Al-Li 2090 vs 2618
Property comparison of Al-Li 2090 and 2618, both aluminum alloy.
| Property | Al-Li 2090 | 2618 | Difference |
|---|---|---|---|
| Yield strength | 482.5 MPa | 310.28 MPa | -36% |
| Tensile strength | 532.5 MPa | 399.91 MPa | -25% |
| Elongation | 2.1 % | 4 % | +90% |
| Elastic modulus | 79,700 MPa | 73,777 MPa | -7% |
| Shear modulus | 30,300 MPa | 28,269 MPa | -7% |
| Poisson ratio | 0.315 | 0.33 | +5% |
| Density | 2,590 kg/m³ | 2,768 kg/m³ | +7% |
Difference is 2618 relative to Al-Li 2090. Values are taken from the representative row of each material; both materials may have multiple heat treatments or conditions on their individual pages.
Identification
- grade
- 2090-T61
- standard
- NISTIR 3971
- heat treatment
- T61
- grade
- 2618
- standard
- MIL-HDBK-5J
- heat treatment
- Wrought
About 2xxx aluminum alloys
2xxx aluminum alloys are alloyed with copper. They reach the highest strengths in the wrought aluminum family but corrode faster than 5xxx or 6xxx and are difficult to weld. 2024 is the aerospace standard for skin and structure; 2014 is used for forgings.
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