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PRODUCT DATA of AA5083-H32
MaterialAA5083-H32
General InformationVery good weldability. Very good corrosion resistance to seawater and marine atmosphere. High strength alloy with a strength slightly higher than 5086. High fatigue strength. Good cold and stretch formability in soft temper in relation to strength. Difficult to extrude in thin or complex sections. Can be produced in thick plates without internal stress.
Processing and AssemblyStrain hardened and stabilized to a quarter hard condition.
PrecautionsThe 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
Chemical CompositionAl-4.5Mg-0.7Mn-0.2Cr
EXPERIENCE IN PRACTICE
Development StatusCommercial Product
Cost RangeLow
Lot ReproducibilityGood
Equivalent DesignationsAlMg4.5Mn, A-G4.5MC, 3.3547, D54S, AA 5083
Space ExperienceGood
PHYSICAL PROPERTIES
Crystal StructureFace centered cubic (fcc)
Specific Gravity2.66
Magnetic PropertiesNonmagnetic
ELASTIC PROPERTIES
Tensile Modulus71 GPa
Shear Modulus26.8 GPa
ELECTRICAL PROPERTIES
Electrical Volume Resistivity6e-8 ohm.m
Electrical Conductivity28.5 %IACS
THERMAL PROPERTIES
Temperature Range66 C(maximum)
Thermal Conductivity117 W/m.K
Thermal Expansion Coefficient23.8 µstrain/°C
Melting Range580 to 640 °C
Specific Heat0.899 J/g.K
RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY
Stress Corrosion StatusModerate Resistance to SCC: Table 2
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