No stain to copper and aluminium. Even they're easy to stain lightalloys.
不会腐蚀铜、铝以及它们极易受腐蚀的轻合金。
2
Sheet hydroforming improves forming limit, therefore, it's fit for manufacturing all Kings shape thinness shell components of lightalloys such as aluminum.
High strength aluminum alloys have the highest strength in room temperature which has very wide range of engineering applications, including aerospace, automobile, light railway traffic etc.