7022 aluminium alloy
7022 aluminium alloy is an alloy in the wrought aluminium-zinc family (7000 or 7xxx series). It is one of the more complex grades in the 7000 series, with at least 87.85% aluminium by weight.
Like most other highly alloyed alloys, 7022 is a high strength alloy, with yield strength of 370 MPa. Designed to be resistant to stress corrosion cracking, it has decent corrosion and oxidation resistance comparable to 7075 aluminium alloy[1] but worse than 7039 aluminium alloy. Good machinability, thermal conductivity and dimensional stability make 7022 alloy a material of choice for plastic injection molds.[2]
7022 alloy can be heat treated to increase tensile strength in expense of workability, with most common grade been T651.
Notes: Alternative names for 7022 alloy are A7022 and AA7022.
Chemical Composition
- Aluminium: 88.35 to 92.4%
- Zinc: 4.3 to 5.2%
- Magnesium: 2.6 to 3.7%
- Copper: 0.5 to 1.0%
- Manganese: 0.1 to 0.4%
- Chromium: 0.1 to 0.3%
- Silicon: 0.5% max
- Iron: 0.5% max[3]
- Titanium: 0.2% max
- Zirconium: 0.2% max
- Other: 0.15% max
See also
- Aleris (first maker of A7022)
References
Aluminum alloy table
- v
- t
- e
- 4006
- 4007
- 4015
- 4032
- 4043
- 4047
- 4543
- Aluminium–lithium alloys
- AlBeMet
- Alclad
- Alnico
- AlSiC
- Alumel
- Aluminium granules
- Alusil
- Birmabright
- Devarda's alloy
- Duralumin
- Hiduminium (aka R.R. alloys)
- Hydronalium
- Italma
- Lo-Ex
- Magnalium
- Magnox (alloy)
- MKM steel
- Nickel aluminide
- Aluminium–scandium alloys
- Y alloy
- Al-Ca composite
- Hypereutectic piston
- Aluminium bronze
- AlSi10Mg