3003 Aluminum Sheets for Auto Radiator

3003 aluminum sheets is one of the most widely used materials in automotive radiator manufacturing due to its excellent balance of corrosion resistance, formability, thermal conductivity, and cost-effectiveness.

Why Choose 3003 Aluminum Sheets for Auto Radiators?

Good Corrosion Resistance

3003 aluminum contains manganese (Mn), which enhances its resistance to oxidation and corrosive environments, including coolant fluids and road salts.

High Thermal Conductivity

Efficient heat dissipation is crucial for radiators, and 3003 aluminum offers good thermal conductivity (~190 W/m·K), helping engines cool effectively.

Excellent Formability & Weldability

The alloy is easily formed into fins, tubes, and tanks without cracking, making it ideal for complex radiator designs.

Compatible with brazing and welding techniques commonly used in radiator manufacturing.

Lightweight & Cost-Effective

Aluminum reduces vehicle weight compared to copper or brass radiators, improving fuel efficiency.

More affordable than high-performance alloys like 6061 or 5052 while still meeting radiator requirements.

3003 Aluminum Chemical Composition

3003 is an Al-Mn alloy with the following typical composition:

Al: ~98.6%

Mn: 1.0–1.5%

Fe: ≤0.7%

Si: ≤0.6%

Cu: ≤0.2%

3003 aluminum sheet specifications

Thickness: 0.8-3.0m
State: O, H14, H18
Specific length and width can be customized according to the user’s actual production requirements

3003 Aluminum Sheets for Auto Radiator-Source Factory

Henan Mingtai Aluminum Industry Co., Ltd. is a leading aluminum processing manufacturer with a strong R&D team and extensive expertise in scientific research and production. We are committed to delivering high-quality aluminum products with fast delivery and short production cycles, ensuring efficiency without compromising performance.

Backed by a comprehensive service guarantee system, we provide reliable solutions tailored to your needs. For product details, technical specifications, or exclusive offers, please contact us at:

📞 0086 173 2014 0933

Our professional team is ready to assist you with expert advice and customized support.