3003-H12 Aluminum alloy,Aluminum 3003-H12 alloy,E FORU

### **Aluminum 3003-H12 Alloy Product Introduction** **Aluminum 3003-H12** is a strain-hardened aluminum-manganese alloy in the quarter-hard temper condition, offering an optimal balance between strength and formability. As part of the 3000 series aluminum alloys, it provides good corrosion resistance combined with moderate mechanical properties achieved through controlled cold working. The H12 temper makes it particularly suitable for applications requiring better strength than annealed material while maintaining good fabrication characteristics. --- #### **1. Chemical Composition** | Element | Content (%) | | :--- | :--- | | **Manganese (Mn)** | 1.0 - 1.5 | | **Copper (Cu)** | 0.05 - 0.20 | | **Iron (Fe)** | 0.7 max | | **Silicon (Si)** | 0.6 max | | **Zinc (Zn)** | 0.10 max | | **Other Elements** | each 0.05 max, total 0.15 max | | **Aluminum (Al)** | Balance | *Key Characteristics:* - **Manganese (Mn)** provides solid solution strengthening - Low copper content ensures excellent corrosion resistance - Balanced chemistry allows for consistent mechanical properties --- #### **2. Physical Properties** | Property | Value / Description | | :--- | :--- | | **Density** | 2.73 g/cm³ (0.098 lb/in³) | | **Melting Range** | 643 - 654 °C (1190 - 1210 °F) | | **Modulus of Elasticity** | 69 GPa (10,000 ksi) | | **Thermal Conductivity** | 155 W/m·K (107 BTU·in/hr·ft²·°F) | | **Electrical Conductivity** | 42% IACS | | **Coefficient of Thermal Expansion** | 23.2 × 10⁻⁶/°C (20-100°C) | | **Specific Heat Capacity** | 900 J/kg·K | --- #### **3. Mechanical Properties** The H12 temper provides quarter-hard characteristics: * **Tensile Ultimate Strength:** 130 - 160 MPa (19 - 23 ksi) * **Tensile Yield Strength (0.2% Offset):** 115 - 145 MPa (17 - 21 ksi) * **Elongation:** 4 - 10% (in 2 inches) * **Shear Strength:** 95 MPa (14 ksi) * **Fatigue Strength:** 62 MPa (9 ksi) * **Brinell Hardness:** 35 - 45 HB * **Bending Characteristics:** Good bendability with minimum bend radius of 1-2t --- #### **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 * **ISO 6362-2** - Extruded Rod/Bar, Tube and Profiles * **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** 3003-H12 finds applications in various industries: * **HVAC Systems:** Heat exchanger fins, ductwork, and ventilation components * **Transportation:** Vehicle body panels, trailer linings, and structural components * **Construction:** Roofing sheets, siding, and architectural trim * **Food Industry:** Cooking utensils, food containers, and processing equipment * **General Manufacturing:** Storage tanks, chemical equipment, and machinery parts * **Electrical Industry:** Bus bars and electrical enclosures --- #### **6. Key Advantages** * **Balanced Properties:** Optimal strength-formability ratio for versatile applications * **Excellent Corrosion Resistance:** Good performance in various environments * **Good Formability:** Suitable for bending, roll forming, and moderate drawing * **Excellent Weldability:** Compatible with all standard welding methods * **Cost-Effective:** Economical solution for many industrial applications * **Good Thermal Conductivity:** Suitable for heat transfer applications * **Non-Toxic:** Safe for food contact applications --- #### **7. Fabrication Characteristics** * **Welding:** Excellent weldability using GTAW, GMAW, and resistance welding * **Forming:** Good for bending, roll forming, and moderate drawing operations * **Machining:** Fair machinability; produces stringy chips * **Strain Hardening:** Can be further cold worked to achieve H14 or H16 tempers * **Annealing:** 345°C (650°F) for 2-3 hours for complete softening --- #### **8. Technical Specifications** * H12 temper indicates strain hardening to quarter-hard condition * Suitable for service temperatures from -70°C to +150°C * Good resistance to atmospheric and industrial corrosion * Can be anodized for improved surface properties * Compatible with most chemical conversion coatings --- #### **9. Corrosion Performance** * **Atmospheric Corrosion:** Excellent * **Marine Environment:** Good * **Stress Corrosion Cracking:** Excellent Resistance * **Pitting Resistance:** Good * **General Corrosion:** Excellent --- #### **10. Quality Assurance** * Consistent mechanical properties throughout material * Good surface quality and dimensional stability * Reliable performance in various environmental conditions * Traceable material certification available **Conclusion** Aluminum 3003-H12 offers a practical balance of mechanical properties and fabrication characteristics, making it one of the most versatile aluminum alloys for general engineering applications. Its quarter-hard temper provides sufficient strength for many structural applications while maintaining good formability for manufacturing processes. The alloy's excellent corrosion resistance, combined with good weldability and thermal conductivity, ensures its continued popularity across multiple industries including HVAC, transportation, construction, and food processing.

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 1653 gallon liquid totes Special package is available on request.