The 3003 H14 aluminum sheet is a widely used, non-heat-treatable alloy valued for its excellent corrosion resistance, good formability, and moderate strength. It is commonly applied in roofing, siding, insulation systems, cookware, and decorative projects.
If you are seeking a cost-effective and dependable material, 3003 H14 aluminum sheet is an excellent option.
Product Specifications
Below are the standard specifications for GNEE aluminum sheet products:
| Item | Description |
|---|---|
| Product | 3003 H14 Aluminum Sheet |
| Standards | ASTM B209 / C1729 |
| Available Alloys | 3003, 3105, 5005, 6061, 6082 |
| Temper | H14, H16, H24 (special tempers available) |
| Thickness | 0.3 mm – 1.5 mm |
| Width | 914 mm, 1000 mm, 1219 mm |
| Length | 100' (30 m), 200' (60 m), Jumbo Roll |
| Finish | Mill finish/customized surface on request |
Custom sizes and surface treatments are also available upon request.

What Does 3003 H14 Mean?
3003 H14 aluminum is a manganese-containing alloy that delivers excellent corrosion resistance along with reliable mechanical properties.
3003 refers to the alloy designation, containing approximately 1.2% manganese.
H14 indicates a strain-hardened temper at roughly half-hard condition.
This temper provides an ideal balance between strength and workability, making it suitable for bending, spinning, and forming processes.
Difference Between 3003 H14 and 6061 T6
| Feature | 3003 H14 | 6061 T6 |
|---|---|---|
| Alloy Type | Non-heat treatable | Heat treatable |
| Strength | Moderate | High |
| Corrosion Resistance | Excellent | Very good |
| Workability | Excellent | Good |
| Weldability | Good | Excellent |
While 6061 T6 offers higher strength and is better suited for structural uses, 3003 H14 is more economical and easier to form, making it ideal for sheet metal fabrication.
Difference Between 3003 H14 and 5052 Aluminum
| Feature | 3003 H14 | 5052 H32 |
|---|---|---|
| Main Alloying Element | Manganese | Magnesium |
| Strength | Moderate | Higher |
| Corrosion Resistance | Excellent | Excellent |
| Workability | Very good | Good |
| Marine Applications | Not recommended | Suitable |
5052 aluminum is stronger and preferred for marine environments, while 3003 aluminum excels in formability and is widely used for architectural and decorative purposes.
Applications of 3003 H14 Aluminum Sheet
Thanks to its corrosion resistance and ease of forming, 3003 H14 aluminum sheet is used across many industries, including:
Roofing and siding panels
Refrigeration panels
Cookware and kitchen utensils
Automotive insulation and cladding
Architectural decorative panels
Packaging and insulation foils
Lighting reflectors
Nameplates and signage
Types of 3003 H14 Aluminum Sheet
GNEE supplies multiple surface finishes and forms to meet different application needs:
Mill finish aluminum sheet
Brushed aluminum sheet
Painted aluminum sheet
Anodized surface (on request)
Stucco embossed aluminum sheet
Surface treatments and packaging can be customized according to customer requirements.
Comparison With Other Aluminum Alloys
| Property | 3003 H14 | 5052 H32 | 6061 T6 |
|---|---|---|---|
| Strength (MPa) | 145 | 230 | 275 |
| Corrosion Resistance | Good | Excellent | Good |
| Formability | Excellent | Good | Poor |
| Typical Uses | Gutters, signs | Marine, trucks | Structural parts |
Chemical Composition of 3003 Aluminum Alloy
| Element | Percentage (%) |
|---|---|
| Aluminum (Al) | 96.6 – 99.0 |
| Manganese (Mn) | 1.0 – 1.5 |
| Copper (Cu) | 0.05 – 0.20 |
| Iron (Fe) | ≤ 0.70 |
| Silicon (Si) | ≤ 0.60 |
| Zinc (Zn) | ≤ 0.10 |
This composition provides excellent corrosion resistance, particularly in humid or mildly acidic environments.
Packaging and Delivery
To ensure safe transportation, GNEE 3003 H14 aluminum sheets are packed with:
Waterproof paper and wooden pallets
Steel strapping for added security
Optional protective plastic film
Customized logos and export markings
Both LCL and FCL shipments are supported, with fast delivery from stock.
Why Choose GNEE as Your 3003 H14 Aluminum Sheet Supplier?
At GNEE, we focus on providing reliable products and consistent service:
Short lead times
Strict quality inspection
Custom sizes and surface finishes
Professional export experience
We have successfully supplied aluminum products to customers in more than 40 countries, earning strong trust and long-term cooperation worldwide.






