Automotive Aluminum Radiator Fins - Lightweight & Durable - 3003 Alloy
Classification :
PRODUCT DETAILS
Product Features
1. High-Quality Alloy Composition:
Al-Mn alloy (3003) containing manganese (Mn 1.0-1.5%) enhances strength and corrosion resistance.
Low impurities (Fe ≤ 0.7%, Si ≤ 0.6%) ensure weldability and forming stability.
2. Lightweight Design:
With a density of only 2.73 g/cm³ (60% lighter than copper), it reduces vehicle weight and optimizes fuel efficiency.
3. High Corrosion Resistance:
A naturally formed Al₂O₃ oxide layer on the surface resists corrosion from moisture, antifreeze, and salt spray, making it suitable for long-term use.
4. Highly Efficient Heat Transfer:
With a thermal conductivity of 193 W/(m·K), it quickly dissipates engine heat to prevent overheating.
The wavy/louvered fin design increases heat dissipation area and improves airflow efficiency by over 20%. 🔧 Process Advantages:
Precision stamping, thickness range 0.1-0.3mm (±0.02mm tolerance), ensuring consistency.
Optional hydrophilic coating reduces scale adhesion and extends lifespan.
Chemical properties:
Element | 3003 Aluminum Alloy | Impact on Performance |
Al | Balance | Base material |
Mn | 1.0-1.5% | ↑ Strength & corrosion resistance |
Fe | ≤0.7% | Affects formability |
Si | ≤0.6% | ↓ Ductility if excessive |
Cu | 0.05-0.20% | ↑ Strength |
Others | ≤0.15% (each) | Controlled impurities |
Mechanical properties:
Property | 3003-H14 (Hard Temper) | Test Standard |
Tensile Strength | 145-195 MPa | ASTM B557 / GB/T 228.1 |
Yield Strength | 125-170 MPa | ISO 6892-1 |
Elongation | 8-12% | ASTM E8 |
Hardness (Brinell HB) | 40 HB | ASTM E10 |
Thermal Conductivity | 193 W/(m·K) | ASTM E1461 |
Melting Range | 640-655°C | ASTM E794 |
Applications:
1. Traditional Fuel Vehicle Systems
Applicable Components:
Engine Radiators
The wavy/louvered fin design enhances airflow and heat dissipation efficiency, preventing engine overheating.
Corrosion resistance (500 hours salt spray test) allows for long-term exposure to antifreeze and rain.
Intercoolers
Lightweight (60% lighter than copper) reduces the load on the turbocharger system and improves fuel economy.
AC Condensers
High thermal conductivity (193 W/(m·K)) rapidly cools refrigerant, optimizing air conditioning performance.
Advantages:
Compatible with brazing/epoxy bonding processes, seamlessly bonding to copper or aluminum tubing.
The manganese element in the 3003 alloy enhances corrosion resistance, making it suitable for high-temperature and high-humidity environments.
2. New Energy Vehicle (EV/HEV) Systems
Applied Components:
Battery Cooling Plates
Ultra-thin fins (0.1-0.3mm) directly contact the battery module for uniform temperature distribution.
Optional hydrophilic coating reduces coolant scaling.
Electric Drive System Radiators (EDU Coolers)
Vibration-resistant design (yield strength 125 MPa) to withstand high-frequency motor vibrations.
Advantages:
Meets lightweighting requirements for electric vehicles (weight reduction and increased range).
Non-magnetic, preventing interference with battery management system (BMS) signals.
3. Commercial and Special Vehicles
Applied Components:
Heavy-Duty Truck Radiators
Thickened fins (0.3-0.5mm) meet high-load heat dissipation requirements.
Construction Equipment Cooling Systems
Dust-resistant design (adjustable spacing) adapts to dusty working conditions.
Advantages:
High-pressure washdown resistance for harsh field environments. The cost is 40-50% lower than copper cooling systems.
Customer Praise
Our products have been exported to over 50 countries including Southeast Asia, the Middle East, Africa, Latin America, and Europe for a long time, serving overseas traders, engineering contractors, and large-scale manufacturing factories.
APPLICATION FIELD
High-rise buildings
Offshore drilling
Car squeak
Shipbuilding
Large venues
Mechanical processing
Steel smelting
Tall Buildings
FACTORY WORKSHOP
FAQ
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