3003 3004 3105 2mm 8mm aluminum sheet

01/14 2026

The 3003, 3004, and 3105 aluminum sheet series are well-known non-heat-treatable alloys built on the Al-Mn (aluminum–manganese) system. In thicknesses like 2 mm and 8 mm, these sheets offer an excellent balance of strength, corrosion resistance, workability, and cost, making them ideal for construction, packaging, household products, and industrial components.

Item	3003 Aluminum Sheet	3004 Aluminum Sheet	3105 Aluminum Sheet
Alloy Type	Al–Mn (non-heat-treatable)	Al–Mn–Mg (non-heat-treatable)	Al–Mn–Mg (non-heat-treatable)
Strength Level	Low to medium	Medium (higher than 3003)	Medium (similar or slightly above 3003)
Main Features	Good formability, good corrosion resistance	Higher strength, good deep-drawing	Excellent corrosion resistance, good weldability
Typical Tempers	O, H14, H16, H24, H26	H14, H16, H24, H26	H14, H16, H24, H26
Common Thicknesses	0.2–10 mm	0.2–8 mm	0.2–8 mm
Highlight Thicknesses	2 mm sheet, medium gauge	2 mm sheet for formed parts	2 mm & 8 mm for structural panels

Chemical Composition

Values below are typical ranges according to common standards (e.g., ASTM/EN). Exact composition may slightly vary by melt and supplier.

Chemical Composition (%) – 3003

Element	Content (%)
Al	Balance
Mn	1.0 – 1.5
Cu	0.05 – 0.20
Si	≤ 0.60
Fe	≤ 0.70
Zn	≤ 0.10
Mg	–
Others	≤ 0.15 total

Chemical Composition (%) – 3004

Element	Content (%)
Al	Balance
Mn	1.0 – 1.5
Mg	0.8 – 1.3
Cu	≤ 0.25
Si	≤ 0.30
Fe	≤ 0.70
Zn	≤ 0.25
Others	≤ 0.15 total

Chemical Composition (%) – 3105

Element	Content (%)
Al	Balance
Mn	0.3 – 0.8
Mg	0.20 – 0.80
Cu	0.20 – 0.40
Si	≤ 0.60
Fe	≤ 0.70
Zn	0.25 – 0.80
Others	≤ 0.15 total

Mechanical & Physical Properties

The following data are typical values for commonly used H14 / H24 tempers, for reference only.

Mechanical Properties (Representative Values)

Alloy	Temper	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)	Typical Use Level
3003	H14	130 – 180	60 – 140	5 – 12	General forming, panels
3004	H14	180 – 250	120 – 200	4 – 10	Higher-strength parts
3105	H24	150 – 230	100 – 190	5 – 12	Painted sheets, facades

Physical Properties (All Series – Approximate)

Property	Typical Value
Density	~2.73 g/cm³
Melting Range	630 – 655 °C
Thermal Conductivity	150 – 190 W/m·K
Electrical Conductivity	~45–50 % IACS
Coefficient of Expansion	~23–24 × 10⁻⁶ /K

Thickness Focus: 2 mm & 8 mm Aluminum Sheet

The same alloys behave differently at 2 mm and 8 mm thicknesses, which leads to different best-fit applications.

Comparison by Thickness

Parameter	2 mm Sheet	8 mm Sheet
Rigidity	Medium rigidity, easy to bend	High rigidity, semi-structural
Forming Behavior	Excellent bendability and stamping	Limited deep bending, mainly shaping cuts
Weight (per m², approx.)	~5.5 kg/m²	~22 kg/m²
Recommended Use	Enclosures, panels, decorative parts	Base plates, support parts, heavy panels
Handling	Easier manual handling	Requires more robust handling equipment

Features of 3003, 3004, 3105 Aluminum Sheet

Feature	3003	3004	3105
Corrosion Resistance	Very good	Very good	Excellent, especially for outdoor use
Formability	Excellent for deep drawing	Good to excellent, stronger material	Good, suitable for roll forming and bending
Weldability	Good with TIG/MIG, spot welding	Good	Very good, widely used for welded products
Surface Treatment	Suitable for anodizing/painting	Good for painting, internal coatings	Excellent for color-coated and PVDF paints
Strength vs. Cost	Economical, moderate strength	Higher strength, slightly higher cost	Balanced strength and cost for building use

Surface Finishes and Processing Options

These alloys support a wide combination of surface states and processing steps, making them adaptable for different industries.

Typical Surface & Delivery Conditions

Option	Description	Typical Use
Mill finish	As-rolled surface, light rolling marks	General fabrication, hidden components
Brushed / polished	Mechanically finished for decorative appearance	Interior panels, appliance fronts
Embossed (stucco, diamond)	Patterned surface to improve stiffness & aesthetics	Roofing, insulation jacketing, anti-slip
Painted / color-coated	Coil-coated with polyester or PVDF systems	Building facades, roofing, signage
Anodized	Thin oxide layer with improved corrosion & appearance	Decorative items, architectural trim

Processability

Process	Suitability (3003/3004/3105)	Notes
Bending & folding	Very good	2 mm thickness ideal; 8 mm requires larger bend radius
Deep drawing	Excellent for 3003, good for 3004	Common in cookware, containers, lamp housings
Welding (TIG/MIG)	Good–very good	Proper filler selection improves joint strength and color
Riveting / mechanical joining	Very good	Lighter than steel fastened structures
Cutting (shear, laser, saw)	Very good	Smooth edges at 2 mm, controlled heat for thicker gauges

Major Applications

Construction & Architecture

Application Area	Recommended Alloy / Thickness	Advantages
Wall cladding & facade panels	3105, 3003 – 2 mm, 3 mm	Good flatness, paint adhesion, weather resistance
Roofing & gutter systems	3003, 3105 – 0.7–2 mm	Corrosion resistance, low weight, easy installation
Ceiling and interior decorative panels	3003 – 1–2 mm	Easy forming, good surface treatments
Door skins, window trims	3003, 3105 – 1–2 mm	Smooth appearance, stable under temperature changes
Base plates / mounting plates	3004, 3105 – 6–8 mm	Higher stiffness and load-bearing capability

Packaging, Cans, and Containers

Product Type	Typical Alloy & Gauge	Why These Alloys?
Beverage and food can bodies	3004 – thin gauge	Good strength-to-thickness ratio, deep-drawable
Food containers & trays	3003, 3004 – thin to 2 mm	Hygienic, corrosion resistant, easy forming
Bottle caps & closures	3105, 3004 – 0.2–0.3 mm	Formable and printable

Household & Consumer Products

Item	Typical Alloy / Thickness	Benefits
Cookware, pots, pans	3003 – 1.5–3 mm	Good thermal conductivity, easy shaping
Kitchen appliances panels	3003, 3105 – 0.8–2 mm	Attractive finish, paintable, corrosion resistant
Lampshades, lighting housings	3003 – 0.6–1.5 mm	Good reflectivity when polished or anodized
Furniture components, trim	3105 – 1–2 mm	Durable with high-quality painted finish

Industrial and Transportation

Application	Alloy / Thickness (2 mm & 8 mm)	Role of Alloy
Equipment covers & enclosures	3003, 3105 – 1.5–3 mm	Protects internal components, easy fabrication
Trailer and vehicle inner panels	3003, 3105 – 1–2 mm	Reduces weight while maintaining rigidity
Brackets, non-critical structures	3004, 3105 – up to 8 mm	Added strength with simple machining
HVAC casings and duct panels	3003 – 0.8–2 mm	Lightweight, corrosion-resistant in moist air

Why Choose 3003 / 3004 / 3105 in 2–8 mm Range?

Advantage Category	Explanation
Cost Efficiency	More economical than many 5xxx or 6xxx series for non-critical loads
Versatility	Suitable for bending, drawing, coating, and welding in one material family
Corrosion Resistance	Ideal for outdoor, humid, and mildly corrosive environments
Lightweight	Approximately one-third the weight of steel at comparable volume
Appearance	Smooth surface with good gloss and color uniformity after coating

Quick Selection Guide

Requirement Scenario	Recommended Choice
Need best formability for deep drawing	3003 at 2 mm or thinner
Need higher strength in same thickness	3004 at 2 mm; consider temper H14/H24
Need painted exterior building panels	3105 at 2–3 mm with coil coating
Need heavy-duty base plate or support	3105 or 3004 at 6–8 mm
Need cost-effective, general-purpose sheet	3003 for most indoor and light outdoor uses

In 2 mm and 8 mm thicknesses, 3003, 3004, and 3105 aluminum sheet provide a balanced solution for strength, corrosion resistance, and processability. Whether the application is a facade panel, equipment enclosure, cookware body, or structural base plate, this alloy family offers an efficient and reliable material option that fabricators can cut, bend, coat, and weld with confidence.

3003 3004 3105

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