The aluminum sheets for roll bond evaporators cover three major alloy grades: 1050 O, 1060, and 3003-H24. The specifications, precision dimensional tolerances, and surface passivation processes are detailed, providing professional technical reference for global refrigeration equipment manufacturers in material selection.
Roll bond evaporators have stringent requirements for the flatness, plasticity, thermal conductivity, and dimensional tolerances of aluminum sheets. Our factory regularly stocks three mainstream alloy grades: 1050 O, 1060 pure aluminum, and 3003-H24, comprehensively covering the production needs of high-end and low-end evaporators. Standard plate thickness is 1.2-2.5mm, with a maximum width of 900mm. Custom length cutting is available upon request. Thickness tolerance is strictly controlled at ±0.03mm, and plate flatness is ≤2mm/m, ensuring a warp-free and gap-free roll bond bonding process from the source. 1050 O aluminum sheet exhibits outstanding plasticity, remaining soft and highly elongated in its annealed state. It is easily rolled, bent, and formed into flow channels, with no risk of cracking or springback, making it a preferred material for small household evaporators.
1050 aluminum sheet possesses the ultra-high thermal conductivity of pure aluminum, resulting in rapid heat exchange response, stable corrosion resistance, and compatibility with conventional environmentally friendly refrigerants. Its moderate production cost offers a significant cost-performance advantage. Compared to 3003-H24 aluminum sheet, 1050 O has slightly lower strength but superior formability, making it suitable for thin, lightweight, and simple roll bond evaporators. 3003-H24, on the other hand, offers stronger wind pressure resistance and aging resistance, and is primarily used in commercial freezers and industrial refrigeration equipment. 1060 aluminum sheet focuses on basic thermal conductivity and economic efficiency, suitable for low- to mid-range mass production orders.
All evaporator grade aluminum sheets undergo precision cleaning and passivation, resulting in a smooth, oil-free, and oxide-free surface with a uniform and fine microstructure. This ensures strong adhesion during roll forming and prevents delamination and leakage during long-term high and low temperature cycling. Salt spray resistance has undergone rigorous in-house testing, making them suitable for various overseas operating conditions, including the humid heat of Southeast Asia and the dryness of the Middle East. Export batches comply with RoHS environmental standards and support third-party testing and certification.
From a practical production application perspective, selecting matching grade evaporator aluminum sheets significantly reduces roll forming scrap rates, improving forming efficiency and finished product yield. Our factory, leveraging mature rolling technology, can perform customized soft annealing processes for 1050 O aluminum sheets, precisely controlling grain structure and completely resolving common production problems such as wrinkling and edge cracking during thin-material roll forming. We also support customized sizes, surface coating protection, and reinforced export packaging to ensure scratches and deformation during ocean transport, with stable and controllable delivery cycles.
With precise material grading, stringent tolerance control, and years of experience in export support, Haomei Aluminum can accurately recommend suitable aluminum sheets of 1050 O, 1060, and 3003 based on the customer’s equipment type, operating conditions, and cost budget. It also provides one-stop services for sample testing and process technology integration, helping overseas customers create high-performance, cost-effective roll bond evaporator products.