Matte black color aluminium circle 50*2
A matte black color aluminium circle 50×2 is a precision-cut round aluminium disc with a 50 mm diameter and 2 mm thickness, finished with a non-gloss, low-reflectance black surface. This format is widely chosen for parts that must look clean and modern while still benefiting from aluminium's light weight, corrosion resistance, and excellent machinability. Typical use cases include decorative end caps, knobs and dials, small housings, signage elements, furniture hardware, lighting components, and prototype parts where both appearance and performance matter.
What Makes the Matte Black Aluminium Circle Different
Matte black is not only a color choice-it is a functional surface. Compared with bright anodized or polished metal surfaces, matte black helps reduce glare, fingerprints, and visual distractions. It also pairs well with modern industrial design, especially where contrast with stainless steel, glass, or wood is desired.
advantages you can expect:
- Low reflectivity for a premium, understated appearance
- Good scratch and wear performance when anodized or coated correctly
- Improved corrosion resistance when surface-treated properly
- Lightweight strength in a compact disc geometry
- Excellent processability for CNC, drilling, engraving, and forming
Typical Material Options (Common Alloy Choices)
Aluminium circles are produced from rolled sheet or plate, then cut using punching, CNC routing, or laser/waterjet depending on tolerance and edge requirements. The best alloy depends on whether your priority is forming, machining, strength, or corrosion performance.
Recommended alloys for 50×2 circles
| Alloy | Temper (common) | strengths | Best suited for |
|---|---|---|---|
| 1050 / 1060 | O, H12, H14 | Very good formability, high conductivity | Decorative discs, spinning, light stamping |
| 1100 | O, H14 | Balanced formability and corrosion resistance | Covers, trims, light-duty plates |
| 3003 | O, H14 | Better strength than 1xxx, excellent corrosion resistance | General hardware, kitchen/architectural parts |
| 5052 | O, H32 | High corrosion resistance, stronger, good fatigue | Marine/industrial environments, durable components |
| 6061 | T6 | High strength, great machining | CNC parts, structural small components |
Matte Black Surface Finish Options
The "matte black" effect can be achieved using different surface treatments. Each process has its own advantages regarding durability, color consistency, scratch resistance, and cost.
| Finish method | Appearance | Durability | Typical thickness | Notes |
|---|---|---|---|---|
| Black anodizing (Type II) | Deep matte to satin | High | ~10–25 μm | Excellent corrosion resistance and color stability |
| Hard anodizing (Type III) + dye/seal | Dark matte | Very high | ~25–60 μm | Best wear resistance; color may vary by alloy |
| Powder coating (matte) | Uniform matte | High | ~60–120 μm | Strong coverage; hides minor surface marks |
| PVDF / coil coating (matte) | Premium matte | Very high | ~20–30 μm | Great outdoor performance; usually for sheet then cut |
| Black painting (industrial) | Matte | Medium | Varies | Cost-effective, but typically lower wear resistance |
Practical note: If your design requires tight tolerances on thickness or diameter, coatings such as powder coating add measurable build. Anodizing adds minimal dimensional change, making it a preferred choice for precision-fit parts.
Technical Specifications (50×2 Standard)
The following table outlines typical specifications for a 50 mm × 2 mm aluminium circle. Values can be customized according to customer requirements, chosen alloy, and production method.
| Item | Specification |
|---|---|
| Product name | Matte black color aluminium circle |
| Nominal diameter | 50 mm |
| Nominal thickness | 2.0 mm |
| Shape | Round disc / circle |
| Surface | Matte black (anodized / coated, customer-specified) |
| Edge condition | Deburred; optionally chamfered or radius edge |
| Flatness | Controlled by base sheet and cutting process |
| Protective film | Optional PE film for scratch prevention |
| Typical production methods | Punching, CNC cutting, laser, waterjet |
Chemical Composition (Typical Reference Ranges)
Because "aluminium circle" may be produced in different alloys, the chemical composition depends on the selected grade. Below are common reference compositions for widely used alloys. Final certificates should follow the applicable standard (such as ASTM, EN, GB, JIS).
1050 Aluminium (typical)
| Element | Al | Fe | Si | Cu | Mn | Mg | Zn | Ti |
|---|---|---|---|---|---|---|---|---|
| Typical max % | Balance | 0.40 | 0.25 | 0.05 | 0.05 | 0.05 | 0.05 | 0.03 |
3003 Aluminium (typical)
| Element | Al | Mn | Cu | Fe | Si | Zn | Mg |
|---|---|---|---|---|---|---|---|
| Typical % | Balance | 1.0–1.5 | 0.05–0.20 | ≤0.70 | ≤0.60 | ≤0.10 | ≤0.05 |
5052 Aluminium (typical)
| Element | Al | Mg | Cr | Fe | Si | Cu | Mn | Zn |
|---|---|---|---|---|---|---|---|---|
| Typical % | Balance | 2.2–2.8 | 0.15–0.35 | ≤0.40 | ≤0.25 | ≤0.10 | ≤0.10 | ≤0.10 |
Performance Features for Customers
Stable geometry for assembly
A 50×2 disc is small enough for compact designs but thick enough to remain stable for many fastening and mounting methods. With proper flatness control and deburring, the circle can be used directly in assemblies that require clean contact surfaces.
Excellent machinability and finishing compatibility
Aluminium circles are easy to drill, tap, engrave, and mill. Matte black finishes work especially well with laser marking, white fill engraving, or contrast graphics, making the part suitable for branded hardware and functional labels.
Corrosion resistance you can select
If the product will be used indoors, many finishes and alloys perform well. For humid, industrial, or outdoor environments, pairing 5052 + anodizing or 3003 + high-quality coating provides a strong balance of durability and cost.
Typical Applications
| Application area | How 50×2 matte black circles are used | Why matte black aluminium is chosen |
|---|---|---|
| Lighting & décor | Lamp base plates, covers, trim discs | Reduces glare, modern appearance |
| Furniture hardware | End caps, feet plates, connector covers | Scratch-resistant look, clean aesthetics |
| Electronics & instruments | Dial plates, sensor covers, small housings | Low reflection, easy marking and machining |
| Signage & branding | Logo discs, mounting plaques | High contrast, premium finish |
| Prototyping & R&D | Test coupons, small mechanical parts | Fast machining, consistent geometry |
| Industrial equipment | Guards, spacers, cover discs | Corrosion resistance, durable coating |
Recommended Options When Ordering
| Customer need | Suggested choice |
|---|---|
| Highest wear resistance | Hard anodizing (Type III) on a suitable alloy |
| Best cosmetic uniformity | Powder coating matte black with protective film |
| Tight tolerance fit | Black anodizing (Type II) to minimize build-up |
| Outdoor exposure | PVDF/quality coating system or anodizing with proper sealing |
| Heavy machining | 6061-T6 with anodizing (confirm color consistency requirement) |
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