3004 aluminium alloy is an alloy in the wrought aluminium-manganese alloys family (3000 or 3xxx series). It is similar to the 3003 alloy, except for the addition of approximately 1% magnesium. It can be cold worked (but not, unlike some other types of aluminium alloys, heat treated) to produce tempers with a higher strength but a lower ductility. Like most other aluminium-manganese alloys, 3003 is a general-purpose alloy with moderate strength, good workability, and good corrosion resistance. It is commonly rolled and extruded, but typically not forged. As a wrought alloy, it is not used in casting.[1]
The alloy 3004 is commonly used in the making of beverage cans. It was developed to satisfy the need for thinner gauges in can-stock, and thereby to some extent replaced its predecessor 3003 alloy in the making of beverage cans. Can-stock can be made thinner due to the addition of 1% magnesium, which contributes in solid solution strengthening.[2]
Alternate designations include 3.0526 and A93004. 3004 aluminium and its various tempers are discussed in the following standards:[3]
| 95.6 to 98.2% | 0.8 to 1.3% | 0.3% max | 0.7% max | 0.25% max | 0.25% max | 1.0 to 1.5% | 0.15% max |