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PRODUCT DATA of AA7050-T7651
MaterialAA7050-T7651
General InformationAluminium-Zinc-Copper-magnesium Alloy which has a good combination of strength, fracture toughness and corrosion resistance
Processing and AssemblySolution heat treated, stress relieved by stretching a controlled amount (permanent set 1.5 to 3% for sheet and plate, 1 to 3% for rolled or cold finished rod and bar, 1 to 5% for hand or ring forging and rolled ring) and then artificially overaged in order to achieve a good exfolation corrosion resistance. The products recieve no further straightening after stretching
Product TypeWrought Al alloy Plate and extrusions
Chemical CompositionAl-6.2Zn-2.25Mg-2.3Cu-0.12Zr
Name of ManufacturerCorus Aluminium Wallzproducte GmbH
EXPERIENCE IN PRACTICE
Development StatusCommercial Product
Equivalent DesignationsAA 7050, UNS A97050
PHYSICAL PROPERTIES
Crystal StructureFace centered cubic (fcc)
Magnetic PropertiesNonmagnetic
THERMAL PROPERTIES
Melting Range488 to 629 °C
RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY
General Corrosion StatusRequires specific corrosion protection
Stress Corrosion StatusUnknown
Remark: Tested once. Moderate resistance in the T7651 condition in the ST direction: Class 2 Requires Stress corrosion evaluation form
Bimetallic CorrosionCan be used in a non-controlled environment: Al alloys, Cd
Can be used in a clean room environment: Mg, Sn-Pb alloys (all), Sn, Pb, Zn, Be
Needs specific measures: All others
Test:ECSS-Q-ST-70C Rev.1 Table 5.1
Data Quality: Design Data
SPECIAL RECOMMENDATIONS
Lessons LearnedIn some cases, this alloy responds poorly to black anodising