4343 brazing aluminum foil strip coil
4343 brazing aluminum foil strip coil is widely used in the brazing field, with a melting point between 590-610°C. Compared to other aluminum alloys, such as 4043 aluminum alloy, it has a higher silicon content.
The 4343 brazing aluminum foil strip coil is primarily used as a cladding layer in composite brazing plates, playing a crucial role during the brazing process. It is suitable for connecting composite tubes, composite plates, and composite fins, providing a reliable connection and making it an important choice for efficient brazing materials.
4343 aluminum is a 4000-series aluminum alloy. The main alloying addition is silicon. Cited properties are appropriate for the as-fabricated (no temper or treatment) condition.
AL 4343 is a general purpose filler metal used to join aluminum and aluminum alloys. The solution temperature during heat treatment must be below the solidus of the brazing alloy to ensure that the integrity of the joint is maintained.
Specifications for AL 4343 Alloy
4343 is the Aluminum Association (AA) designation for this material. In European standards, it will be given as EN AW-4343. BAlSi-2 is the AWS designation. Additionally, the EN chemical designation is AlSi7, 5. And the UNS number is A94343.
| Designation Type | Designation |
| Aluminum Association (AA) | 4343 |
| European Standard (EN) | EN AW-4343 |
| AWS (American Welding Society) | BAlSi-2 |
| EN Chemical Designation | AlSi7, 5 |
| UNS (Unified Numbering System) | A94343 |
Features of 4343 Brazing Aluminum Foil Strip Coil
- 1. Low melting point: The lower melting point allows operations to be carried out at reduced temperatures during the brazing process, minimizing thermal impact on the base material and reducing the risk of deformation and damage.
- 2. Narrow solidification range: The narrow solidification range helps improve the fluidity of molten metal during brazing, ensuring uniform shrinkage of the weld during solidification, thereby reducing the formation of cracks.
- 3. Good fluidity: The excellent fluidity characteristic enables the aluminum foil to fill the weld seam better during welding, enhancing the overall strength and reliability of the welded joint.
- 4. Lightweight: Compared to other metal materials, the lightweight nature of 4343 aluminum alloy allows for reduced overall weight in various applications, improving energy efficiency.
- 5. Corrosion resistance: This material exhibits good corrosion resistance in various environments, extending the product's service life.
- 6. Excellent brazing performance: 4343 aluminum alloy is specifically designed for brazing, ensuring the formation of strong bonds during the welding process.
Popular Brazing Aluminum Material 4343 from HC Aluminum
HC Aluminum is a global supplier of 4343 aluminum materials, offering a wide range of specifications for 4343 aluminum.
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4343/3003 Aluminum Sheet Strip
A combination of 4343 and 3003 aluminum alloys, known for good formability and corrosion resistance, suitable for light structural applications.
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4343/3003/4343 Aluminum Clad Brazing Sheet Strip
A brazing sheet with a core of 3003 alloy and 4343 alloy cladding on both sides. It has excellent brazing properties, making it ideal for heat exchangers and refrigeration applications.
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4343/3003/7072 Aluminum Clad Brazing Sheet Strip
A brazing sheet featuring a 3003 core and cladding of 4343 and 7072 alloys. It offers enhanced strength and good brazing characteristics, suitable for demanding automotive and industrial applications.
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4343/3003/4045 Aluminum Clad Brazing Sheet Strip
A brazing sheet with a 3003 core and cladding of 4343 and 4045 alloys. This combination provides excellent brazing performance and corrosion resistance, ideal for heat exchangers and radiators.
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AA 4343/3003mod/4343 Aluminium Fin Strip for Evaporator Condenser
A fin strip made from modified 3003 alloy with 4343 cladding, designed for use in evaporators and condensers. It ensures efficient heat transfer and corrosion resistance in HVAC systems.
4343 brazing aluminum foil strip coil Chemical Composition
| 4343 Chemical Composition(%) | |||||||||
| Si | Fe | Cu | Mn | Mg | Cr | Zn | Ti | Ni | Alu |
| 6.8-8.2 | <0.8 | <0.25 | <0.10 | - | - | <0.20 | - | - | Remainder |
Brazing Material 4343 Aluminum Mechanical Properties
| Property | Value and Unit |
| Elastic (Young's, Tensile) Modulus | 71 GPa (10 x 10⁶ psi) |
| Elongation at Break | 4.4 % |
| Fatigue Strength | 45 MPa (6.5 x 10³ psi) |
| Poisson's Ratio | 0.33 |
| Shear Modulus | 27 GPa (3.9 x 10⁶ psi) |
| Shear Strength | 64 MPa (9.2 x 10³ psi) |
| Tensile Strength: Ultimate (UTS) | 110 MPa (16 x 10³ psi) |
| Tensile Strength: Yield (Proof) | 62 MPa (8.9 x 10³ psi) |
Brazing Material 4343 Aluminum Thermal Properties
| Property | Value and Unit |
| Brazing Temperature | 600 to 620 °C (1110 to 1150 °F) |
| Latent Heat of Fusion | 510 J/g |
| Maximum Temperature: Mechanical | 160 °C (320 °F) |
| Melting Completion (Liquidus) | 620 °C (1140 °F) |
| Melting Onset (Solidus) | 580 °C (1070 °F) |
| Specific Heat Capacity | 900 J/kg-K (0.22 BTU/lb-°F) |
| Thermal Conductivity | 180 W/m-K (100 BTU/h-ft-°F) |
| Thermal Expansion | 22 µm/m-K |
Brazing Material 4343 Aluminum Electrical Properties
| Property | Value and Unit |
| Electrical Conductivity: Equal Volume | 44 % IACS |
| Electrical Conductivity: Equal Weight (Specific) | 150 % IACS |
Applications of 4343 Brazing Aluminum
Automotive Industry
Radiators: 4343 aluminum is used in engine cooling systems to ensure stable vehicle operation at high temperatures.
Air Conditioning Condensers: In automotive air conditioning systems, it effectively dissipates heat, enhancing comfort.
Electronics
Electrical Component Heatsinks: In electronic devices, 4343 aluminum provides efficient heat dissipation solutions to prevent component overheating.
Chemical Industry
Heat Exchangers: During chemical reactions, it maintains ideal reaction temperatures through efficient heat exchange, improving yield.
Diesel Machinery
Evaporators and Heaters: Used in the thermal management systems of diesel engines to ensure efficient operation.
