3003 Aluminum Guide (Properties and Applications)

Corrosion resistance indicates that a material can resist corrosion or the tendency to deteriorate when exposed to chemicals or environmental attacks. Superior corrosion resistance is the defining quality of 3003 aluminum, as it has excellent longevity when exposed to water, air and other media.

This attribute of 3003 aluminum comes from the natural development of a thin oxide film on its surface. This oxide layer helps protect the metal from corrosion and reactions between oxygen and the metal during everyday use.

Machinability refers to the ease with which a metal can be machined. The more machinable a material is, the easier it is to cut, drill or shape it into the desired form. 3003 aluminum is an excellent example of a highly machinable metal.

In its pure form, aluminum offers low strength, which means it cannot withstand much stress or pressure. 3003 aluminum is stronger, though its exact strength depends on several factors, including chemical composition and temperature. Manganese can be added to the metal to increase its ultimate tensile strength to around 29,000 psi — which is often 20% stronger than pure aluminum. If desired, you can also harden the material by cold working, which manipulates it below its recrystallization temperature.

Thermal conductivity in metals refers to the heat transfer rate through a material. The thermal conductivity of 3003 aluminum stays at approximately 193 W/m-K, making it an excellent conductor of heat and capable of quickly dissipating it. However, this metal alloy is not heat-treatable.

Weldability is the ability of a metal to be welded without burning, melting, or producing excessive heat. For parts requiring a medium hardness and good weldability, 3003 aluminum is an excellent choice. You can weld 3003 using standard techniques like gas tungsten arc welding (GTAW), gas metal arc welding (GMAW) or shielded metal arc welding (SMAW).

3003 aluminum has a high degree of workability, meaning you can easily shape, form or otherwise work the material without breakdown. This alloy’s excellent formability helps it maintain structural integrity, and it has an appropriate balance between yield strength and tensile strength. Manufacturers can form it using conventional hot or cold working methods.