All data is for information only------(Home)
PRODUCT DATA of AA7020-T6
MaterialAA7020-T6
General InformationHeat treatable high strength weldable alloy. High fatigue strength. High strength in welded structures.
EXPERIENCE IN PRACTICE
Equivalent DesignationsAA7005, AA 7005, AA 7020, AlZn4.5Mg1, A-Z5G, 3.4335, D74S
PHYSICAL PROPERTIES
Crystal StructureFace centered cubic (fcc)
Specific Gravity2.78
Magnetic PropertiesNonmagnetic
ELASTIC PROPERTIES
Tensile Modulus70 GPa
Shear Modulus26.4 GPa
THERMAL PROPERTIES
Thermal Conductivity140 W/m.K
Thermal Expansion Coefficient23.3 µstrain/°C
Melting Range605 to 645 °C
Specific Heat0.873 J/g.K
RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY
General Corrosion StatusRequires specific corrosion protection
Stress Corrosion StatusLow Resistance to SCC: Table 3
Remark:Including weldments
Data Quality: Design Data
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