Alloy 3003 is widely used as a general-purpose alloy for moderate-strength applications requiring good workability. It has good finish, excellent formability, welds well, has moderate strength, and resists corrosion. Being the most versatile of all alloys, Alloy 3003 finds a wide range of uses, from N-95 masks to naval ships, aircraft and automobiles. Highly malleable with high plasticity, Alloy 3003 exhibits excellent rust-proof properties and is used in construction for roofing, siding and garage doors, as truck and trailer roofing in automobiles, and for pipe jacketing, gas lines and fuel tanks in the Oil and Gas industry. 

Alloy 3004 has good corrosion resistance, workability and possesses more strength than alloy 3003. The most common usage of alloy 3004 is in its rolled form. Because it has 1% additional magnesium, it has the upper hand in strength compared to alloy 3003. One can find Alloy 3004 most commonly used in beverage cans (replacing alloy 3003 owing to thinner cans being produced) as it provides strength with malleability at thinner dimensions. It is also used in cooking vessels, chemical equipment, hardware, cabinets, storage tanks and lamp bases. Alloy 3004 is good for cold working, which is the only means of producing harder tempers of this metal.