Aluminum Alloys Characteristics
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Some common aluminium alloys, their characteristics and common uses.
| Alloy | Characteristics | Common Uses | Form |
| 1050/1200 | Good formability, weldability and corrosion resistance | Food and chemical industry. | S,P |
| 2014A |
Heat treatable.
High strength. Non-weldable. Poor corrosion reistance. |
Airframes. | E,P |
| 3103/3003 |
Non-heat treatable.
Medium strength work hardening alloy. Good weldability, formability and corrosion resistance. |
Vehicle panelling, structures exposed to marine atmospsheres, mine cages. | S,P,E |
| 5251/5052 |
Non-heat treatable.
Medium strength work hardening alloy. Good weldability, formability and corrosion resistance. |
Vehicle panelling, structures exposed to marine atmospsheres, mine cages. | S,P |
| 5454* |
Non-heat treatable.
Used at temperatures from 65-200°C. Good weldability and corrosion resistance. |
Pressure vessels and road tankers. Transport of ammonium nitrate, petroleum.
Chemical plants. |
S,P |
| 5083*/5182 |
Non-heat treatable.
Good weldability and corrosion resistance. Very resistant to sea water, industrial atmospheres. A superior alloy for cryogenic use (in annealed condition) |
Pressure vessels and road transport applications below 65°C.
Ship building structure in general. |
S,P,E |
| 6063* |
Heat treatable.
Medium strength alloy. Good weldability and corrosion resistance. Used for intricate profiles. |
Architectural extrusions (internal and external), window frames, irrigation pipes. | E |
| 6061*/6082* |
Heat treatable.
Medium strength alloy. Good weldability and corrosion resistance. |
Stressed structural members, bridges, cranes, roof trusses, beer barrels. | S,P,E |
| 6005A |
Heat treatable.
Properties very similar to 6082. Preferable as air quenchable, therefore has less distortion problems. Not notch sensitive. |
Thin walled wide extrusions. | E |
| 7020 |
Heat treatable.
Age hardens naturally therefore will recover properties in heat affected zone after welding. Susceptible to stress corrosion. Good ballistic deterrent properties. |
Armoured vehicles, military bridges, motor cycle and bicycle frames. | P,E |
| 7075 |
Heat treatable.
Very high strength. Non-weldable. Poor corrosion resistance. |
Airframes. | E,P |
Where: * = most commonly used alloys, S = sheet, P = plate and E = extrusions
