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PRODUCT DATA of AA5086-H38
MaterialAA5086-H38
Processing and AssemblyStrain hardened and stabilized to a fully hard condition.
Chemical CompositionAl-4Mg-0.5Mn-0.2Cr
EXPERIENCE IN PRACTICE
Development StatusCommercial Product
Cost RangeLow
Lot ReproducibilityGood
Equivalent DesignationsAlMg4Mn;AlMg4;A-G4MC; A95086;3.3545; L-3322, AA 5086
Space ExperienceGood
PHYSICAL PROPERTIES
Crystal StructureFace centered cubic (fcc)
Specific Gravity2.67
Magnetic PropertiesNonmagnetic
ELASTIC PROPERTIES
Tensile Modulus71 GPa
Shear Modulus26.7 GPa
MECHANICAL PROPERTIES
Ultimate Tensile Strength360 MPa
Proof Stress (0.2%)305 MPa
Elongation9 %
Hardness110 Hv
ELECTRICAL PROPERTIES
Electrical Volume Resistivity5.6e-8 ohm.m
Electrical Conductivity31 %IACS
THERMAL PROPERTIES
Temperature Range66 °C(maximum)
Thermal Conductivity126 W/m.K
Thermal Expansion Coefficient23.8 μstrain/°C
Specific Heat0.9 J/g.K
Melting Range585 to 640 °C
RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY
General Corrosion StatusNo specific corrosion protection required
Stress Corrosion StatusModerate Resistance to SCC: Table 2
Remark: acc. to ECSS-Q-ST-70-36C
Data Quality: Design Data
EMF vs SCE-0.77 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
Remark: ECSS-Q-ST-70C Rev.1 table 5.1
Data Quality: Design Data
SPECIAL RECOMMENDATIONS
Lessons LearnedThe alloy is prohibited 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