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Aluminium Alloy 3003 And 6016 Properties

Today, as the automotive industry pursues lightweight and environmental protection, aluminum alloy materials have become the core choice of body structure due to their high specific strength, easy processing and corrosion resistance.

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1. 3003 aluminum alloy

3003 alloy belongs to aluminum-manganese alloy (Al-Mn), which is the representative material of traditional body panels. The manganese content in its composition is about 1%, and a small amount of iron and silicon are added to optimize processing performance.

Aluminium alloy 3003 properties

Strength: tensile strength is about 110-130 MPa, yield strength is about 65-85 MPa, and elongation can reach more than 20%. Although 3003 aluminum alloy is not a high-strength alloy, it is enough to meet the needs of non-structural parts such as car doors and hoods.

Formability: excellent ductility and low work hardening rate, suitable for complex curved surface stamping, such as body panels.

Weldability: stable mechanical properties after welding, suitable for body welding process.

Chemical properties

Corrosion resistance: Aluminum-manganese alloy naturally forms a dense oxide film and performs well in a neutral environment, but attention should be paid to local corrosion protection in the welding area.

Typical applications

Body panels (doors, hoods, trunk lids)
Radiators, fuel tanks and other parts

2. 6061 aluminum alloy

6016 aluminum sheet belongs to the aluminum-magnesium-silicon system (Al-Mg-Si). It achieves high strength through solid solution strengthening and aging treatment and is an ideal material for body structural parts. Its composition is about 0.5% magnesium, about 0.6% silicon, and trace elements such as copper and iron are added.

6016 t6 aluminum mechanical properties

Strength: The tensile strength of 6016 t6 aluminum can reach 240-280 MPa, the yield strength is about 180-220 MPa, and the elongation is about 15%. The comprehensive performance is close to that of low-carbon steel.

Rigidity and toughness: The higher elastic modulus (about 70 GPa) and impact toughness are suitable for parts that bear dynamic loads.

Heat treatment response: The strength can be further improved through T4/T6 treatment to meet collision safety requirements.

Chemical properties

Corrosion resistance: The combination of magnesium and silicon makes it slightly less stable than 3003 in a humid environment, and it needs to rely on surface coating or anodizing.

Typical applications