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PRODUCT DATA of AA2618-T851
MaterialAA2618-T851
General InformationThe 2618 aluminium alloy is a wrought alloy which responds to an age-hardening heat treatment.
Chemical CompositionSi 0.1-0.25, Fe 0.9-1.3, Cu 1.9-2.7, Mg 1.3-1.8, Zn 0.1, Ni 0.9-1.2, Ti 0.04-0.1, Others: Each 0.05 Total 0.15, Rem. Al
Name of ManufacturerPechiney Rhenalu Issoire
EXPERIENCE IN PRACTICE
Development StatusCommercial Product
Cost RangeLow
Equivalent DesignationsAA 2618; AlCu2Mg1.5Fe1Ni1; A-U2GN, AU2GN; AlCu2Mg2Ni; LW3.1924; H16, Hiduminium RR; DTD717A, 724, 731A, 731B; 745A, 5084A, 5014A
PHYSICAL PROPERTIES
Crystal StructureFace centered cubic (fcc)
Specific Gravity2.76
Magnetic PropertiesNonmagnetic
THERMAL PROPERTIES
Thermal Conductivity147 W/m.K
Thermal Expansion Coefficient22.3 µstrain/°C
Remark: @ temperature 20-100 C
Melting Range549 to 638 °C
Solidus - Liquidus
RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY
General Corrosion StatusRequires specific corrosion protection
Stress Corrosion StatusHigh Resistance to SCC: Table 1
Remark: Resistant (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