4043-H18 Aluminum alloy,Aluminum 4043-H18 alloy,E FORU

### **Product Introduction: Aluminum 4043-H18 Alloy** **Overview** Aluminum 4043-H18 Alloy is a strain-hardened aluminum-silicon alloy in the H18 temper condition, representing a full-hard state achieved through extensive cold working. This temper provides maximum strength and stiffness while maintaining the essential welding characteristics of the 4043 alloy. The H18 condition is specifically designed for demanding automated welding applications where superior wire feeding performance and minimal deformation are critical requirements. --- ### **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** | 35-40% IACS | | **Thermal Conductivity** | 145-165 W/m·K | | **Coefficient of Thermal Expansion** | 22.5 × 10⁻⁶/°C | | **Modulus of Elasticity** | 71 GPa | --- ### **3. Mechanical Properties (H18 Temper Condition)** | Property | Value Range | |----------|-------------| | **Tensile Strength** | 190-230 MPa | | **Yield Strength (0.2% Offset)** | 170-210 MPa | | **Elongation (in 50mm)** | 2-5% | | **Hardness (Brinell)** | 55-70 HB | | **Shear Strength** | 120-150 MPa | | **Fatigue Strength** | 90-110 MPa | --- ### **4. International Standards** | Standard Body | Designation | |---------------|-------------| | **Aluminum Association (AA)** | AA 4043-H18 | | **European Standard (EN)** | EN AW-4043-H18 | | **ISO** | AlSi5 H18 (ISO 18273) | | **UNS** | A94043 | | **AWS** | A5.10 ER4043 | | **ASTM** | B211 | --- ### **5. Product Applications** **High-Performance Automated Welding:** - Robotic welding cells in automotive industry - High-speed manufacturing lines - Automated pipe welding systems - Mass production facilities - Precision welding applications **Demanding Industrial Applications:** - Structural steel fabrication with long wire feeds - Shipbuilding automation - Pressure vessel production lines - Bridge construction automation - Heavy machinery manufacturing **Specialized Applications:** - Extreme long-distance wire feeding (15+ meters) - High-vibration environments - Critical structural welding applications - Aerospace component fabrication - Nuclear industry welding --- ### **6. Key Characteristics & Advantages** - **Maximum Wire Stiffness**: Superior resistance to bending and buckling - **Highest Strength**: Optimal mechanical properties among 4043 tempers - **Excellent Feedability**: Flawless performance in challenging feeding scenarios - **Minimal Deformation**: Maintains shape and straightness under stress - **Stable Arc Characteristics**: Consistent welding performance - **Reduced Downtime**: Minimal bird-nesting and feeding issues - **High Quality Welds**: Produces reliable, defect-free welds --- ### **7. H18 Temper Specific Features** **Mechanical Performance:** - Full-hard condition with maximum strength - Exceptional resistance to permanent set - Superior spring characteristics - Excellent wire straightness retention - Consistent mechanical properties **Welding Performance Advantages:** - Optimal for push-only feeding systems - Excellent performance in curved conduits - Reduced feeding force requirements - Stable electrical conductivity - Consistent deposition rates --- ### **8. Processing and Handling Guidelines** **Welding Parameters:** - Primarily designed for MIG welding processes - Suitable for high-current applications - Recommended shielding gas: Argon or Argon/Helium mixtures - Optimal for automated and robotic systems **Equipment Compatibility:** - Requires heavy-duty feeding systems - Compatible with long conduit setups - Suitable for high-production environments - Works with standard welding power sources **Storage and Handling:** - Maintain original packaging integrity - Store in controlled humidity environments - Avoid mechanical damage during transport - Implement first-in-first-out inventory system **Quality Assurance:** - Regular wire feeding performance checks - Monitor for surface contamination - Verify wire spool integrity - Conduct periodic weld quality tests **Disclaimer:** The information provided is for reference purposes only. The H18 temper offers the highest strength and best feeding characteristics for demanding welding applications. While maintaining good weld quality, users should conduct thorough testing for specific applications and adhere to manufacturer recommendations for equipment setup and welding parameters. Performance may vary based on specific equipment configurations and 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 1752 gallon liquid totes Special package is available on request.