Alclad 3004-H38 Aluminum alloy,Aluminum 3004-H38 alloy,E FORU

### **Alclad 3004-H38 Aluminum Alloy Product Introduction** **Alclad 3004-H38** is a high-strength aluminum composite material featuring a 3004 alloy core in the full-hard temper condition with a metallurgically bonded pure aluminum cladding. This product combines the maximum strength achievable in the 3004 alloy series through cold working with superior corrosion resistance provided by the sacrificial Alclad layer. The H38 temper offers ultimate mechanical properties while the cladding ensures long-term durability in corrosive environments. --- #### **1. Chemical Composition** *Core Alloy (3004):* | Element | Content (%) | | :--- | :--- | | **Manganese (Mn)** | 1.0 - 1.5 | | **Magnesium (Mg)** | 0.8 - 1.3 | | **Iron (Fe)** | 0.7 max | | **Silicon (Si)** | 0.30 max | | **Copper (Cu)** | 0.25 max | | **Zinc (Zn)** | 0.25 max | | **Other Elements** | each 0.05 max, total 0.15 max | | **Aluminum (Al)** | Balance | *Cladding Layer:* - High-purity aluminum alloy (AA1050, AA1060, or AA1100 series) - Typically 2.5-5% of total thickness per side - Zinc-free composition for optimal sacrificial corrosion protection --- #### **2. Physical Properties** | Property | Value / Description | | :--- | :--- | | **Density** | 2.72 g/cm³ (0.098 lb/in³) | | **Melting Range** | 630 - 650 °C (1166 - 1202 °F) | | **Modulus of Elasticity** | 70 GPa (10,150 ksi) | | **Thermal Conductivity** | 120 W/m·K (83 BTU·in/hr·ft²·°F) | | **Electrical Conductivity** | 34% IACS | | **Coefficient of Thermal Expansion** | 23.5 × 10⁻⁶/°C (20-100°C) | | **Cladding Thickness** | 2.5-5% per side of total thickness | --- #### **3. Mechanical Properties** The H38 temper provides full-hard characteristics with maximum strength: * **Tensile Ultimate Strength:** 240 - 280 MPa (35 - 41 ksi) * **Tensile Yield Strength (0.2% Offset):** 220 - 260 MPa (32 - 38 ksi) * **Elongation:** 2 - 4% (in 2 inches) * **Shear Strength:** 140 MPa (20 ksi) * **Fatigue Strength:** 90 MPa (13 ksi) * **Brinell Hardness:** 58 - 68 HB * **Bending Characteristics:** Limited bendability with minimum bend radius of 3-4t --- #### **4. 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 4084** - Aluminum Alloy 3004, Alclad 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 --- #### **5. Product Applications** Alclad 3004-H38 is specified for demanding applications requiring maximum strength and corrosion resistance: * **Marine & Offshore:** - High-strength boat hull components - Marine structural members - Offshore platform structural parts - Ship superstructures * **Transportation:** - Heavy-duty truck trailer panels - Railway car structural components - Container structural members - Vehicle reinforcements * **Building & Construction:** - High-strength architectural panels - Structural building components - Heavy-duty roofing systems - Industrial flooring * **Industrial Equipment:** - High-pressure vessel components - Chemical processing equipment - Storage tank structural parts - Machinery structural components --- #### **6. Key Advantages** * **Maximum Strength:** Highest mechanical properties in 3004 alloy series * **Superior Corrosion Protection:** Alclad layer provides sacrificial protection * **Excellent Hardness:** Superior surface durability and wear resistance * **High Stiffness:** Outstanding dimensional stability under heavy loads * **Long Service Life:** Extended durability in corrosive environments * **Low Maintenance:** Reduced need for protective coatings * **Cost-Effective:** Economical high-strength corrosion-resistant solution --- #### **7. Fabrication Characteristics** * **Welding:** Limited weldability; requires specialized techniques * **Forming:** Restricted to simple bending and minimal forming operations * **Machining:** Challenging machinability; requires specialized tools * **Strain Hardening:** Represents maximum practical cold working level * **Annealing:** 345°C (650°F) for 2-3 hours for complete softening * **Surface Treatment:** Good for chemical conversion coatings --- #### **8. Corrosion Performance** * **Atmospheric Corrosion:** Excellent * **Marine Environment:** Very Good to Excellent * **Stress Corrosion Cracking:** Good Resistance * **Pitting Resistance:** Very Good * **Galvanic Protection:** Sacrificial cladding protects against corrosion * **Industrial Chemicals:** Good resistance to industrial atmospheres --- #### **9. Technical Specifications** * H38 temper indicates maximum strain hardening * Suitable for service temperatures from -70°C to +125°C * Cladding ensures continuous corrosion protection * Good stability in various environmental conditions * Maintains strength better than 3003 series alloys --- #### **10. Quality Assurance** * Consistent cladding thickness and bond quality * Uniform mechanical properties throughout * Strict chemical composition control * Full material traceability * Comprehensive certification available **Conclusion** Alclad 3004-H38 represents the ultimate combination of maximum strength and superior corrosion protection in the 3004 alloy series. While offering limited formability due to its full-hard condition, it provides the highest mechanical properties achievable through cold working, combined with the proven durability of Alclad technology. This material is ideally suited for demanding applications in marine, transportation, and industrial sectors where both ultimate strength and long-term corrosion resistance are critical requirements. The product offers excellent value through extended service life, reduced maintenance costs, and reliable performance in the most challenging operating environments.

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 1664 gallon liquid totes Special package is available on request.