4043A Aluminum alloy,Aluminum 4043A alloy,E FORU

### **Product Introduction: Aluminum 4043A Alloy** **Overview** Aluminum 4043A Alloy is a widely used aluminum-silicon filler alloy primarily employed in welding applications. As an improved version of standard 4043 alloy, it offers enhanced consistency and performance characteristics. The alloy is particularly valued for its excellent fluidity, low melting point, and good corrosion resistance, making it the preferred choice for welding 6xxx series aluminum alloys and other non-heat-treatable alloys. --- ### **1. Chemical Composition (Typical Weight %)** | Element | Content (%) | |---------|-------------| | **Aluminum (Al)** | Balance | | **Silicon (Si)** | 4.5 - 6.0 | | **Iron (Fe)** | ≤ 0.8 | | **Copper (Cu)** | ≤ 0.30 | | **Manganese (Mn)** | ≤ 0.15 | | **Magnesium (Mg)** | ≤ 0.15 | | **Zinc (Zn)** | ≤ 0.20 | | **Titanium (Ti)** | ≤ 0.15 | | **Others (Each)** | ≤ 0.05 | | **Others (Total)** | ≤ 0.15 | --- ### **2. Physical Properties** | Property | Value / Description | |----------|---------------------| | **Density** | 2.69 g/cm³ | | **Melting Range** | 575 - 630 °C | | **Solidus Temperature** | 575 °C | | **Liquidus Temperature** | 630 °C | | **Electrical Conductivity** | 42-47% IACS | | **Thermal Conductivity** | 160-180 W/m·K | | **Coefficient of Thermal Expansion** | 22.5 × 10⁻⁶/°C | --- ### **3. Mechanical Properties (As-Welded Condition)** | Property | Value Range | |----------|-------------| | **Tensile Strength** | 145-185 MPa | | **Yield Strength (0.2% Offset)** | 75-115 MPa | | **Elongation (in 50mm)** | 12-20% | | **Hardness (Brinell)** | 45-55 HB | --- ### **4. International Standards** | Standard Body | Designation | |---------------|-------------| | **Aluminum Association (AA)** | AA 4043A | | **European Standard (EN)** | EN AW-4043A | | **ISO** | AlSi5 (ISO 18273) | | **UNS** | A94043 | | **AWS** | A5.10 ER4043 | | **DIN** | SG-AlSi5 | --- ### **5. Product Applications** **Welding Applications:** - TIG and MIG welding of aluminum alloys - Repair and maintenance welding - Automotive aluminum welding - Structural aluminum welding - Pipe and tube welding **Base Metal Compatibility:** - 6061, 6063, 6082 series alloys - 3003, 3004, 3005 series alloys - 5052, 5083, 5086 series alloys - Cast aluminum alloys - Wrought aluminum alloys **Industry Applications:** - Automotive industry (body panels, frames) - Shipbuilding and marine structures - Structural engineering - Pipework and pressure vessels - Heat exchanger manufacturing --- ### **6. Key Characteristics & Advantages** - **Excellent Weldability**: Superior welding characteristics with minimal defects - **Good Fluidity**: Excellent flow characteristics during welding - **Reduced Hot Cracking**: Low susceptibility to solidification cracking - **Good Corrosion Resistance**: Comparable to most base metals - **Smooth Bead Appearance**: Produces aesthetically pleasing weld beads - **Low Melting Point**: Easier welding operation control - **Minimal Spatter**: Clean welding process with reduced spatter --- ### **7. Special Features of 4043A Variant** **Quality Enhancements:** - Tighter chemical composition controls - Improved consistency in welding performance - Better wire drawing characteristics - Enhanced surface quality - Reduced porosity in weld metal **Welding Performance:** - Stable arc characteristics - Easy slag removal - Good wetting action - Minimal weld smoke - Consistent deposition rates --- ### **8. Processing and Handling** **Welding Parameters:** - Suitable for both TIG and MIG processes - Optimal gas shielding required (Argon or Argon/Helium mixtures) - Standard welding techniques applicable - Preheating generally not required for thin sections **Storage and Handling:** - Store in dry conditions to prevent oxidation - Use clean, contaminant-free handling procedures - Proper wire feeding systems recommended - Regular equipment maintenance essential **Disclaimer:** The information provided is for reference purposes only. Welding performance may vary depending on specific welding parameters, base metal conditions, and operator technique. Always follow manufacturer recommendations for welding procedures and conduct appropriate testing for critical applications. The 4043A variant offers improved consistency and performance over standard 4043 alloy but should be properly evaluated for specific application requirements.

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 1749 gallon liquid totes Special package is available on request.