3003 aluminum is a non-heat-treatable, general-purpose alloy belonging to the 3xxx series. By alloying commercial purity aluminum with 1.0% to 1.5% manganese, it achieves a 20% increase in tensile strength over the 1100 series while maintaining exceptional ductility and atmospheric corrosion resistance. At GNEE, we supply this versatile metal annually, primarily for sheet metal fabrication, commercial HVAC components, deep-drawn cookware, and industrial roofing.
Below is the unedited, direct factory data you need to spec and source 3003 aluminum for your production lines.
Chemical Composition of 3003-O Aluminum Coil
| Element | Symbol | Required Percentage (%) | Factory Metallurgical Purpose |
| Aluminum | Al | ~96.8 - 99.0 | Base matrix material. |
| Manganese | Mn | 1.0 - 1.5 | Primary strengthener. Refines grain structure for superior deep drawing. |
| Iron | Fe | ≤ 0.7 | Impurity limit. Strictly controlled at the GNEE mill to prevent edge cracking. |
| Silicon | Si | ≤ 0.6 | Impurity limit. Monitored alongside iron. |
| Copper | Cu | 0.05 - 0.20 | Added in trace amounts for a minor tensile strength boost. |
| Zinc | Zn | ≤ 0.10 | Restricted to guarantee maximum resistance against moisture and rust. |
Mechanical Properties of Wholesale 3003-H14 Aluminum Sheet
| Temper | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Bending & Machining Reality |
| 3003 O (Soft/Annealed) | 110 | 40 | ~30% | Maximum ductility. Mandatory for severe deep drawing (e.g., seamless pots). |
| 3003 H14 (Half Hard) | 150 | 145 | 8% - 16% | The industry standard for sheet metal. Easily forms 90-degree bends. |
| 3003 H18 (Full Hard) | 200 | 185 | ~4% | Maximum rigidity. Used exclusively for flat panels. Will snap or crack if bent sharply. |
| 3003 H24 (Half Hard) | 150 | 145 | 8% - 16% | Strain-hardened and partially annealed. Identical strength to H14 but absorbs impact better. |
Are you unsure whether your tooling requires the O temper or H14 temper? Send your CAD drawings and bend radius limits to the GNEE engineering team. We will identify the exact temper required to eliminate material cracking on your shop floor.
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Bending Specs for Custom 3003-H24 Aluminum Plate
Bending Radius Rules:
For custom 3003-H24 aluminum tread plate (diamond plate) and standard H14 sheets, a safe 90-degree bend requires a minimum inner bend radius of 1t to 1.5t (where "t" is the material thickness).
Factory Forming Capabilities:
Press Braking: 3003-H14 handles straight enclosures and HVAC duct angles without outer grain fracturing.
Three-Roll Bending: Easily forms large-radius cylinders for pipe jacketing without wrinkling the inner radius.
Deep Drawing (O Temper Only): 3003-O has an isotropic grain structure, allowing it to be stretched deeply into cylindrical shapes like pressure cookers without bottom tearing.
Everyday Uses for Factory Price 3003-H18 Aluminum Roofing
- HVAC Systems: Evaporator coils, automotive radiators, and industrial pipe insulation jacketing. The alloy conducts heat exceptionally well (193 W/m-K) and resists continuous condensation.
- Commercial Cookware: Large baking pans, cooking pots, and food storage containers heavily utilize the 3003-O temper. The metal is non-toxic and forms a natural oxide layer that won't react with mildly acidic foods.
- Transportation & Trailers: Roofing panels, sidewalls, and internal protective kick plates. It reduces overall vehicle weight to save fuel while enduring highway road salt.
- Industrial Roofing: 3003-H18 aluminum roofing provides a stiff, corrugated profile that handles wind and snow loads while surviving harsh outdoor humidity without paint.
SMM Pricing from a 3003 Aluminum Plate Supplier
The GNEE Pricing Formula:
Current SMM (Shanghai Metals Market) Base Price + Factory Processing Fee + Ocean Freight.
GNEE bases all global B2B quotations on the actual SMM (Shanghai Metals Market) spot price.
The aluminum ingots melted and rolled at our facility are purchased domestically in RMB from Chinese smelters using the SMM daily rate. By pricing your bulk orders against the SMM index rather than the LME (London Metal Exchange), we remove arbitrary currency arbitrage markups, guaranteeing you the absolute floor factory price.
Moisture-Proof Export Packaging:
Ocean freight condensation causes "white rust," which destroys bare aluminum. GNEE utilizes strict marine-grade packaging:
- Sheets are interleaved with acid-free paper.
- Wrapped completely in heavy-duty waterproof kraft paper.
- Encapsulated in plastic shrink film loaded with industrial silica gel desiccants.
- Secured with steel bands onto custom ISPM-15 fumigated wooden pallets.
Send GNEE your exact thickness, width, temper, and monthly tonnage requirements. We will calculate a transparent, SMM-based quotation within 24 hours.
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