3003 H112 4104 Brazing aluminum Plate Description
3003 H112 4104 Brazing aluminum Plate has a tensile strength of 110-145 MPa, a yield strength of ≥40 MPa, an elongation of 12-20%, and a hardness of HV 25-35, which meets the strength requirements of lightweight structural parts.
Suitable for aluminum silicon brazing filler metals (such as 4104 alloy), chemical cleaning or mechanical grinding is required to improve wettability;
Brazing temperature is 550-600℃, and nitrogen protection (purity ≥99.999%) can achieve oxidation-free welding and significantly reduce porosity;
The thermal conductivity of 3003 H112 aluminum plate reaches 210W/(m·K), which is suitable for high-frequency heat conduction scenarios (such as battery cooling systems).
0.2-0.5mm thin plate stamping fins, 3004 H112 Brazing sheet can improve heat exchange efficiency and reduce energy consumption.
Selection recommendations
Preferential H112 state: Compared with H14, it is more suitable for brazing scenarios that require a balance between strength and deformation control; Thickness matching: 0.8-3.0mm plate is recommended to optimize the penetration depth and structural strength of the brazing filler metal; Special needs: Customizable fluoride activation coating (oxide film ≤10nm) to improve welding reliability.
| Item | Specification |
|---|---|
| Core Alloy | 3003 |
| Cladding Alloy | 4104 (Al-Si brazing layer) |
| Temper | H112 |
| Cladding Ratio | 8% – 15% (customizable) |
| Standard Thickness (mm) | 0.6 – 3.0 mm |
| Standard Width (mm) | 500 – 1500 mm |
| Standard Length (mm) | 500 – 8000 mm (or customized) |
| Tensile Strength (MPa) | 130 – 180 MPa |
| Yield Strength (MPa) | ≥ 65 MPa |
| Elongation (%) | ≥ 12% |
| Surface Condition | Clean, bright, free of oil, scratches, and oxidation |
| Cladding Function | 4104 provides excellent brazing performance (melting point approx. 577–582°C) |
| Weldability | Excellent |
| Corrosion Resistance | Good |
| Formability | Good |
| Main Applications | Heat exchangers, automotive radiators, evaporators, condensers, HVAC components |
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