牌號化學成分(質量分數)(%)SiFeCuMnMgCrNiZnTiZr其他Al(硅)(鐵)(銅)(錳)(鎂)(鉻)(鎳)(鋅)(鈦)(鋯)單個合計(鋁)2A110.70.73.8~4.80.40~0.80.40~0.8—0.10.3Fe+Ni:0.70.15—0.050.1餘量2B110.50.53.8~4.50.40~0.80.40~0.8
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牌號化學成分(質量分數)(%)SiFeCuMnMgCrNiZnTiZr其他Al(硅)(鐵)(銅)(錳)(鎂)(鉻)(鎳)(鋅)(鈦)(鋯)單個合計(鋁)20240.50.53.8~4.90.30~0.91.2~1.80.1—0.25③0.15—0.050.15餘量21240.20.33.8~4.90.30~0.91.2~1.80.1—0.25
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牌號化學成分(質量分數)(%)SiFeCuMnMgCrZnTi其他Al(硅)(鐵)(銅)(錳)(鎂)(鉻)(鋅)(鈦)單個合計(鋁)60701.0~1.70.50.15~0.400.40~1.00.50~1.20.10.25—0.150.050.15餘量61810.8~1.20.450.10.1560.6~1.00.10.2—0.10.050.15餘
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牌號化學成分(質量分數)(%)SiFeCuMnMgCrNiZnTiZr其他Al(硅)(鐵)(銅)(錳)(鎂)(鉻)(鎳)(鋅)(鈦)(鋯)單個合計(鋁)20170.20~0.80.73.5~4.50.40~1.00.40~0.80.1—0.25③0.15—0.050.15餘量2017A0.20~0.80.73.5~4.50.40~1.00.4
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