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6061 7075 5083 5052 6063 2①化学成分（质量分数）（%）SiFeCuMnMgCrZnTi单个合计Ai0.4~0.80.70.15~0.40.150.8~1.20.04~0.35
2012-04-09 电议/KG
①化学成分（质量分数）（%）SiFeCuMnMgCrZnTi单个合计Ai0.4~0.80.70.15~0.40.150.8~1.20.04~0.35
2012-04-09 电议/KG