As the production technology manager at Haomei Aluminum, I have 12 years of experience in the aluminum processing industry, handling the export of fan blade aluminum sheets to over 30 countries worldwide. While the aluminum sheets for fan blades may seem simple, they actually have stringent requirements regarding material properties, surface treatment, and dimensional accuracy, directly impacting product lifespan and operational efficiency.
Aluminum sheets for fan blades are customized substrates adapted to various fan rotating components. Their performance directly determines the fan’s operating efficiency and lifespan. These aluminum sheets are specialized materials developed for high-speed rotating components such as fans, industrial fans, and cooling tower fans. The core requirements are lightweight, high strength, fatigue resistance, corrosion resistance and good aerodynamic properties. We select alloys from the 5052, 6061, and 1100 series, and through precise composition control and heat treatment processes, ensure the consistency of mechanical properties and surface quality in each batch of sheets, meeting the needs of all scenarios, from household ceiling fans to industrial giant fans.
Our fan blade aluminum sheets are manufactured strictly according to international standards, and their core specifications can be precisely matched to different application scenarios such as household, industrial, and large-scale fans. Our fan blade aluminum sheets strictly adhere to the international standards ASTM B209, EN 485, with the following core specifications:
– Alloy Series: 5052-H32 (mainstream, suitable for industrial fans), 6061-T6 (high strength, for large fans), 1100-H14 (domestic fans, cost-optimized)
– Thickness Range: 1.5–4.0mm (domestic 1.5–2.0mm, industrial 2.5–3.5mm, large fans 3.0–4.0mm)
– Width: 1000–1500mm (customizable), length ≤6000mm
– Tolerance Control: Thickness tolerance ±0.05mm, flatness ≤2mm/m² (ensuring blade balance)
– Mechanical Properties: 5052-H32 tensile strength 170–305 MPa, yield strength ≥90 MPa, elongation ≥12%.
During production, we employ an online thickness monitoring system and ultrasonic testing to ensure the sheet metal is free of internal defects, which is crucial for the safety of high-speed rotating components.
Based on different operating conditions, we offer three core surface treatment solution of aluminum fan blade sheets, balancing practicality and adaptability.
1. Mill Finish
– Maintains the natural aluminum color, smooth surface, low air resistance, suitable for household fans and low-corrosion environments.
– Advantages: Low cost, easy processing, good heat dissipation, suitable for industrial scenarios where appearance requirements are not high.
– Typical applications: Southeast Asian household ceiling fans, ordinary workshop exhaust fans, annual export volume exceeding 2000 tons.
2. Anodized
– Generates a dense oxide film of 5–25μm, with a hardness of HV300+, improving corrosion resistance by more than 10 times.
– Available in natural, bronze, black, etc., with controllable surface conductivity.
– Advantages: Wear-resistant, UV-resistant, and fade-resistant, suitable for outdoor and high-humidity environments.
– Technical details: Employs sulfuric acid anodizing process, with sealing treatment to ensure film density, salt spray test ≥1000 hours.
3. Coated
– Powder Coating: Thickness 60–120μm, excellent weather resistance, RAL full color range available, suitable for scenarios with high aesthetic requirements.
– PVDF Coating: Fluorocarbon resin, weather resistance ≥20 years, suitable for large wind turbines in extreme climates.
– Advantages: Corrosion resistant, easy to clean, highly decorative, suitable for harsh environments such as coastal areas and chemical plants.
– Production Control: Coating adhesion reaches Grade 0 (cross-cut test), impact strength ≥50kg·cm.
Based on mature production processes and export experience, our fan blade aluminum sheets have significant advantages in performance, manufacturing precision, and service.
1. Lightweight and Strength Balance:
Density only 2.7g/cm³, 66% lighter than steel, thinner blades for the same strength, reducing motor load, and achieving measured energy savings of 15–20%. Our 3.0mm 5052 blades, customized for Middle Eastern customers, have shown no deformation after 5000 hours of continuous operation at 60℃.
2. Fatigue Resistance and Stability:
Through T4/T6 heat treatment and roll forming, the material’s fatigue limit is enhanced, making it suitable for long-term high-speed rotation (up to 1500 rpm). A European customer reported that cooling tower fans manufactured using our 6061-T6 sheet metal have had their lifespan extended from 2 years to 5 years.
3. Precision Manufacturing and Balance Control:
Utilizing a four-roll reversible cold rolling mill and tension straightening ensures sheet flatness ≤1.5mm/m² and weight deviation ≤2g per square meter, significantly reducing blade dynamic balancing costs. In an industrial fan project exported to the United States, the customer saved 40% on balancing process time as a result.
4. Customization and Fast Delivery:
We maintain a stock of 5052/6061, shipping regular orders within 7-15 days and responding to urgent orders within 48 hours. Our custom-designed curved blades for an African customer are formed in one piece using CNC bending, achieving a 99.8% pass rate.
Haomei Aluminum’s fan blade aluminum sheets, driven by technology and supported by experience, provide global customers with high-quality materials and end-to-end technical solutions. As a professional manufacturer, Haomei Aluminum not only provides materials but also offers full-process technical support—from alloy selection and surface treatment recommendations to processing optimization. Our products are ISO9001, SGS, RoHS certified, with export volume increasing for five consecutive years. For technical consultation or sample testing, please contact our engineering team to provide the most suitable material solutions for your fan products.