Aluminum Circle
Aluminum Disc (also known as Aluminum Circle) is a circular aluminum sheet product processed from high-quality aluminum coils or sheets through blanking, punching, or spinning. It is an important product form in the aluminum deep-processing industry chain, featuring high dimensional accuracy, good surface quality, neat edges, and high material utilization. It serves as excellent feedstock for subsequent secondary processing such as stamping, deep drawing, and spinning. Our aluminum discs cover 1xxx, 3xxx, 5xxx, and other alloy series, with complete specifications, clean surfaces, and excellent workability. They are widely used in cookware manufacturing, lighting, transportation, chemical containers, electronics, and more. With our strong aluminum coil production capacity and advanced slitting and blanking equipment, we provide one-stop supply services from coils to discs.
I. Product Classification
Classification | Type | Description |
By Alloy Series | 1xxx Pure Aluminum Disc (1060, 1100) | Purity ≥99.0%, good plasticity, excellent deep-drawing performance; most commonly used for cookware and lighting |
| 3xxx Al-Mn Alloy Disc (3003) | Good anti-rust performance, higher strength than pure aluminum; suitable for chemical containers and outdoor use |
| 5xxx Al-Mg Alloy Disc (5052) | High strength, excellent corrosion resistance; suitable for marine, vehicle, and highly corrosive environments |
By Temper | O (Annealed / Fully Soft) | Lowest strength, best plasticity; most suitable for deep drawing and spinning |
| H12 / H22 (1/4 Hard) | Light work-hardening, good plasticity; suitable for shallow drawing and stamping |
| H14 / H24 (1/2 Hard) | Medium strength, balanced properties; suitable for general stamping applications |
| H18 (Full Hard) | Highest strength, low plasticity; suitable for rigid applications not requiring drawing |
By Surface Condition | Mill Finish | Standard rolled surface; suitable for general use |
| Film-Laminated | PE protective film applied (single or double-sided); prevents scratches and oxidation |
| Oiled | Volatile anti-rust oil applied; suitable for stamping and drawing processing |
By Edge Condition | Burr Edge | Slight burrs after blanking; suitable for applications with subsequent trimming |
| Finished Edge | Deburred; smooth and neat edges; suitable for finished products |
By Supply Form | Individual Sheets | Flat stacked; suitable for small batches or manual production lines |
| Stacked Supply | Same-specification discs stacked neatly; suitable for automated stamping lines |
II. Product Specifications
Item | Parameters |
Alloy Range | 1xxx (1060, 1100), 3xxx (3003), 5xxx (5052), etc.; other grades available upon request |
Diameter Range | 80mm – 1200mm (customizable) |
Thickness Range | 0.30mm – 6.0mm (customizable) |
Diameter Tolerance | Standard ±0.5mm / Precision ±0.2mm (controllable per customer requirements) |
Thickness Tolerance | Standard ±0.05mm / Precision ±0.02mm (based on substrate accuracy) |
Temper | O, H12, H14, H18, etc. |
Surface Treatment | Mill finish, film-laminated (single/double-sided), oiled (optional) |
Edge Treatment | Burr edge / Finished edge (deburred) |
Applicable Standards | GB/T 3880 / ASTM B209 / EN 485 |
III. Product Features
Feature | Description |
High Dimensional Accuracy | Precision blanking dies; diameter tolerance controllable within ±0.2mm, ensuring consistency in downstream processing |
Good Surface Quality | High-quality aluminum coils as raw material; surface free from scratches, oxidation spots, oil stains, and other defects |
Neat Edges | Smooth blanking edges; no cracks, no burrs (finished edge); reduces cracking risk in subsequent processing |
Excellent Deep-Drawing Performance | O-temper discs offer outstanding deep-drawing properties; suitable for deep-drawn products like cookware and containers |
High Material Utilization | Disc shape matches product forms like cookware and lighting; significantly reduces material waste |
Complete Specifications | Diameter 80mm–1200mm, thickness 0.30mm–6.0mm; covering diverse application needs |
Film/Oiling Options | Film lamination prevents surface scratches; oiling aids stamping and drawing; both extend product shelf life |
Flexible Alloy Selection | Different alloy series match different performance requirements; we can recommend the most suitable material |
100% Recyclable | Fully recyclable; processing scrap can also be recovered and reused |
IV. Application Fields
Application Field | Specific Uses |
Cookware Manufacturing | Aluminum pots, pans, frying pans, saucepans, pressure cookers, rice cooker inner pots, baking trays, bakeware molds |
Lighting | LED lamp housings, light cups, reflectors, industrial lamp shades, streetlight housings, floodlight casings |
Transportation | Automotive wheel covers, fuel tank caps, decorative caps, motorcycle parts, vehicle nameplates |
Chemical Containers | Chemical drum lids, sealed tank covers, storage tank heads, reactor heads, gas cylinder heads |
Electronics & Electrical | Heatsink bases, speaker diaphragms, capacitor housings, EMI shielding covers |
Hardware & Daily Use | Kettle bases, coffee pot bases, thermos lids, cosmetic jar lids, decorative discs |
Food Packaging | Food can lids, beverage can bottoms, milk powder can lids, candy box lids |
Building & Decoration | Decorative discs, ceiling decorative parts, signs and nameplates, light box panels |
Aerospace | Aircraft skin stampings, hatch cover panels, instrument panel blanks |
Other Industrial | Sealing gaskets, flange blanks, gear blanks, transmission disc blanks |
V. Common Alloy Performance Comparison
Alloy Grade | Typical Temper | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Deep-Draw Performance | Key Characteristics | Typical Applications |
1060 | O | 60 – 95 | ≥20 | ≥25 | Excellent | High purity, good plasticity, economical | General cookware, lighting, hardware |
1060 | H14 | 95 – 130 | ≥75 | ≥10 | Average | Medium strength, acceptable plasticity | Shallow stampings, decorative covers |
1100 | O | 75 – 110 | ≥35 | ≥22 | Excellent | Industrial pure aluminum, balanced properties | Premium cookware, reflector shades |
3003 | O | 95 – 140 | ≥50 | ≥20 | Excellent | Good anti-rust, higher strength than pure aluminum | Chemical container lids, outdoor lighting, corrosion-resistant parts |
3003 | H14 | 130 – 180 | ≥85 | ≥10 | Average | Medium strength, good anti-rust | General structural stampings |
5052 | O | 175 – 220 | ≥65 | ≥20 | Good | High strength, seawater corrosion resistant | Marine parts, wheel covers, high-strength components |
VI. Common Disc Diameter & Thickness Recommendations
Diameter Range (mm) | Recommended Thickness Range (mm) | Typical Applications |
80 – 150 | 0.30 – 0.80 | Bottle caps, small decorative pieces, heatsinks |
150 – 300 | 0.50 – 1.50 | Lamp housings, speaker diaphragms, small pot bases |
300 – 500 | 0.80 – 2.50 | Cookware bodies, chemical drum lids, automotive parts |
500 – 800 | 1.20 – 4.00 | Large pots, pressure vessel heads, wheel covers |
800 – 1200 | 2.00 – 6.00 | Large heads, storage tank covers, aerospace parts |
VII. Aluminum Disc Processing Flow
Process Step | Description |
① Raw Material Inspection | Coil inspection to verify alloy grade, temper, thickness, and surface quality |
② Uncoiling & Leveling | Coil uncoiling → Leveling to eliminate coiling stress and ensure flatness |
③ Blanking / Punching | Blanking dies or spinning machines used per customer's diameter requirements |
④ Edge Treatment | Optional deburring and finishing for smooth, neat edges |
⑤ Film/Oiling Application | PE protective film or anti-rust oil applied per customer requirements |
⑥ Inspection | Diameter, thickness, surface quality, and edge quality inspection |
⑦ Packaging | Classification stacking → Paper/plastic wrapping → Pallet fixing → Labeling |
VIII. Quality Control
Test Item | Standard | Description |
Chemical Composition | GB/T 3190 / ASTM B209 | Direct-reading spectrometer analysis ensuring alloy elements meet standards |
Diameter Accuracy | GB/T 3880 | Caliper/micrometer measurement; tolerances meet customer requirements |
Thickness Accuracy | GB/T 3880 | Micrometer multi-point measurement; thickness deviation within standard range |
Surface Quality | Visual / bright light inspection | No scratches, oil stains, oxidation spots, corrosion, indentations, etc. |
Edge Quality | In-house standard | Smooth edges, no burrs, cracks, or serrated defects |
Flatness | In-house standard | Flat surface, no noticeable warping or waviness |
Cupping Test (Deep-Draw Performance) | GB/T 4156 / ISO 20482 | Simulates deep-drawing processing to detect cracking tendency |
Hardness | GB/T 231 / ASTM E10 | Brinell/Webster hardness testing to verify correct temper |
IX. Packaging Method
Packaging Step | Description |
Cleaning | Ensure disc surfaces are clean, free from oil and dust before packaging |
Stacking by Specification | Same-specification discs neatly stacked; kraft paper or PE film between layers |
Bundle Wrapping | Entire bundle tightly wrapped with moisture-proof plastic film or rust-proof paper |
Pallet Fixing | Bundle placed on wooden or heat-treated plywood pallets; cross-bundled with steel strips |
Edge Protection | Paper or plastic edge protectors at corners to prevent impact damage |
Labeling | Product label attached (alloy grade, specification, diameter, thickness, quantity, production date, etc.) |
Individual Film Lamination | For high surface quality requirements, each disc film-laminated before stacking |
X. Why Choose Yixintong's Aluminum Discs?
Advantage | Description |
Factory Direct | Full industry chain from coil production to disc processing; no intermediaries; strong price competitiveness |
In-House Substrate | Self-produced high-quality aluminum coils as raw material; quality traceable from the source |
Complete Specifications | Diameter 80mm–1200mm, thickness 0.30mm–6.0mm; covering most application needs |
Precision Control | Precision blanking dies; diameter tolerance up to ±0.2mm; ensures downstream processing consistency |
Excellent Deep-Draw Performance | O-temper discs have excellent elongation; suitable for deep-drawn cookware products without cracking |
Diverse Surface Treatments | Mill finish, film-laminated, oiled, and more to suit different processing requirements |
Strong Production Capacity | Annual comprehensive capacity over 3 million tons; reliable delivery for large orders |
Scrap Recovery | Processing scrap can be recovered to create additional value for customers |
Rich Export Experience | Products exported to many countries and regions; trusted by overseas customers |
