4143 Aluminum alloy,Aluminum 4143 alloy,E FORU

### **Product Introduction: Aluminum 4143 Alloy** **Overview** Aluminum 4143 Alloy is a specialized aluminum-silicon welding filler metal specifically designed for welding heat-treatable aluminum alloys. With its balanced silicon content, this alloy provides excellent weldability, reduced cracking susceptibility, and good color match after anodizing, making it particularly suitable for welding 6xxx series aluminum alloys. --- ### **1. Chemical Composition (Typical Weight %)** | Element | Content (%) | |---------|-------------| | **Aluminum (Al)** | Balance | | **Silicon (Si)** | 3.0 - 5.0 | | **Iron (Fe)** | ≤ 0.8 | | **Copper (Cu)** | ≤ 0.10 | | **Manganese (Mn)** | ≤ 0.15 | | **Magnesium (Mg)** | ≤ 0.15 | | **Zinc (Zn)** | ≤ 0.20 | | **Titanium (Ti)** | ≤ 0.15 | | **Other Elements** | ≤ 0.05 each | | **Total Others** | ≤ 0.15 | --- ### **2. Physical Properties** | Property | Value / Description | |----------|---------------------| | **Density** | 2.70 g/cm³ | | **Melting Range** | 575 - 630 °C | | **Solidus Temperature** | 575 °C | | **Liquidus Temperature** | 630 °C | | **Electrical Conductivity** | 44-49% IACS | | **Thermal Conductivity** | 170-190 W/m·K | | **Coefficient of Thermal Expansion** | 22.8 × 10⁻⁶/°C | | **Modulus of Elasticity** | 71 GPa | --- ### **3. Mechanical Properties (As-Welded Condition)** | Property | Value Range | |----------|-------------| | **Tensile Strength** | 140-180 MPa | | **Yield Strength (0.2% Offset)** | 70-110 MPa | | **Elongation (in 50mm)** | 10-18% | | **Hardness (Brinell)** | 50-65 HB | | **Shear Strength** | 120-150 MPa | --- ### **4. International Standards** | Standard Body | Designation | |---------------|-------------| | **Aluminum Association (AA)** | AA 4143 | | **European Standard (EN)** | EN AW-4143 | | **ISO** | AlSi4 (ISO 18273) | | **UNS** | A94143 | | **AWS** | A5.10 ER4143 | --- ### **5. Product Applications** **Welding Applications:** - TIG and MIG welding of 6xxx series alloys - Automotive frame welding - Structural aluminum welding - Bicycle frame fabrication - Architectural aluminum welding **Base Metal Compatibility:** - 6061, 6063, 6082 alloys - 6005, 6005A alloys - 6101, 6105 alloys - Other heat-treatable aluminum alloys **Industry Applications:** - Automotive industry components - Bicycle and motorcycle frames - Structural engineering applications - Architectural frameworks - Transportation equipment --- ### **6. Key Characteristics & Advantages** - **Reduced Hot Cracking**: Lower silicon content minimizes solidification cracking - **Good Color Match**: Excellent anodizing color match with 6xxx series base metals - **Improved Weldability**: Superior welding characteristics for heat-treatable alloys - **Good Fluidity**: Adequate flow characteristics during welding - **Corrosion Resistance**: Comparable to most base metals - **Post-Weld Heat Treatable**: Can be heat treated after welding - **Smooth Bead Appearance**: Produces aesthetically pleasing weld beads --- ### **7. Special Features** **Welding Performance:** - Stable arc characteristics - Minimal spatter generation - Easy slag removal - Good wetting action - Consistent deposition rates **Metallurgical Properties:** - Controlled silicon content for crack resistance - Compatible microstructure with base metals - Good response to post-weld heat treatment - Minimal porosity in properly made welds --- ### **8. Processing Guidelines** **Welding Parameters:** - Suitable for both TIG and MIG processes - Recommended shielding gas: Argon or Argon/Helium mixtures - Standard welding techniques applicable - Preheating recommended for thick sections **Post-Weld Heat Treatment:** - Solution treatment: 530-550°C - Aging treatment: 160-180°C - Can restore base metal properties in HAZ **Quality Control:** - Visual inspection for surface defects - Dye penetrant testing for critical applications - Radiographic examination when required - Mechanical testing for quality verification **Disclaimer:** The information provided is for reference purposes only. Welding performance may vary depending on specific base metals, joint configurations, and welding parameters. For critical applications, conduct appropriate welding procedure qualifications and consult technical data from material suppliers. The alloy is specifically optimized for welding heat-treatable aluminum alloys, particularly the 6xxx series, and provides excellent results when used with compatible base materials.

Packing of Standard Packing: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 1762 gallon liquid totes Special package is available on request.