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	PRODUCT DATA of AA2618-T851

Material

AA2618-T851

General Information

The 2618 aluminium alloy is a wrought alloy which responds to an age-hardening heat treatment.

Chemical Composition

Si 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 Manufacturer

Pechiney Rhenalu Issoire

	EXPERIENCE IN PRACTICE

Development Status

Commercial Product

Cost Range

Low

Equivalent Designations

AA 2618; AlCu2Mg1.5Fe1Ni1; A-U2GN, AU2GN; AlCu2Mg2Ni; LW3.1924; H16, Hiduminium RR; DTD717A, 724, 731A, 731B; 745A, 5084A, 5014A

	PHYSICAL PROPERTIES

Crystal Structure

Face centered cubic (fcc)

Specific Gravity

2.76

Magnetic Properties

Nonmagnetic

	MECHANICAL PROPERTIES

Ultimate Tensile Strength

441 MPa Data Quality: Typical Data

Proof Stress (0.2%)

372 MPa Data Quality: Typical Data

Elongation

10% Data Quality: Typical Data

	THERMAL PROPERTIES

Thermal Conductivity

147 W/m.K

Thermal Expansion Coefficient

22.3 µstrain/°C Remark: @ temperature 20-100 C

Melting Range

549 to 638 °C Solidus - Liquidus

	RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY

General Corrosion Status

Requires specific corrosion protection

Stress Corrosion Status

High 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 Corrosion

Can 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