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

### **Alclad 3003-H112 Aluminum Alloy Product Introduction** **Alclad 3003-H112** is a versatile composite material that combines the core properties of the widely used **Aluminum Alloy 3003** in the **H112 temper** with the superior **corrosion resistance** of a high-purity aluminum cladding. The H112 temper indicates a strain-hardened state achieved during hot forming, resulting in a slight strength increase over the annealed condition. The "Alclad" process metallurgically bonds a thin layer of pure aluminum or a low-alloy aluminum to the core material on both sides, providing a sacrificial layer that protects the core from corrosion. This product is ideal for applications requiring a good balance of strength, formability, and long-term durability in corrosive environments. --- #### **1. Chemical Composition** The composition consists of the core alloy and the cladding layer. * **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 | | **Aluminum (Al)** | Balance | * **Cladding Layer:** Typically made from a 1000-series aluminum (e.g., AA1050, AA1100) or a zinc-free alloy, which is anodic to the 3003 core. This ensures the cladding sacrificially corrodes, protecting the stronger core material. --- #### **2. Physical Properties** | Property | Value / Description | | :--- | :--- | | **Density** | Approximately 2.73 g/cm³ | | **Melting Range** | ~ 640 - 655 °C | | **Modulus of Elasticity** | Approximately 69 GPa (10.0 x 10⁶ psi) | | **Thermal Conductivity** | ~ 150 - 170 W/m·K (at 25°C) | | **Electrical Conductivity** | ~ 40 - 45% IACS | | **Coefficient of Thermal Expansion** | ~ 23.2 x 10⁻⁶ /K | --- #### **3. Mechanical Properties** The H112 temper provides a slight improvement in strength over the O-temper (annealed) due to hot working. Typical mechanical properties for the core material (Alclad 3003-H112) are: * **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) * **Note:** The cladding layer slightly reduces the overall mechanical properties compared to unclad 3003-H112, but the core provides the primary structural strength. --- #### **4. International Standards** This specific product form is covered by various international standards for plate, sheet, and tread plate. * **ASTM:** * **ASTM B209** for Sheet and Plate. * **ASTM B928** for High Magnesium Aluminum-Alloy Sheet and Plate (covers related products and cladding requirements). * **AMS:** **AMS 4003** (Alclad 3003 Alloy, Sheet and Plate) * **ISO:** Not as commonly specified by a single ISO standard, but its properties align with general specifications for aluminum sheet and plate. * **MIL-SPEC:** May be procured to relevant military standards for specific applications. --- #### **5. Product Applications** Alclad 3003-H112 is specified in applications where its inherent corrosion resistance is a key advantage, reducing or eliminating the need for painting or other coatings. * **Marine and Offshore:** **Boat hulls**, decks, superstructures, and components exposed to saltwater atmospheres. * **Transportation:** **Truck and trailer bodies**, **container flooring**, and bulkheads. * **Architecture:** **Tread plate** (diamond plate) for walkways, stair treads, and platforms in corrosive or industrial environments. * **Heat Exchangers:** Tanks and headers where corrosion resistance is critical. * **General Engineering:** Various sheet metal work requiring a durable, corrosion-resistant material in a slightly strengthened state. --- #### **6. Key Advantages** * **Superior Corrosion Resistance:** The Alclad layer provides sacrificial (cathodic) protection, greatly extending the service life of the component, even if the surface is scratched or damaged. * **Good Strength-to-Weight Ratio:** The 3003-H112 core provides a good balance of strength and lightweight properties. * **Excellent Formability:** Can be readily formed, bent, and shaped in the H112 condition, though it is less formable than the fully annealed (O) temper. * **Good Weldability:** Can be welded using common techniques, though the Alclad layer may be diluted in the weld zone. * **Attractive and Low-Maintenance Surface:** The natural aluminum finish is aesthetically pleasing and requires minimal maintenance, especially in environments where painted surfaces would degrade. **Conclusion** **Alclad 3003-H112** is a highly practical and durable engineered material. It successfully bridges the gap between the moderate strength and excellent workability of the 3003 alloy and the demanding requirement for long-term corrosion protection. Its use is a cost-effective strategy for ensuring structural integrity and longevity in harsh environments, making it a trusted choice for marine, transportation, and industrial applications worldwide.

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 1646 gallon liquid totes Special package is available on request.