3105-H12 Aluminum alloy,Aluminum 3105-H12 alloy,E FORU

### **Aluminum 3105-H12 Alloy Product Introduction** **Aluminum 3105-H12** is a strain-hardened aluminum-manganese alloy in the quarter-hard temper condition, offering an optimal balance between moderate strength and good formability. This alloy is particularly suitable for applications requiring better mechanical properties than the annealed condition while maintaining adequate workability for various fabrication processes. --- #### **1. Chemical Composition** | Element | Content (%) | | :--- | :--- | | **Manganese (Mn)** | 0.4 - 0.8 | | **Magnesium (Mg)** | 0.4 - 0.8 | | **Iron (Fe)** | 0.5 max | | **Silicon (Si)** | 0.3 max | | **Copper (Cu)** | 0.2 max | | **Zinc (Zn)** | 0.2 max | | **Other Elements** | each 0.05 max, total 0.15 max | | **Aluminum (Al)** | Balance | *Alloy Characteristics:* - **Manganese and Magnesium** provide solid solution strengthening - **Optimized chemistry** for quarter-hard temper characteristics - **Controlled impurity levels** ensure consistent performance - **Balanced composition** for optimal strength-formability ratio --- #### **2. Physical Properties** | Property | Value / Description | | :--- | :--- | | **Density** | 2.72 g/cm³ (0.098 lb/in³) | | **Melting Range** | 640 - 655 °C (1184 - 1211 °F) | | **Modulus of Elasticity** | 69 GPa (10,000 ksi) | | **Thermal Conductivity** | 162 W/m·K (112 BTU·in/hr·ft²·°F) | | **Electrical Conductivity** | 43% IACS | | **Coefficient of Thermal Expansion** | 23.6 × 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 - 170 MPa (19 - 25 ksi) * **Tensile Yield Strength (0.2% Offset):** 100 - 140 MPa (15 - 20 ksi) * **Elongation:** 8 - 12% (in 2 inches) * **Shear Strength:** 85 MPa (12 ksi) * **Fatigue Strength:** 60 MPa (9 ksi) * **Brinell Hardness:** 32 - 42 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 * **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** 3105-H12 is widely used in various applications: * **Building & Construction:** - Roofing and siding sheets - Wall panels and cladding - Gutter systems - Architectural trim components * **Transportation Industry:** - Vehicle interior panels - Truck body components - Container linings - Automotive trim parts * **Consumer Products:** - Appliance cabinets and panels - Furniture components - Lighting fixtures - Household products * **General Manufacturing:** - Electrical enclosures - Storage cabinets - Display panels - Industrial components --- #### **6. Key Advantages** * **Good Strength Properties:** Improved mechanical properties over annealed temper * **Excellent Formability:** Maintains good workability for fabrication processes * **Superior Corrosion Resistance:** Excellent performance in various environments * **Good Weldability:** Compatible with standard welding techniques * **Excellent Surface Quality:** Ideal for painting and decorative finishes * **Cost-Effective:** Economical choice for many applications * **Thermal Conductivity:** Suitable for heat transfer applications --- #### **7. Fabrication Characteristics** * **Welding:** Good weldability using GMAW, GTAW, and resistance welding * **Forming:** Suitable for bending, roll forming, and moderate stamping * **Machining:** Fair machinability; produces discontinuous chips * **Strain Hardening:** Can be further cold worked to achieve higher strength tempers * **Surface Treatment:** Excellent for painting, anodizing, and chemical conversion * **Joining:** Good for mechanical fastening and adhesive bonding --- #### **8. Corrosion Performance** * **Atmospheric Corrosion:** Excellent * **Marine Environment:** Good * **Stress Corrosion Cracking:** Good Resistance * **Pitting Resistance:** Good * **Industrial Atmospheres:** Good Resistance --- #### **9. Technical Specifications** * H12 temper indicates strain hardening to quarter-hard condition * Suitable for service temperatures from -70°C to +150°C * Good stability in various environmental conditions * Consistent mechanical properties throughout material * Good resistance to atmospheric corrosion --- #### **10. Quality Assurance** * Consistent chemical composition * Uniform mechanical properties * Strict quality control standards * Good surface quality and dimensional accuracy * Traceability and certification available **Conclusion** Aluminum 3105-H12 offers an excellent balance of mechanical strength and fabrication characteristics, making it a versatile choice for numerous industrial applications. The quarter-hard temper provides substantial strength improvement over annealed conditions while maintaining good formability for most manufacturing processes. Its combination of good corrosion resistance, excellent surface quality, and reliable mechanical properties ensures consistent performance in architectural, transportation, and consumer goods applications. 3105-H12 represents a cost-effective solution for manufacturers seeking a balanced aluminum alloy that delivers both performance and manufacturability in demanding 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 1705 gallon liquid totes Special package is available on request.