3003 aluminum coil is an aluminum-manganese alloy, belonging to the 3000 series (or 3xxx series). This alloy cannot be strengthened by heat treatment but can be improved through cold working. Like other aluminum-manganese alloys, 3003 aluminum coil has moderate strength, good machinability, and excellent corrosion resistance.
Common processing methods for 3003 aluminum coil include rolling and extrusion, but it is not suitable for casting. It is widely used in applications requiring good formability and weldability, such as gutters, downspouts, roofing, and wall panels.
3003 aluminum alloy is a widely used aluminum-manganese alloy that offers higher strength and better corrosion resistance compared to the 1100 alloy. It is suitable for various applications requiring excellent formability and weldability.
3003 aluminum coil is based on pure aluminum with the addition of 1.0–1.5% manganese, which significantly improves the material's strength and corrosion resistance while maintaining lightweight characteristics (density approximately 2.73 g/cm³).
Non-heat treatable: Strength is increased through cold working (strain hardening) rather than heat treatment.
Main standards: ASTM B209, ISO 6361, and EN-AW 3003.
3003 aluminum coil is a widely used material, highly regarded for its adaptability across industries. Its combination of moderate strength, corrosion resistance, and ease of manufacturing makes it an indispensable material in applications ranging from construction to energy storage.
3003 Aluminum Coil Specifications
| Parameter | Specification Range |
| Thickness | 0.2 – 8 mm |
| Width | 100–2650 mm |
| Temper Options | O, H12, H14, H16, H18, H19, H22, H24, etc. |
| Surface Treatment | Mill finish, brushed, anodized, coated (PVDF/PE) |
| Protective Coating | Film or kraft paper to prevent scratches and moisture |
| Anodizing |
Enhances corrosion resistance and supports color customization |
Typical Aluminum Coil 3003 Temper
3003 aluminum coil is available in a variety of tempers, including:
O: Annealed, the softest temper state.
H14: Strain-hardened to a half-hard temper.
H16: Strain-hardened to three-quarter hard temper.
H18: Strain-hardened to full-hard temper.
Typical sizes include thicknesses from 0.2 mm to 3.0 mm and widths from 600 mm to 2000 mm.
3003 H14 Aluminum Coil Partially hard, cold-rolled aluminum coil with good corrosion resistance and moderate strength; suitable for roofing, siding, gutters, and ductwork applications; easy to fabricate and form.
3003 H24 Aluminum Coil Strain-hardened aluminum coil offering a balance between strength and formability; excellent corrosion resistance for outdoor applications; commonly used in architectural panels, awnings, and HVAC ducts.
3003 O Aluminum Coil Fully annealed, soft aluminum coil with maximum formability; ideal for deep drawing, bending, and complex shapes; widely applied in kitchen utensils, beverage containers, and decorative panels.
3003 H18 Aluminum Coil Fully strain-hardened aluminum coil providing higher strength than H14 while maintaining good corrosion resistance; suitable for roofing sheets, siding, and exterior architectural components.
3003 H12 Aluminum Coil Quarter-hard aluminum coil with good combination of strength and ductility; resistant to corrosion; commonly used in roofing, cladding, and general sheet metal fabrication.
3003 H16 Aluminum Coil Three-quarter hard aluminum coil offering enhanced strength while retaining good corrosion resistance; typically used in siding, panels, and general outdoor architectural applications.
3003 H19 Aluminum Coil Fully hard aluminum coil providing maximum strength in the 3003 alloy series; corrosion resistant but less formable; used in structural panels, roofing, and applications requiring higher rigidity.
3003 Aluminum Coil Properties
Corrosion Resistance: Excellent, especially resistant to atmospheric and chemical corrosion, suitable for outdoor and marine applications.
Strength: Due to the addition of manganese, the strength of 3003 is approximately 20% higher than that of the 1100 series aluminum.
Formability: High ductility, easy to form and shape. Very suitable for bending, stamping, and roll forming.
Rust Resistance: 3003 has outstanding rust resistance, ideal for applications requiring durability.
Weldability: Good weldability using conventional methods.
Not Heat Treatable: Strengthened through cold working rather than heat treatment.
Workability: High plasticity, easy to stamp, bend and form; good elongation in the annealed condition.
Other Characteristics: Moderate thermal conductivity, lightweight (low density), recyclable and environmentally friendly.
Lightweight: Density of 2.73 g/cm³, can improve fuel efficiency in automotive applications.
Limitations: Poor machinability in hardened tempers, limited heat treatability.
Cold Working: Mechanical properties can be improved through cold working, but not through heat treatment.
3003 Aluminum Coil Advantages
Good weldability
Good corrosion resistance
Good formability
Medium strength
Good rust resistance
Good plasticity
3003 Aluminum Coil Standards
ASTM-B209
EN-AW 3003/AlMN1Cu
UNS A93003
QQA 250/2
