EN AW 7075
High-strength Rolled Plate EN AW 7075
|Alloy||EN AW 7075 [AlZn5,5MgCu]|
|Type of Alloy||heat-treatable|
|Temper||T6 / T651|
|Surface||mill-finished or brush-finished|
High-strength rolled plate EN AW 7075 (AlZn5.5MgCu) is probably the most famous (high-strength) rolled plate and is used regardless of the individual requirements in nearly all sectors of the capital goods industry. In material state T7351, it is also suitable for applications where there is a risk of stress corrosion cracking (SCC). The problem is the enormous strength and hardness drop across the plate cross section from about 4.7 in.mm in thickness.
- Very high strength (but drop of the core strength for plates >3.2 in. thickness)
- Ideally suited for structural etching
- Excellent polishing properties
- Very good machinability
For medium-sized series and mass production, in particular blow molds for plastics processing and PUR foam molds are preferably made of rolled plate EN AW 7075.
As with all highly-stressed components, e.g. tool carriers, tool changers, tool clamps, etc., rolled plate EN AW 7075 is often used.
Highly-loaded anvil caps, punch retainer and embossing plates are often made of rolled plate EN AW 7075.
Different versions of gripping claws, clamping and tensioning devices for heavy loads are produced from rolled plate EN AW 7075.
All rolled plates have directional properties and, in some cases, a serious decrease in strength and hardness from approximately 3.2 in. This can lead to distortion as early as in the machining process. Wherever possible, G.AL® products should be used.Sven Flaake, Technical Product Manager, GLEICH Aluminium