3003 Aluminum Coil

3003 aluminum coil is a commonly used aluminum alloy material that contains manganese. Compared with 1100 pure aluminum coil, it has higher strength and better corrosion resistance. This alloy has excellent processing performance, is easy to form and weld, and is suitable for applications that require certain strength and formability. 3003 aluminum coil is widely used in the production of tanks, building exterior panels, truck bodies, pipes, and household appliances. Its good cost-effectiveness makes it the preferred material for the manufacture of many industrial and daily necessities.

I. Core Characteristics

Material Composition

Containing ≥99.6% aluminum, with manganese as the primary alloying element (1.0%-1.5%), it belongs to the aluminum-manganese alloy family.

With a density of 2.73 g/cm³, its strength is 20% higher than pure aluminum, while maintaining good ductility.

Physical Properties

It has superior electrical conductivity to most aluminum alloys and a high thermal conductivity, making it suitable for heat dissipation applications.

The dense surface oxide film provides resistance to atmospheric corrosion and humid environments, making it particularly suitable for outdoor use.

Mechanical Properties

Tensile strength of 110-200 MPa (varies with tempering state), elongation of 6%-30%.

It cannot be heat-treated to strengthen; cold working is required to increase its strength.

II. Production Process

Smelting and Casting

High-purity aluminum ingots and manganese are melted in appropriate proportions and continuously cast and rolled to form aluminum coil blanks. Hot-rolled and cold-rolled for controlled thickness (0.01-300mm), followed by annealing after cold rolling to adjust the hardness and softness.

Surface Treatment

Anodizing, color coating (such as fluorocarbon spraying), or embossing are available to enhance weather resistance or decorative effects.

III. Main Applications

Architectural Decoration

Curtain walls and ceilings (0.8-1.5mm thickness), color-coated for up to 20 years of weather resistance.

Industrial Manufacturing

Power battery casings and pipe insulation (3003H14/H24).

Food tanks and chemical containers (highly corrosion-resistant).

Transportation

Automotive body parts and fuel tanks (for lightweighting).

IV. Purchasing Guide

Specifications

Thickness should be selected to suit the intended use (e.g., 0.1-0.3mm for packaging, 0.5-2.0mm for construction).

Condition Identification

H14/H24 indicates the degree of cold work hardening, while condition O represents a completely soft state (suitable for deep drawing).

Surface Quality

Mirror, matte, or color-coated finishes are selected based on the application.

3003 aluminum coil, with its balanced strength, corrosion resistance, and workability, has become a versatile material in the industrial field.

I. Thickness Specifications

Conventional Thickness Range

Thin Plate: 0.1-0.3mm (commonly used for lightweight requirements such as packaging and battery shells)

Medium Plate: 0.5-2.5mm (mainstream applications such as building curtain walls and automobile fenders) . Extra-thick plate: 3.0-6.0mm (industrial containers, large structural components)

Special thickness requirements

Ultra-thin foil: 0.006-0.1mm (aluminum foil for food packaging)

Custom thick plate: up to 500mm (hot-rolled, for specialized industrial applications)

II. Width Specifications

Standard Width

Narrow Width: 100-600mm (battery casings, small stamping parts)

Regular Width: 800-1600mm (architectural decoration, general industry)

Extra-wide Width: 2000-2650mm (large curtain walls, silos)

Custom Slitting

Supports on-demand slitting, with a width adjustment accuracy of ±1mm

III. Length Specifications

Coil Length

Standard coil length: 500-8000mm (subject to thickness and weight restrictions)

Extra-long custom coils: Some manufacturers can provide continuous coils exceeding 16000mm.

Plate length

Common lengths: 1000×2000mm, 1220×2440mm (building boards).

IV. State identification and performance

Common state

O state : Fully soft annealed, elongation ≥20% (deep drawing processing).

H14/H24 : Semi-hard state, tensile strength 140-180MPa (balancing strength and formability) .

H18 : Fully hard state, highest strength but low plasticity (for high rigidity scenarios).

Special state

H32/H34: Stabilized, suitable for precision processing.

V. Surface treatment options

Base surface

Mirror/matte: Suitable for electronic devices and decorative panels.

Embossed texture: Enhanced anti-slip properties (such as diamond pattern, orange peel pattern).

Color coating process

Fluorocarbon spraying: Weather resistance of more than 20 years (building curtain wall). Polyester coating: Economical color coating (for interior decoration).

3003 aluminum coils offer a comprehensive range of specifications, allowing users to select thickness, width, and surface treatment combinations based on their specific needs.