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

For more properties, visit
  1. Aluminum 7039-T61 Properties
  2. Aluminum 7039-T64 Properties

Applications

Aluminium 7039 alloy is chiefly used as an armor alloy. It is used for making armor suite.[2]

References
  1. "Aluminum alloy, 7039". 8 May 2013. Archived from the original on 2013-05-25.
  2. "Armour applications". Archived from the original on 2020-09-19.

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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