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PRODUCT DATA of AA2219-T
MaterialAA2219-T
Safety Datasheetmsds_aa2219
General InformationThis alloy was developed to provide for applications at temperatures up to 315 C
Product TypeMetal Alloy
Chemical CompositionCu 5.8 to 6.8%, Mn 0.2 to 0.4%, Rem. Al
Name of ManufacturerSeveral: e.g. Pechiney Rhenalu Issoire
EXPERIENCE IN PRACTICE
Development StatusCommercial Product
Cost RangeLow
Equivalent DesignationsAluminium-Copper-Manganese Alloy (ISO AlCu6Mn), AA 2219, EN573 AW-2219, DTD 5504A, A-U6MT
Space ExperienceGood
PHYSICAL PROPERTIES
Crystal StructureFace centered cubic (fcc)
Specific Gravity2.84
Magnetic PropertiesNonmagnetic
ELASTIC PROPERTIES
Tensile Modulus75.8 GPa
Shear Modulus27.8 GPa
Remark: For sheet and plate
Bulk Modulus80 GPa (estimate)
Speed of Sound (longitudinal)5100 m/s (estimate)
ELECTRICAL PROPERTIES
Electrical Volume Resistivity3.9e-8 to 6.2e-8 ohm.m
THERMAL PROPERTIES
Temperature Range217 °C(maximum)
Thermal Conductivity116 to 170 W/m.K
Thermal Expansion Coefficient22.3 µstrain/°C
Melting Range543 to 643 °C
RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY
General Corrosion StatusRequires specific corrosion protection
Atmospheric CorrosionRelatively poor resistance to corrosion. Protective finish always required
Stress Corrosion StatusHigh Resistance to SCC: Table 1
Remark: Resistant (refer to ECSS-Q-ST-70-36C). Tempers: T6 and T8 are considered to be Table 1 alloys
Data Quality: Design Data
Bimetallic CorrosionCan be used in a non-controlled environment with: Al+alloys, Cd, Sn-Pb alloys, Sn, Pb
Can be used in a clean room environment with: as above and Mg, Ni, Monel, Inconel, Ni-Mo alloys, 300 series SS, 400 series SS, Ti and Ti alloys, Zn, Be
Needs specific measures: All others
Remark: ECSS-Q-ST-70C Rev.1 table 5.1
Data Quality: Design Data
FLUID SYSTEMS COMPATIBILITY
Gaseous Oxygen (GOX)Untested
Liquid Oxygen (LOX)Untested
Nitrogen Tetroxide (N2O4)SCC susceptibility is low and no fluid decomposition
Hydrazine (HDZE)SCC susceptibility is low and no fluid decomposition
SPECIAL RECOMMENDATIONS
Special RecommendationsSolution treatment temperatures should be closely controlled as higher temperatures may cause solid solution grain boundary melting or eutectic melting which cannot be repaired by subsequent heat treatment.
The alloy can be satisfactorily welded by fusion and resistance welding techniques.
Reheat-treatment of clad material should be done carefully because copper tends to diffuse through the cladding layer to the surface, decreasing corrosion resistance.
Lessons LearnedIn some cases this alloy responds poorly to black anodising, due to the high copper content