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7040
AIMS 03-02-023 / AlZn6Mg2Cu2 / 7040 / T7651
Chemical Properties | % Value |
Silicon (Si) | 0,00 - 0,10 |
Chromium (Cr) | 0,00 - 0,04 |
Manganese (Mn) | 0,00 - 0,04 |
Magnesium (Mg) | 1,70 - 2,40 |
Copper (Cu) | 1,50 - 2,30 |
Titanium (Ti) | 0,00 - 0,06 |
Iron (Fe) | 0,00 - 0,13 |
Zinc (Zn) | 5,70 - 6,70 |
Aluminium (Al) | Balance |
Titanium + Zirconium (Ti+Zr) | 0,05 - 0,12 |
Physical Properties | Value |
Density | 2.85 g/cm³ |
Mechanical Properties | Value |
Proof Strength | 400 MPa |
Yield Strength | 450 MPa |
Elongation A50 mm | 7% |
Alloy 7040 is a variation of 7050, where Zr additions prevent recrystallization of hot-worked products during solution heat treatment without the quench sensitivity from additions of Cr.
7040-T7651 plates deliver an improved strength toughness balance compared to 7010 and 7050 alloys, and are ideal for structures needing high strength, high toughness, and good corrosion resistance, such as integrally machined spars, ribs, fuselage frames or other thick sections.
Choosing Factors for 7040 T7651
- Strength: Excellent
- Machining: Good
- Weldability: Poor
- Formability: Fair
- Corrosion Resistance: Good
- Heat Treating: Yes
Some Well-Known Applications for 7040 T7651
Mainly in the aerospace industry,
As components of beams and fittings,
It is also used as components of integrally machined main frame parts.
- Plate