5052 Aluminum Discs for Street Light Lampshades

Title

Street lights are not just tools for illumination, they represent the aesthetics, safety, and energy efficiency of a city. The structure of a street light must be durable, corrosion-resistant, and visually appealing. Among all components, the lampshade plays a critical role in light distribution, heat dissipation, and long-term reliability.
Aluminum discs are the most commonly used material for lampshade manufacturing, and among them, 5052 aluminum discs stand out for their excellent performance.

Product Introduction

5052 aluminum alloy is an aluminum-magnesium alloy from the anti-corrosion series. It is known for its excellent cold-working properties, superior formability, and outstanding corrosion resistance. It is widely used in lighting, cookware, traffic signs, pressure vessels, and other applications.

5052 aluminum discs are typically produced from hot-rolled aluminum coils through blanking, cutting, or spinning. The surface can undergo anodizing, brushing, powder coating, and various finishing processes. With stable performance, smooth surfaces, and strict control over roughness and defects, 5052 discs are one of the best materials for manufacturing high-quality outdoor lighting lampshades.

Why Choose 5052 Aluminum Discs for Lighting Lampshades?

1. Excellent Formability

Whether in O-tempered condition for deep drawing or in H32/H34 temper for spinning, 5052 offers outstanding ductility. It ensures crack-free forming, stable dimensions, and precise lamp housing shapes.

2. Superior Corrosion Resistance

5052 aluminum naturally forms a protective oxide layer when exposed to air. This layer effectively prevents corrosion, ensuring the lampshade maintains its integrity even in humid or coastal environments.

3. High Thermal Conductivity

Aluminum has a very high thermal conductivity, enabling fast heat transfer from LED modules. This helps maintain a stable operating temperature for LED chips, extending the lifespan of the lighting fixture.

4. Optimal Strength

5052 has higher strength than pure aluminum, giving the lampshade better rigidity and wind-resistance after forming.

5. Lightweight

The lightweight nature of aluminum reduces the load on lamp poles, simplifies installation, and lowers transportation costs.

6. Excellent Surface Treatment Compatibility

5052 aluminum discs support a wide range of finishes, including anodizing, powder coating, polishing, brushing, and matte surfaces. These processes enhance both appearance and durability while ensuring consistent surface quality.

Technical Specifications of Lampshade Aluminum Discs

Alloy	5052
Temper	O / H32 / H34 / etc.
Diameter	80 mm - 1,200 mm
Thickness	0.5 mm - 6.0 mm
Surface Finish	Bright, brushed, matte, anodized
Production Method	CC / DC
Edge Processing	Rounded edge, deburring
Tolerance	±0.02 mm (thickness), ±0.5 mm (diameter)
Packaging	Moisture-proof wooden pallets, export-grade packing
Applications	Lampshades, traffic signs, cookware, trays, etc.
MOQ	1-3 tons

Comparison of Aluminum Alloys Used for Lampshades

Aluminum Series	Typical Alloy	Key Advantages	Main Limitations	Cost Level	Application
1xxx Series	1050 / 1060 (Pure Aluminum)	Very high reflectivity (easy to polish), lowest cost, excellent ductility for deep drawing	Low strength, poor wind resistance, lower corrosion resistance than 5xxx series	Low	Indoor lighting, low-demand lampshades
3xxx Series	3003 (Al-Mn)	Medium strength, good tensile performance, good weldability, good fatigue resistance	Lower corrosion resistance than 5052, harder to polish, lower reflectivity	Medium	Industrial lampshades requiring moderate strength
5xxx Series	5052 (Al-Mg)	High corrosion resistance, medium-high strength, excellent formability, good polishing performance	Slightly higher cost than 1xxx/3xxx series	Medium-high	Street lights, outdoor lighting, long-life reflectors
6xxx Series	6061 (Al-Mg-Si)	Highest strength, excellent thermal conductivity, good for structural components	Poor formability (not ideal for deep drawing), higher cost, requires heat treatment	High	Heat sinks, lamp housings-not commonly used for reflectors

From the comparison, it's clear that 5052 aluminum offers the best balance of strength, fatigue resistance, corrosion resistance, and surface quality. It is especially suitable for outdoor street lights that must withstand wind loads and harsh weather conditions.

Production Process of Lampshade Aluminum Discs

1. Spinning Forming

Spinning is the traditional process used for aluminum bowl-shaped reflectors. It allows aluminum discs to be formed into various curved reflector shapes efficiently and cost-effectively.

2. Stamping and Deep Drawing

Modern lampshade production often uses automated stamping lines. From coil decoiling to blanking and forming, the entire production process is automated. This ensures high dimensional accuracy and scratch-free discs.

3. Surface Treatment

5052 aluminum can undergo anodizing to create a dense oxide layer, improving corrosion resistance and surface hardness.

4. Laser Marking and Engraving

Laser technologies allow decorative or functional patterns to be engraved on the aluminum surface, giving lampshades unique nighttime lighting effects.

How Much Does 5052 Aluminum Circle Cost per Ton?

The price of aluminum disc lampshades depends on the daily aluminum ingot price, processing cost, shipping cost, and product specifications such as alloy, thickness, and diameter.
To receive an accurate quotation, please send us your specifications (alloy number, thickness, diameter).
Our professional sales team will provide a detailed offer.