3004-H19 Aluminum alloy,Aluminum 3004-H19 alloy,E FORU

### **Aluminum 3004-H19 Alloy Product Introduction** **Aluminum 3004-H19** is an extra-hard temper variant of the aluminum-manganese-magnesium 3004 alloy, representing the ultimate level of strain hardening achievable through cold working processes. The H19 designation indicates a temper condition that exceeds the conventional full-hard H18 state, providing the highest possible strength and hardness in the 3004 alloy series while maintaining essential aluminum characteristics. --- #### **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 - Precise chemical control enables ultimate strain hardening capability - Optimized for ultra-high strength applications while maintaining corrosion resistance --- #### **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** | 118 W/m·K (82 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 H19 temper provides extra-hard characteristics with ultimate strength: * **Tensile Ultimate Strength:** 270 - 310 MPa (39 - 45 ksi) * **Tensile Yield Strength (0.2% Offset):** 250 - 290 MPa (36 - 42 ksi) * **Elongation:** 1 - 3% (in 2 inches) * **Shear Strength:** 155 MPa (22 ksi) * **Fatigue Strength:** 100 MPa (14 ksi) * **Brinell Hardness:** 65 - 75 HB * **Bending Characteristics:** Very limited formability with minimum bend radius of 4-5t --- #### **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-H19 is specified for specialized applications requiring ultimate strength: * **Aerospace Industry:** - Non-structural aircraft components - High-strength brackets and stiffeners - Satellite components * **Transportation:** - Ultra-heavy-duty vehicle structural parts - Specialized trailer components - High-strength railway components * **Industrial Applications:** - Specialized machinery parts - High-wear components - Tooling and fixture applications - High-pressure vessel components * **Electronics:** - High-strength heat sink applications - Rigid electronic enclosures - Server chassis components * **Special Construction:** - High-strength architectural elements - Security panels - Ballistic protection components --- #### **6. Key Advantages** * **Ultimate Strength:** Highest mechanical properties achievable in 3004 series * **Superior Hardness:** Exceptional surface durability and wear resistance * **Maximum Stiffness:** Outstanding dimensional stability under extreme loads * **Good Corrosion Resistance:** Maintains adequate corrosion performance * **Excellent Strength-to-Weight Ratio:** Unmatched load-bearing capability * **Thermal Performance:** Suitable for specialized heat transfer applications * **Cost Alternative:** Economical substitute for more expensive high-strength alloys --- #### **7. Fabrication Characteristics** * **Welding:** Very limited weldability; requires specialized techniques and annealing * **Forming:** Extremely limited formability; suitable only for minimal bending * **Machining:** Difficult machinability; requires specialized tools and techniques * **Strain Hardening:** Represents maximum practical cold working limit * **Annealing:** 345°C (650°F) for 2-3 hours for complete stress relief * **Springback:** Substantial springback requires sophisticated tooling design --- #### **8. Technical Specifications** * H19 temper indicates strain hardening beyond conventional full-hard condition * Suitable for service temperatures from -70°C to +120°C * Good resistance to atmospheric corrosion * Requires special handling to prevent cracking * Not recommended for applications requiring significant forming --- #### **9. Corrosion Performance** * **Atmospheric Corrosion:** Good * **Marine Environment:** Fair to Good * **Stress Corrosion Cracking:** Fair Resistance * **Pitting Resistance:** Fair * **Industrial Atmospheres:** Good Resistance --- #### **10. Special Considerations** * **Material Handling:** Requires extreme care to prevent edge cracking * **Fabrication Planning:** Manufacturing processes must account for very limited ductility * **Quality Control:** Enhanced inspection required for all applications * **Application Specific:** Recommended only for applications where no forming is required * **Stress Relief:** May require stress relief for some critical applications --- #### **11. Comparison with Other Tempers** * Approximately 8-12% stronger than H18 temper * Significant reduction in elongation compared to H18 * Maintains same base corrosion resistance as other 3004 tempers * Higher residual stresses require careful application engineering **Conclusion** Aluminum 3004-H19 represents the absolute pinnacle of strain hardening achievement in the 3004 alloy system, delivering the ultimate strength and hardness characteristics available. While its applications are highly specialized due to extremely limited formability, it provides an economical solution for situations demanding absolute maximum mechanical properties from a non-heat-treatable aluminum alloy. The material is particularly valuable in applications where ultra-high strength and stiffness are paramount, and where subsequent forming operations are nonexistent. 3004-H19 serves as a cost-effective alternative to more expensive high-strength aluminum alloys while maintaining the favorable characteristics of the 3000 series, making it ideal for specialized aerospace, industrial, and high-performance applications.

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 1667 gallon liquid totes Special package is available on request.