Table 4.
Alloy Series | Type of Alloy | Ultimate Tensile Strength, MPa | Basic Properties |
---|---|---|---|
1xxx | Al (impurity content < 1%) | 70–150 | good plasticity in cold and elevated temperature forming, low strength, good corrosion resistance, high electrical and thermal conductivity |
2xxx | Al–Cu–Mg Al–Cu–Mg–Si |
170–530 | low corrosion resistance |
3xxx | Al–Mn–Mg | 140–280 | good plasticity but low strength, good weldability, and corrosion resistance |
4xxx | Al–Si | 100–360 | high strength and corrosion resistance, good casting properties |
5xxx | Al–Mg Al–Mg–Mn |
140–350 | good saltwater corrosion resistance, good weldability and analysability |
6xxx | Al–Mg–Si | 160–370 | high corrosion resistance, good formability, very good anodising ability |
7xxx | Al–Zn–Mg Al–Zn–Mg–Cu |
360–610 | the highest strength of all aluminium alloys, low and medium corrosion resistance |
8xxx | various alloying elements, Al–Li, Al–Fe, Al–Li–Cu–Mg | 260–580 | properties depending on the chemical composition |
9xxx | zinc and copper | Not specified | remarkable strength and superior mechanical properties depending on the specific alloy composition |