Aluminum discs blank
Aluminum discs blank (also known as aluminum circles or aluminum blanks) are flat, circular aluminum sheets cut or stamped from aluminum coils or plates. They are semi-finished products, designed for further processing rather than direct use in end products.
Aluminum disc blanks serve as starting materials for various industrial and creative processes. Due to aluminum's light weight, corrosion resistance, and excellent ductility (ease of forming), these blanks have wide applications.
What are Aluminum discs blank?
Aluminum discs blank are "circular raw materials" used before further deep processing (such as stamping, drawing, spinning) into final products (such as cookware, lampshades, capacitor shells, etc.).
Aluminum disc blanks (also commonly called aluminum circles, aluminum discs, aluminum rounds, or aluminum circle blanks/discs) are flat, circular semi-finished aluminum or aluminum alloy products, usually serving as basic materials for subsequent processes like deep drawing, spinning, and stamping, and are widely used across multiple industries.
Haomei Aluminum disc blanks have uniform thickness, smooth edges, and strictly controlled surface quality, ensuring that every piece meets high production standards. They are ideal base materials for deep drawing, spinning, stamping, and pressing processes, providing customers with stable and reliable processing performance and high finished product yield.
Features of Aluminum discs blank
- High purity and stable quality (common grades: 1050, 1060, 1070, 1100, 3003, 5052)
- Excellent formability, especially in annealed condition (O temper)
- Smooth edges without burrs, suitable for deep drawing
- Good corrosion resistance and thermal conductivity
- Customizable diameter and thickness
Specifications of Aluminum discs blank
- Material: Usually pure aluminum (e.g., 1050, 1060, 1100) or aluminum alloys (e.g., 3003, 5052, 6061, etc.), selected according to the performance requirements of the final product (e.g., strength, thermal conductivity, corrosion resistance, deep drawing capability).
- Temper: O, H12, H14, H24, H32
- O temper (annealed): Softest texture, excellent ductility, very suitable for deep drawing forming (e.g., making pots and cups).
- H temper (work-hardened): Such as H14, H18, with higher hardness, suitable for applications requiring strength or minimal deformation.
- Thickness: Generally thin, ranging from approximately 0.2mm to 10.0mm, commonly 0.5mm-3.0mm.
- Diameter: Approximately 50mm – 1600mm (customizable)
- Surface treatment: Mill finish, anodized, coated, PE/PVC protective film
- Tolerance: Diameter and thickness are strictly controlled (e.g., ±0.05mm or higher), which is crucial for subsequent automated production.
- Surface quality: Depending on requirements, it can be untreated bright, matte, or pretreated surfaces (e.g., oiled for rust prevention, passivated).
Aluminum discs blank Alloys & Grades
| Representative Grades | Main Features | Typical Applications |
| 1050, 1060, 1100, 1070 | High purity, excellent electrical and thermal conductivity, and formability | Cookware, tableware, lighting fixtures, capacitor shells |
| 3003 | Good corrosion resistance and formability, medium strength | Cookware, signage, electrical components, cans |
| 5005, 5052, 5754 | Excellent corrosion resistance, good balance of strength and ductility | Pressure vessels, ship components, decorative materials |
| 6061 | High strength, good weldability and corrosion resistance | Mechanical parts, automotive components, structural parts |
- Material Features: Aluminum content ≥99.6%, belongs to high-purity aluminum, excellent electrical and thermal conductivity, good plasticity, easy to process.
- Main Applications: Electronic devices, cookware, packaging materials, decorative panels, etc.
- Processing Advantages: Soft in O temper, suitable for deep drawing and stamping, smooth surface, can be anodized.
- Material Features: Aluminum content ≥99.7%, outstanding pure aluminum performance, strong corrosion resistance, excellent ductility.
- Main Applications: Cookware, deep-drawn containers, electronic components, and packaging materials.
- Processing Advantages: O temper suitable for deep processing, H12/H14 semi-hard temper provides certain strength, easy for surface treatment and coating.
- Material Features: Aluminum content ≥99%, industrial pure aluminum, low strength but excellent corrosion resistance, good thermal and electrical conductivity.
- Main Applications: Stamped parts, decorative panels, reflectors, construction materials.
- Processing Advantages: Soft and easy to process, suitable for stamping, drawing, and anodizing, ideal for products requiring high ductility rather than high strength.
- Material Features: Al-Mn series alloy, aluminum content about 96.8%, enhanced strength and corrosion resistance, lightweight.
- Main Applications: Roofing, ship plates, automotive parts, heat exchangers, and outdoor equipment.
- Processing Advantages: Good oxidation resistance, easy to stamp, form, and weld, surface can be painted or anodized.
- Material Features: Al-Mg series alloy, aluminum content about 97.5%, high strength, excellent corrosion resistance, especially seawater resistant.
- Main Applications: Ships, automotive fuel tanks, pressure vessels, electronic instrument casings.
- Processing Advantages: Available in O / H32 / H34 tempers, suitable for stamping, deep drawing, welding, and anodizing, well-balanced performance.
6061 Aluminum Discs Blank
- Material Features: Al-Mg-Si series alloy, aluminum content about 97.9%, high strength, good hardness, excellent corrosion resistance and mechanical performance.
- Main Applications: Aerospace components, machined parts, bicycle parts, precision instruments.
- Processing Advantages: Can be T6 heat-treated for strength, suitable for machining, welding, and anodizing, high surface hardness, good dimensional stability.
Aluminum discs blank surface finishes
Non-stick Coated aluminum discs blank
- Pre-coated with Teflon (PTFE) or ceramic coating.
- Features: Food does not stick, high temperature resistant, easy to clean, ready for spinning after purchase.
- Applications: Frying pans, woks, baking trays.
Color Coated / Prepainted aluminum discs blank
- Surface coated or sprayed with organic paint (PE/PVDF).
- Features: Accurate and rich colors, flexible coating, does not peel during deep drawing.
- Applications: Architectural decorative ceilings, colored bottle caps, road signs.
Polished aluminum discs blank
- Mechanically or chemically polished.
- Features: Mirror-like surface, high reflectivity, enhances product grade.
- Applications: High-end lighting reflectors, cosmetic packaging, decorative covers.
Mill Finish aluminum discs blank
- Directly stamped after rolling, no additional surface treatment.
- Features: Lowest cost, retains original aluminum color, good basic thermal conductivity.
- Applications: Basic cookware (pots, bowls), traffic signs, standard lampshades.
Brushed aluminum discs blank
- Produced with mechanical brushing to create uniform linear patterns.
- Features: Matte metallic texture, fingerprint resistant, effectively hides minor scratches from daily use.
- Applications: Electronic knobs, home appliance panels, high-end cookware accessories.
Anodized aluminum discs blank
- Surface treated electrochemically to form a hard oxide layer.
- Features: Very high hardness and corrosion resistance, color-stable, customizable in red, gold, black, etc.
- Applications: Phone casing parts, high-end rice cooker inner pots, crafts.
PVC Film Protected aluminum discs blank
- Transparent, blue, or white plastic film applied to the surface of finished discs.
- Features: Protects from scratches and contamination during transport, stamping, and assembly, removed after completion.
- Applications: All aluminum disc products requiring extreme surface smoothness.
Spinning / Deep Drawing Quality Discs
- Optimized for forming processes, usually in O temper (fully soft).
- Features: Extremely high ductility, smooth edges after stamping (no ears), no "orange peel" effect on surface.
- Applications: High-depth pressure cookers, kettles, gas cylinders, complex-shaped lighting fixtures.
| Product Type | Additional Key Parameters | Common Alloy / Temper Recommendations |
| Mill Finish aluminum discs blank | Surface free of oil, scratches, and black spots. | 1050 / 1060 - O/H14 |
| Spinning / Deep Drawing Quality Discs | Grain size: controlled at 0.025-0.040mm; Ear formation rate: < 3%. | 1050 / 3003 - O temper |
| Polished aluminum discs blank | Reflectivity: usually 85% - 95% (Mirror Finish). | 1050 / 1085 - H18 |
| Brushed aluminum discs blank | Grain direction: Long line (Straight line) or Short line (Scratched). | 5052 / 1050 - H14 |
| Anodized aluminum discs blank | Film thickness (Micron): 5μm - 25μm; Hardness: ≥200HV. | 5052 / 1100 - H14 |
| Non-stick Coated aluminum discs blank | Coating thickness: 2 layers (25μm) or 3 layers (35μm); Scratch resistance: tested with coin hardness. | 3003 / 1050 - H14/H24 |
| Color Coated / Prepainted aluminum discs blank | Coating type: PE (indoor) / PVDF (outdoor); Gloss: Matte / Gloss optional. | 3003 / 3105 - H14 |
| PVC Film Protected aluminum discs blank | Film type: standard transparent film, blue film, black/white laser film; Adhesion: low / medium tack. | Suitable for all precision-finished surfaces |
Applications of Aluminum discs blank
- Cookware: Base materials for pots, frying pans, pressure cookers, non-stick pans, skillets, woks, aluminum pots, kettles, baking trays.
- Lighting Industry: Reflectors and lampshades, LED covers, reflective shields, lighting housings, etc.
- Traffic Signs: Traffic indicators, warning signs, speed limit signs, prohibition signs, etc.
- Electronics: Capacitor housings, heat sink blanks, motor end covers, battery casings.
- Automotive Parts: Automotive lampshades, sensor housings, decorative covers.
- Daily Hardware: Bottle caps, cigarette cases, badges, signs.
- Packaging Industry: Food cans, beverage cans, cosmetic containers, including bodies and lids.
- Other Fields: Decorative parts, medical device components, aluminum rods for cold extrusion blanks, etc.
Haomei High-Standard Quality Control for Aluminum Disc Blanks
As a professional manufacturer of aluminum discs, Haomei Aluminum implements strict quality control standards throughout the entire production process, ensuring that every aluminum disc blank is stable, reliable, and meets high-end application requirements.
Surface Quality Control
A combination of online inspection and manual re-inspection is employed to ensure the surface of aluminum disc blanks is clean and flat, free of scratches, oil stains, oxidation spots, black spots, or any defects affecting appearance and subsequent processing.
Dimensional Accuracy Control
High-precision cutting and stamping equipment are used to strictly control the diameter and thickness tolerances of aluminum disc blanks, fully meeting customer drawings and customized technical requirements, ensuring batch-to-batch consistency.
Edge Quality Control
Aluminum disc blanks with thickness ≥1.0mm undergo dedicated deburring and edge trimming to ensure neat and smooth edges, free of burrs or cracks, suitable for deep drawing and stamping.
Performance Indicator Testing
Key mechanical properties such as hardness, tensile strength, and elongation are strictly tested to ensure compliance with ASTM, EN, GB standards, and any special customer requirements.
Aluminum discs blank Processing
Depending on the base material, aluminum disc blanks can be divided into hot-rolled (better stretch effect, no orange peel, wrinkle-free, suitable for anodizing, higher cost) and cold-rolled (lower cost, suitable for general purposes) types.
Hot-Rolled Aluminum Discs Blank
Material Features: Made by high-temperature hot rolling, uniform grain, stable structure, good surface quality.
Processing Advantages:
- Excellent stretchability; unlikely to form wrinkles or orange peel during deep drawing.
- Smooth surface, suitable for anodizing or other high-end surface treatments.
- High dimensional accuracy, uniform thickness, high yield.
Suitable Applications: High-end cookware, precision electronic enclosures, premium decorative parts, and deep-drawn products.
Cost Characteristics: Relatively higher price, but more stable processing performance and surface quality; suitable for applications with strict quality requirements.
Cold-Rolled Aluminum Discs Blank
Material Features: Produced by room-temperature rolling, smooth surface, slightly higher grain hardness, strength slightly higher than hot-rolled.
Processing Advantages:
- Lower cost, suitable for mass production and general purposes.
- Can be stamped, shallow drawn, and processed for ordinary manufacturing needs.
- Smooth surface, can be painted or protected with a film.
Suitable Applications: Everyday cookware, general packaging materials, industrial components, or products with lower surface quality requirements.
Cost Characteristics: More economical, high cost-performance, but deep drawing and high-end surface finishing capabilities are inferior to hot-rolled material.
Typical Sizes of Aluminum Discs Blank
| Disc Size | Diameter | Thickness |
| 4 inch aluminum disc blank | 101.6 mm | 1 mm to 10 mm |
| 5 inch aluminum disc blank | 127 mm | 1 mm to 10 mm |
| 6 inch aluminum disc blank | 152.4 mm | 1 mm to 10 mm |
| 8 inch aluminum disc blank | 203.2 mm | 1 mm to 10 mm |
Chemical composition of aluminium discs blank
| Alloy | Si | Fe | Cu | Mn | Mg | Zn | V | Ti | Other | Al |
| 1050 | 0.25 | 0.4 | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 | 0.03 | 0.03 | 99.5 |
| 1060 | 0.25 | 0.35 | 0.05 | 0.03 | 0.03 | 0.05 | 0.05 | 0.03 | 0.03 | 99.6 |
| 1070 | 0.25 | 0.25 | 0.04 | 0.03 | 0.03 | 0.04 | 0.05 | 0.03 | 0.03 | 99.7 |
| 1100 | 0.95 | 0.95 | 0.05-0.2 | 0.05 | / | 0.1 | / | / | 0.05 | 99 |
| 3003 | 0.6 | 0.7 | 0.05-0.2 | 1.0-1.5 | / | 0.1 | / | / | 0.15 | 96.95-96.75 |