Aluminum circles are one of the most widely used semi-finished aluminum products. They serve as the starting material for a diverse range of end products, from the cookware in your kitchen to the traffic signs on highways and the lamp shades in buildings.
As a simple deep-processing aluminum product, aluminum circles are typically produced in O temper (soft annealed condition). This ensures optimal performance during subsequent deep drawing and spinning operations.
We supply aluminum circles in a comprehensive range of specifications, covering various alloys, diameters, and thicknesses to meet the needs of different manufacturing processes.
Discos de aluminio Círculo
Product Overview
Thickness Range: 0.3 mm to 4 mm (up to 6mm available upon request)
Diameter Range: 30 mm to 1800 mm
Production Methods
Aluminum circles can be produced using two main methods:
| Method | Description | Features |
|---|---|---|
| Circular Cutting | Uses a circle-cutting machine (compass cutter) | Suitable for very large sizes (≥1800mm); edges can be sharp and not perfectly round; may pose handling challenges |
| Dies Cutting | Uses a stamping press with a modular die | Produces round, smooth edges; no sharp burrs; better surface finish; suitable for automated production lines |
For industrial-scale production, fully automated blanking lines can achieve production speeds of 40-55 pieces per minute, with material utilization rates reaching 80% or more.
Aluminum Rivets
Common Alloys and Tempers
The choice of alloy depends on the final application and specific performance requirements.
| Aleación | Purity / Series | Key Characteristics | Typical Applications |
|---|---|---|---|
| 1050 | 99.5% pure aluminum | Good plasticity, corrosion resistance, and conductivity; well-balanced properties for general use | General cookware, kitchen utensils, lighting reflectors |
| 1060 | 99.6% pure aluminum | Highest purity among these grades; maximum elongation in O temper | High-value cookware, anodized products |
| 1100 | >99% pure aluminum | Higher strength and good formability; popular in Europe and America | Premium cookware, deep-drawn parts |
| 1200 | >99% pure aluminum | Good corrosion resistance and weldability; popular in Europe | Industrial applications, general-purpose blanks |
| 3003 | 3xxx series (Al-Mn) | Good strength and fracture resistance | Pressure cookers, chemical equipment, high-stress cookware |
| 5052 | 5xxx series (Al-Mg) | Good corrosion resistance and formability | Fuel tanks, marine components, high-end kitchenware |
All 1xxx series alloys (1050, 1060, 1100, 1200) are classified as pure aluminum with purity above 99% and are food-grade, making them suitable for cookware and kitchen utensils.
Círculo de aluminio 1050
CC vs. DC: Understanding the Difference
Aluminum circles are manufactured from either Continuous Casting (CC) or Direct Chill (DC) rolled coils. The choice between them has a significant impact on deep drawing performance.
| Property | CC (Continuous Casting) | DC (Direct Chill Casting) |
|---|---|---|
| Process | Aluminum ingot → Melting → Continuous Casting → Coil | Aluminum ingot → Melting → Square Billets → Direct Casting → Coil |
| Typical Use | Spinning operations | Deep drawing (pressing) |
| Deep Drawing Depth | Recommended up to 150mm | Recommended beyond 150mm (up to 300mm) |
| Material Cost | Lower | Higher |
Key Selection Guidance:
- For spinning cookware: CC material is recommended.
- For deep drawing (pressing) with depth exceeding 150mm: DC material is preferred to avoid cracking and ensure proper forming.
Both CC and DC materials in O temper (annealed soft state) have excellent deep drawing performance. 3003 alloy, in particular, provides better strength and fracture resistance for demanding cookware applications.
Círculo de aluminio 1060
Available Die Sizes
We maintain a wide range of standard die sizes for aluminum circles. The thickness range for die-cut circles is 0.4 mm to 4 mm, and our die inventory covers diameters from 30 mm to 1360 mm. Standard sizes are typically available in 5mm increments.
Key Applications
Aluminum circles serve a broad spectrum of industries:
- Cookware and Kitchenware – Non-stick pans, pressure cookers, pots, bakeware, pizza pans, and deep-drawn cookware
- Lighting – Lamp shades, reflectors for LED and industrial lighting
- Traffic and Road Safety – Road signs, traffic sign blanks, marker plates
- Industrial Components – Pressure vessel heads, tank ends, chemical equipment bottoms
- Building and Insulation – Building materials, thermal insulation components
- Other – Decorative items, crafts, kitchen utensils
Círculo de aluminio 3003
Common Product Inquiries
Q: What is the flatness tolerance?
Our aluminum circles are produced strictly according to international standards: GB/T 3880, EN 485, and ASTM B209. Flatness, thickness, and diameter tolerances meet these standard requirements.
Q: Are these suitable for deep drawing?
Yes, both 3003 and 1050 CC materials in O temper are suitable for deep drawing. 3003 is recommended for products requiring higher strength or pressure resistance.
Q: Do you have ISO and ROHS certification?
Yes. We hold ISO 9001:2015 certification. Our aluminum discs are ROHS compliant, and we can provide third-party test reports (SGS / TÜV / BV) upon request. We also accept third-party inspections arranged by customers.
Q: What is the difference between pure aluminum alloys?
All four alloys (1050, 1060, 1100, 1200) are pure aluminum with over 99% purity. The main differences are in impurity levels and resulting properties. 1060 offers the highest purity and elongation. 1050 is the most common grade. 1100 offers higher strength, and 1200 provides good corrosion resistance and weldability. All are food-grade.
Quality Assurance
Our aluminum circles are manufactured with strict quality controls to ensure:
- Smooth, round edges without sharp burrs (die-cut products)
- Clean surface, free from oil stains and scratches
- Consistent mechanical properties for reliable forming
- Full traceability with mill test certificates
- Compliance with international standards (ASTM, EN, GB/T)
Need aluminum circles for your cookware, lighting, or signage project? [Contact us today] with your alloy, diameter, thickness, and quantity requirements for a competitive quote.
