7039 aluminium alloy explained
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 | 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 | Metric |
|---|
| 1 | Density | 2.74 g/cm3 |
| 2 | Melting point | 482-638°C | |
Mechanical Properties
| No | Properties | 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 | |
For more properties, visit
- Aluminum 7039-T61 Properties
- Aluminum 7039-T64 Properties
Applications
Aluminium 7039 alloy is chiefly used as an armor alloy. It is used for making armor suite.[2]
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 . 7039: Armor Plate . Properties and Selection of Aluminum Alloys . 2019 . 2B . 418–419 . 10.31399/asm.hb.v02b.a0006730.
Notes and References
- Web site: 8 May 2013. Aluminum alloy, 7039. live. https://web.archive.org/web/20130525021833/http://www.azom.com/article.aspx?ArticleId=8764 . 2013-05-25 .
- Web site: Armour applications. live. https://web.archive.org/web/20200919122925/https://www.constellium.com/product-finder/alluminium/defense-defense-7039-alluminium . 2020-09-19 .
