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]