3003-H112 Aluminum alloy,Aluminum 3003-H112 alloy,E FORU

### **Aluminum 3003-H112 Alloy Product Introduction** **Aluminum 3003-H112** is a widely used manganese-based aluminum alloy in the strain-hardened temper, offering a balanced combination of moderate strength, good corrosion resistance, and excellent formability. The H112 temper indicates a slight strain hardening during hot working, resulting in mechanical properties between annealed (O) and fully strain-hardened (H1X) conditions. This alloy is particularly valued for its versatility and cost-effectiveness in general engineering applications. --- #### **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 | *Primary Features:* - **Manganese (Mn)** serves as the principal alloying element, providing solid solution strengthening - Low copper content ensures good corrosion resistance - Controlled iron and silicon levels maintain formability and 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 (0.215 BTU/lb·°F) | --- #### **3. Mechanical Properties** The H112 temper provides basic mechanical properties suitable for general applications: * **Tensile Ultimate Strength:** 110 - 145 MPa (16 - 21 ksi) * **Tensile Yield Strength (0.2% Offset):** 55 - 95 MPa (8 - 14 ksi) * **Elongation:** 10 - 18% (in 2 inches) * **Shear Strength:** 85 MPa (12 ksi) * **Fatigue Strength:** 60 MPa (9 ksi) * **Brinell Hardness:** 30 - 40 HB * **Bending Characteristics:** Good bendability with minimum bend radius of 1-2t (t = thickness) --- #### **4. International Standards** * **ASTM:** * **ASTM B209** - Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate * **ASTM B221** - Standard Specification for Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes * **ISO:** * **ISO 6361-2** - Wrought Aluminum and Aluminum Alloy Sheets, Strips and Plates * **ISO 6362-2** - Wrought Aluminum and Aluminum Alloy 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-H112 is utilized across multiple industries for various applications: * **General Engineering:** Storage tanks, pressure vessels, and structural components * **Transportation:** Truck and trailer parts, railway freight car bodies * **Construction:** Roofing, siding, and architectural applications * **Heat Exchangers:** Heat transfer equipment and cooling systems * **Food Industry:** Cooking utensils, food processing equipment, and storage containers * **Chemical Industry:** Chemical equipment and processing vessels * **Marine Applications:** Boat hulls and marine components --- #### **6. Key Advantages** * **Good Corrosion Resistance:** Excellent resistance to atmospheric corrosion and industrial environments * **Moderate Strength:** Suitable for structural applications requiring light to moderate loading * **Excellent Formability:** Can be readily formed, bent, and fabricated * **Good Weldability:** Compatible with all common welding methods (GTAW, GMAW, RW) * **Cost-Effective:** Economical choice for general-purpose applications * **Machinability:** Fair machinability in strain-hardened condition * **Brazeability:** Good for brazing applications --- #### **7. Fabrication Characteristics** * **Welding:** Excellent weldability using standard aluminum welding techniques * **Forming:** Good formability for bending and moderate forming operations * **Machining:** Fair machinability; use sharp tools and proper cutting fluids * **Annealing:** 345°C (650°F) for 2-3 hours for complete softening * **Strain Hardening:** Can be further cold worked to achieve higher strength tempers --- #### **8. Technical Notes** * H112 temper is typically applied to products hot-worked without subsequent cold working * Suitable for service temperatures from -70°C to +150°C (-94°F to +302°F) * Exhibits good resistance to marine atmosphere and industrial chemicals * Can be anodized to improve surface hardness and corrosion resistance * Compatible with most chemical conversion coatings and paint systems --- #### **9. Corrosion Resistance** * **Atmospheric:** Excellent * **Marine:** Good to Very Good * **Stress Corrosion Cracking:** Excellent * **Pitting Resistance:** Good * **Intergranular Corrosion:** Good **Conclusion** Aluminum 3003-H112 represents a versatile and economical choice in the aluminum-manganese alloy system, offering a practical balance of moderate strength, good corrosion resistance, and excellent fabricability. Its H112 temper condition makes it particularly suitable for hot-worked products requiring consistent mechanical properties without additional cold working. The alloy's combination of performance characteristics and cost-effectiveness ensures its continued popularity across numerous industrial sectors, from general engineering and transportation to construction and chemical 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 1652 gallon liquid totes Special package is available on request.