Alclad 3004-H36 Aluminum alloy,Aluminum 3004-H36 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 the good corrosion resistance characteristic of the 3000 series alloys. The H38 condition is specified for applications where superior mechanical properties are paramount and where minimal forming is required after temper designation. --- #### **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 solid solution strengthening - Optimized chemistry for maximum strain hardening response - Balanced for high 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** | 120 W/m·K (83 BTU·in/hr·ft²·°F) | | **Electrical Conductivity** | 34% 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:** 250 - 290 MPa (36 - 42 ksi) * **Tensile Yield Strength (0.2% Offset):** 230 - 270 MPa (33 - 39 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 * **ASTM B210** - Aluminum and Aluminum-Alloy Drawn Seamless Tubes * **ISO:** * **ISO 6361-2** - Wrought Aluminum and Aluminum Alloy Sheets, Strips and Plates * **EN:** * **EN 573-3** - Chemical composition and form of products * **EN 485-2** - Mechanical properties * **JIS:** **JIS H 4000** - Aluminum and Aluminum Alloy Sheets and Plates --- #### **5. Product Applications** 3004-H38 is used in specialized applications requiring maximum strength: * **Transportation:** - Heavy-duty vehicle structural panels - Truck trailer reinforcements - Railway car structural components * **Construction:** - High-strength architectural panels - Structural building components - Heavy-duty roofing systems * **Industrial:** - High-pressure vessel components - Machinery structural parts - Equipment reinforcements * **Marine:** - Structural boat components - Marine hardware * **Consumer Goods:** - High-strength appliance components - Industrial containers --- #### **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:** Maintains adequate heat transfer characteristics * **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. 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 --- #### **9. Corrosion Performance** * **Atmospheric Corrosion:** Good to Excellent * **Marine Environment:** Fair to Good * **Stress Corrosion Cracking:** Good Resistance * **Pitting Resistance:** Fair * **Industrial Atmospheres:** Good Resistance --- #### **10. Special Considerations** * **Material Handling:** Requires careful handling to prevent edge cracking * **Fabrication Planning:** Manufacturing processes must account for limited ductility * **Quality Control:** Enhanced inspection recommended for critical applications * **Application Specific:** Recommended where minimal forming is required --- #### **11. Comparison with Other Tempers** * Approximately 15-20% stronger than H34 temper * Significant reduction in elongation compared to H34 * Maintains same corrosion resistance as other 3004 tempers * Higher residual stresses may require stress relief for some applications **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 1663 gallon liquid totes Special package is available on request.