A2024 鋁合金ALMG5MN 5182 5251 ALMG2MN0.3 ALMG2MN0.8 5454 A5454P ALMG2.7MN 5754 ALMG3 3003 ALMG4.5MN 5083 0.5086 A5086P ALMG4MN 5086 0.5154 A5154P 5154A 3575 0.5182 A5182 ALMG2.5 0.5056 A5056 ALMG5 5056A 0.5082 A5082P ALMG4.5 5082 0.5083 A5083 ALMG4.5......