UNS
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
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