3004-H38 Aluminum alloy,Aluminum 3004-H38 alloy,E FORU

### **Aluminum 3004-H38 Alloy Product Introduction** **Aluminum 3004-H38** is a strain-hardened aluminum-manganese-magnesium alloy in the full-hard temper condition, representing the highest strength level achievable in the 3004 alloy series through cold working. This temper offers maximum strength and hardness while maintaining good corrosion resistance, making it suitable for applications where superior mechanical properties are paramount. --- #### **1. Chemical Composition** | Element | Content (%) | | :--- | :--- | | **Manganese (Mn)** | 1.0 - 1.5 | | **Magnesium (Mg)** | 0.8 - 1.3 | | **Iron (Fe)** | 0.7 max | | **Silicon (Si)** | 0.30 max | | **Copper (Cu)** | 0.25 max | | **Zinc (Zn)** | 0.25 max | | **Other Elements** | each 0.05 max, total 0.15 max | | **Aluminum (Al)** | Balance | *Alloy Characteristics:* - **Manganese and Magnesium** combine to provide maximum solid solution strengthening - Optimized chemistry for ultimate strain hardening response - Balanced for highest strength while maintaining essential aluminum characteristics --- #### **2. Physical Properties** | Property | Value / Description | | :--- | :--- | | **Density** | 2.72 g/cm³ (0.098 lb/in³) | | **Melting Range** | 630 - 650 °C (1166 - 1202 °F) | | **Modulus of Elasticity** | 70 GPa (10,150 ksi) | | **Thermal Conductivity** | 119 W/m·K (83 BTU·in/hr·ft²·°F) | | **Electrical Conductivity** | 33% IACS | | **Coefficient of Thermal Expansion** | 23.5 × 10⁻⁶/°C (20-100°C) | | **Specific Heat Capacity** | 890 J/kg·K | --- #### **3. Mechanical Properties** The H38 temper provides full-hard characteristics with maximum strength: * **Tensile Ultimate Strength:** 240 - 280 MPa (35 - 41 ksi) * **Tensile Yield Strength (0.2% Offset):** 220 - 260 MPa (32 - 38 ksi) * **Elongation:** 2 - 4% (in 2 inches) * **Shear Strength:** 145 MPa (21 ksi) * **Fatigue Strength:** 95 MPa (14 ksi) * **Brinell Hardness:** 60 - 70 HB * **Bending Characteristics:** Limited bendability with minimum bend radius of 3-4t --- #### **4. International Standards** * **ASTM:** * **ASTM B209** - Aluminum and Aluminum-Alloy Sheet and Plate * **EN:** * **EN 573-3** - Chemical composition and form of products * **EN 485-2** - Mechanical properties * **ISO:** * **ISO 6361-2** - Wrought Aluminum and Aluminum Alloy Sheets, Strips and Plates * **JIS:** **JIS H 4000** - Aluminum and Aluminum Alloy Sheets and Plates --- #### **5. Product Applications** 3004-H38 is used in applications requiring maximum strength: * **Transportation:** - Heavy-duty vehicle structural panels - Truck trailer structural components - Railway car reinforcements - Container structural members * **Construction:** - High-strength architectural panels - Structural building components - Industrial structural applications - Security panels * **Industrial Equipment:** - High-pressure vessel components - Heavy machinery parts - Equipment structural frames - Specialized tooling * **Marine Applications:** - Structural boat components - Marine hardware - Offshore structural parts --- #### **6. Key Advantages** * **Maximum Strength:** Highest mechanical properties in 3004 alloy series * **Superior Hardness:** Excellent surface durability and wear resistance * **High Stiffness:** Outstanding dimensional stability under heavy loads * **Good Corrosion Resistance:** Maintains good corrosion performance * **Excellent Strength-to-Weight Ratio:** Superior load-bearing capability * **Thermal Performance:** Suitable for heat transfer applications * **Cost-Effective:** Economical high-strength aluminum solution --- #### **7. Fabrication Characteristics** * **Welding:** Limited weldability; requires specialized techniques * **Forming:** Restricted to simple bending and minimal forming operations * **Machining:** Challenging machinability; requires specialized tools * **Strain Hardening:** Represents maximum practical cold working level * **Annealing:** 345°C (650°F) for 2-3 hours for complete softening * **Springback:** Significant springback requires compensation in tooling --- #### **8. Corrosion Performance** * **Atmospheric Corrosion:** Good to Excellent * **Marine Environment:** Fair to Good * **Stress Corrosion Cracking:** Good Resistance * **Pitting Resistance:** Fair * **Industrial Atmospheres:** Good Resistance --- #### **9. Technical Specifications** * H38 temper indicates maximum strain hardening * Suitable for service temperatures from -70°C to +125°C * Good resistance to atmospheric corrosion * Limited formability requires careful manufacturing planning * Special handling required to prevent cracking --- #### **10. Quality Assurance** * Consistent chemical composition * Uniform mechanical properties * Strict quality control standards * Traceability and certification available * Compliance with international standards **Conclusion** Aluminum 3004-H38 represents the ultimate in strength achievement for the 3004 alloy system through cold working processes. While offering limited formability compared to lower tempers, it provides maximum mechanical properties for applications where strength and hardness are primary requirements. The alloy maintains good corrosion resistance and offers a cost-effective alternative to more expensive high-strength aluminum alloys. 3004-H38 serves as an economical solution for situations demanding maximum cold-worked strength within the aluminum-manganese-magnesium alloy system, particularly in structural and heavy-duty applications where weight reduction and high strength are critical factors.

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 1671 gallon liquid totes Special package is available on request.