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PRODUCT DATA of AA5056
MaterialAA5056
General InformationThe alloy does not respond to thermal hest treatments, but its strength can be increased by cold working. Aluminum 5056 has good resistance to rural, industrial and marine atmospheres and good corrosion resistance to most neutral fresh water, sea water, organic acids anhydrides and petroleum derivatives. The alloy exhibits good weldability and can be machined satisfactorily
PrecautionsTypical data covering several tempers. AA data not for design
Chemical CompositionAl-5Mg
EXPERIENCE IN PRACTICE
Development StatusCommercial Product
Cost RangeVery Low
Lot ReproducibilityVery Good
Equivalent DesignationsAlMg5, BS 2L.58, AA 5056
Space ExperienceGood
PHYSICAL PROPERTIES
Crystal StructureFace centered cubic (fcc)
Specific Gravity2.64
Magnetic PropertiesNonmagnetic
ELASTIC PROPERTIES
Tensile Modulus71 GPa
ELECTRICAL PROPERTIES
Electrical Volume Resistivity5.9e-8 to 6.4e-8 ohm.m
THERMAL PROPERTIES
Thermal Expansion Coefficient24.1 µstrain/°C
Melting Range571 to 638 °C
RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY
General Corrosion StatusRequires specific corrosion protection
Stress Corrosion StatusHigh Resistance to SCC: Table 1
Data Quality: Design Data
EMF vs SCE-0.79 V
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 LearnedThe alloy is not recommended for continuous service at temperatures above 66°C because of accelerated aging at elevated temperatures which may increase the susceptibility of the alloy to stress corrosion cracking