7249 vs Aluminum Alloy 7178-T76
Property comparison of 7249 and Aluminum Alloy 7178-T76, both aluminum alloy.
| Property | 7249 | Aluminum Alloy 7178-T76 | Difference |
|---|---|---|---|
| Yield strength | 468.86 MPa | 503 MPa | +7% |
| Tensile strength | 524.02 MPa | 572 MPa | +9% |
| Elongation | 12 % | 10 % | -17% |
| Elastic modulus | 69,640 MPa | 73,000 MPa | +5% |
| Shear modulus | 26,201 MPa | 26,000 MPa | -1% |
| Poisson ratio | 0.33 | 0.33 | 0% |
Difference is Aluminum Alloy 7178-T76 relative to 7249. 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
- 7249
- standard
- MIL-HDBK-5J
- heat treatment
- Wrought
- grade
- —
- standard
- ANSI
- heat treatment
- Wrought
About 7xxx aluminum alloys
7xxx aluminum alloys are alloyed with zinc and reach the highest strengths in the wrought family. Weldability is poor and corrosion resistance trails 5xxx and 6xxx. 7075 is the aerospace standard for highly loaded structure; 7050 trades a small amount of strength for better fracture toughness.
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