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

### **Alclad 3003-H12 Aluminum Alloy Product Introduction** **Alclad 3003-H12** is a composite material that combines the excellent formability and moderate strength of strain-hardened **Aluminum Alloy 3003** in the **H12 temper** with superior corrosion resistance provided by a metallurgically bonded high-purity aluminum cladding. The H12 temper indicates a strain-hardened state to a quarter-hard level, offering a balanced combination of strength and formability. The "Alclad" process provides sacrificial corrosion protection, making this product ideal for applications requiring good mechanical properties, formability, and enhanced durability in corrosive environments. --- #### **1. Chemical Composition** The material consists of a core alloy and protective cladding layers. * **Core Alloy (3003):** | 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 | | **Aluminum (Al)** | Balance | * **Cladding Layer:** Typically AA1050, AA1060, or AA1100 alloy (99.0% min aluminum content), providing sacrificial corrosion protection to the core material. --- #### **2. Physical Properties** | Property | Value / Description | | :--- | :--- | | **Density** | 2.73 g/cm³ | | **Melting Range** | 643 - 654 °C | | **Modulus of Elasticity** | 69 GPa (10,000 ksi) | | **Thermal Conductivity** | 155 W/m·K | | **Electrical Conductivity** | 42% IACS | | **Coefficient of Thermal Expansion** | 23.2 μm/m·°C (20-100°C) | --- #### **3. Mechanical Properties** The H12 temper provides quarter-hard strength characteristics with good formability. * **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 --- #### **4. International Standards** This product conforms to several international standards: * **ASTM:** * **ASTM B209** - Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate * **ASTM B928** - Standard Specification for High Magnesium Aluminum-Alloy Sheet and Plate * **AMS:** **AMS 4003** - Aluminum Alloy 3003, Alclad Sheet and Plate * **ISO:** * **ISO 6361-2** - Wrought Aluminum and Aluminum Alloy Sheets, Strips and Plates * **ISO 209** - Aluminum and Aluminum Alloys - Chemical Composition * **EN:** * **EN 573-3** - Chemical composition and form of products * **EN 485-2** - Mechanical properties --- #### **5. Product Applications** Alclad 3003-H12 is widely used in applications requiring corrosion resistance and moderate strength: * **Aerospace:** Non-structural aircraft components, interior panels, and fairings * **Marine:** Boat hulls, decks, and marine hardware * **Transportation:** Truck and trailer panels, container skins * **Architecture:** Roofing, siding, and architectural trim * **Heat Exchangers:** Fin stock and heat exchanger components * **Food Processing:** Equipment and containers * **Chemical Industry:** Storage tanks and processing equipment --- #### **6. Key Advantages** * **Enhanced Corrosion Resistance:** The Alclad layer provides sacrificial protection, significantly extending service life in corrosive environments * **Excellent Formability:** The H12 temper allows for moderate forming operations including bending and shallow drawing * **Good Strength-to-Weight Ratio:** Offers favorable mechanical properties while maintaining lightweight characteristics * **Superior Surface Finish:** Provides a clean, attractive appearance suitable for visible applications * **Excellent Weldability:** Can be readily welded using common aluminum welding techniques * **Good Thermal Conductivity:** Suitable for heat transfer applications * **Low Maintenance:** The sacrificial cladding reduces maintenance requirements and costs --- #### **7. Fabrication Characteristics** * **Welding:** Excellent weldability using GTAW and GMAW processes * **Forming:** Good formability in H12 temper; suitable for bending and moderate drawing * **Machining:** Fair machinability; produces stringy chips * **Annealing:** 345°C (650°F) for 2-3 hours followed by air cooling **Conclusion** Alclad 3003-H12 represents an optimal balance between mechanical properties, formability, and corrosion resistance. The quarter-hard H12 temper provides sufficient strength for many structural applications while maintaining adequate formability for fabrication. Combined with the protective Alclad coating, this material offers exceptional value for applications where corrosion resistance, moderate strength, and formability are key requirements. Its versatility makes it suitable for aerospace, marine, transportation, and architectural applications where long-term durability and minimal maintenance are essential.

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 1647 gallon liquid totes Special package is available on request.