7039 aluminium alloy
AA 7039 is an aluminum alloy principally containing zinc (3.5–4.5%) as an alloying element. It is heat treatable wrought aluminum alloy. [1] It is used for making armour suites.
Chemical Composition
| No | Element [1] | Content (%) |
|---|---|---|
| 1 | Aluminum, Al | Remainder |
| 2 | Zinc, Zn | 3.5 - 4.5 |
| 3 | Magnesium, Mg | 2.3 - 3.3 |
| 4 | Silicon, Si | 0.3 max |
| 5 | Iron, Fe | 0.4 max |
| 6 | Chromium, Cr | 0.15 - 0.25 |
| 7 | Manganese, Mn | 0.1 - 0.4 |
| 8 | Copper, Cu | 0.1 max |
| 9 | Titanium, Ti | 0.1 max |
| 10 | Remainder (total) | 0.15 max |
Physical Properties
| No | Properties [1] | Metric |
|---|---|---|
| 1 | Density | 2.74 g/cm³ |
| 2 | Melting point | 482-638°C |
Mechanical Properties
| No | Properties[1] | Metric |
|---|---|---|
| 1 | Tensile strength | 450 MPa |
| 2 | Yield strength | 380 MPa |
| 3 | Elongation at break | 13% |
| 4 | Elastic modulus | 69.6 GPa |
| 5 | Shear strength | 255 MPa |
Applications
Aluminium / aluminum 7039 alloy is chiefly used as an armor alloy. It is used for making armor suite.[2]
References
Further reading
- "Properties of Wrought Aluminum and Aluminum Alloys: 7039", Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, Vol 2, ASM Handbook, ASM International, 1990, p. 109-111.
- Mechanical and ballistic properties of powder metal 7039 aluminium alloy joined by friction stir welding
- Anderson, Kevin; Weritz, John; Kaufman, J. Gilbert, eds. (2019). "7039: Armor Plate". Properties and Selection of Aluminum Alloys. 2B: 418–419. doi:10.31399/asm.hb.v02b.a0006730.
Aluminum alloy table
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