7021 T6 Aluminum Plate

7021 T6 Aluminum Plate

7021 aluminum is a 7000-series aluminum alloy: the main alloying addition is zinc and it is formulated for primary forming into wrought products. It is typically furnished in the T6 temper. To achieve this temper, the metal is solution heat-treated and artificially aged until it meets standard...

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7021 aluminum is a 7000-series aluminum alloy: the main alloying addition is zinc and it is formulated for primary forming into wrought products. It is typically furnished in the T6 temper. To achieve this temper, the metal is solution heat-treated and artificially aged until it meets standard mechanical property requirements. 7021 is the Aluminum Association (AA) designation for this material. In European standards, it will typically be given as EN AW-7021. Additionally, the EN chemical designation is AlZn5,5Mg1,5. And the UNS number is A97021.

 

 

Among wrought aluminum alloys, the composition of 7021 aluminum is notable for containing a comparatively high amount of zinc (Zn) and including zirconium (Zr). Zinc is used to achieve significant increases in strength, at the cost of increased susceptibility to stress corrosion cracking. Among other things, this limits weldability. Zirconium is used to increase an alloy's recrystallization temperature, which increases the temperature at which the alloy can be used without permanent loss of mechanical properties.

 

Chemical Composition:

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Technical Parameters:

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