AlZn5.5MgCu鋁錠 AlZn5.5MgCu鋁錠 AlZn5.5MgCu鋁錠 AlZn5.5MgCu鋁錠 AlZn5.5MgCu鋁錠 鑄造鋁合金按化學成分可分為鋁硅合金，鋁銅合金，鋁鎂合金和鋁鋅合金。