3003 aluminum circle (aluminum disc/blank) is a precision-cut circular blank made from 3003 Al-Mn alloy sheet. Known for exceptional formability and corrosion resistance, it's the industry standard for deep drawing, spinning, and stamping applications in cookware and lighting manufacturing.
5 Key Benefits of 3003 Aluminum Circles
1. Superior Formability
- 30% elongation in O-temper for deep drawing
- Reduces scrap rates by 15-30%
2. Corrosion Resistance
- Marine-grade durability
- Natural oxide layer protection
3. Excellent Surface Quality
- Mill finish Ra ≤ 0.8μm
- Ready for anodizing or powder coating
4. Optimal Thermal Properties
- Thermal conductivity: 160-190 W/(m·K)
- 40% better heat transfer than stainless steel
5. Cost-Effective
- 20-35% lower cost than 5052/6061 alloys
- Reduces tooling wear
Technical Specifications
Mechanical Properties (Aluminum Association Standards)
| Temper | Tensile Strength | Elongation | Applications |
| O | 110-130 MPa | 25-30% | Deep drawing |
| H14 | 150-180 MPa | 5-12% | Stamping |
| H24 | 160-200 MPa | 4-10% | Flat components |
Chemical Composition
- Manganese: 1.0-1.5%
- Copper: 0.05-0.20%
- Iron: ≤0.7%
- Aluminum: Balance (96.8-99%)
Physical Properties
- Density: 2.73 g/cm³
- Melting Point: 643-654°C
- Electrical Conductivity: 41% IACS
Available Sizes & Options
Diameter Range
- Small: 20-300mm (cookware, small lamps)
- Medium: 300-600mm (frying pans, reflectors)
- Large: 600-1500mm (industrial components)
Surface Treatments
Mill finish
- Natural, Ra ≤0.8μm.
- Industrial parts, pre-finishing.
Polished
- Mirror or brushed.
- Lighting reflectors, cookware.
Anodized
- Clear/colored, 8-25μm.
- Cookware, decorative panels.
Powder/PVDF coated
- Various colors, durable.
- Architectural,outdoor applications.
Edge Finish
- Slit edge (standard, cost-effective)
- Trimmed edge (precision applications, tighter tolerances ±0.2mm)
Manufacturing Process Options
DC (Direct Casting): Superior surface quality for cookware
CC (Continuous Casting): Cost-effective for industrial use
Main Applications
Cookware
- Non-stick pans
- Pressure cooker bases
- Pot lids
Lighting
- LED reflectors (85-90% reflectivity)
- Lamp shades
- Street light housings
Industrial & Signage
- Traffic signs
- Heat sinks
- Electronic enclosures
3003 vs Other Aluminum Alloys
| Property | 3003 | 1100 | 5052 | 6061 |
| Formability | Excellent | Excellent | Good | Fair |
| Strength | Good | Fair | Very Good | Excellent |
| Cost | $ | $ | $$ | $$$ |
| Best Use | Deep drawing | Decorative | Marine | Structural |
Quality Standards & Certifications
- ISO 9001:2015
- ASTM B209 compliant
- FDA food-safe (when coated)
- RoHS/REACH compliant
FAQs
Q: What's the difference between O and
H14 tempers?
A: O-temper is fully annealed (softest, best for deep drawing), H14 is
half-hard (stronger, for shallow forming).
Q: Can 3003 aluminum circles be welded?
A: Yes, excellent weldability with TIG/MIG methods per AWS standards.
Q: Is 3003 aluminum food-safe?
A: Yes, meets FDA requirements when properly anodized or coated.
Q: What's the typical MOQ?
A: 1-3 tons for custom sizes; lower for stock items.
Why Choose Worthwill 3003 Aluminum Circles?
Worthwill 3003 aluminum circles offer the optimal balance of formability, corrosion resistance, and cost-effectiveness. With consistent quality meeting international standards, they remain the preferred choice for cookware manufacturers and lighting producers worldwide.
Key Advantages Summary:
- Precision tolerances: ±0.5mm diameter
- Quality certified: ISO 9001, ASTM compliant
- Flexible options: Multiple sizes and finishes
- Fast delivery: 7-25 days depending on specifications
