5454-H111; 5454-H311 Aluminum alloy,Aluminum 5454-H111; 5454-H311 alloy,E FORU

# 5454-H111 / 5454-H311 Aluminum Alloy Technical Datasheet ## Material Overview 5454-H111 and 5454-H311 are strain-hardened tempers of the 5454 aluminum-magnesium alloy, designed for applications requiring good strength and excellent corrosion resistance. The H111 temper indicates strain hardening followed by partial annealing, while H311 denotes strain hardening with additional stabilization. Both tempers offer optimal balance between mechanical properties and formability for structural applications in corrosive environments. --- ## 1. Chemical Composition (Weight %) | Element | Composition Range | |---------|-------------------| | Aluminum (Al) | Balance | | Magnesium (Mg) | 2.4 - 3.0 | | Manganese (Mn) | 0.50 - 1.0 | | Chromium (Cr) | 0.05 - 0.20 | | Iron (Fe) | ≤ 0.40 | | Silicon (Si) | ≤ 0.25 | | Copper (Cu) | ≤ 0.10 | | Zinc (Zn) | ≤ 0.25 | | Titanium (Ti) | ≤ 0.20 | | Other Elements (Each) | ≤ 0.05 | | Other Elements (Total) | ≤ 0.15 | --- ## 2. Physical Properties | Property | Value | |----------|-------| | Density | 2.69 g/cm³ | | Melting Range | 600 - 645 °C | | Electrical Conductivity | 31-35% IACS | | Thermal Conductivity | 125 - 135 W/m·K | | Coefficient of Thermal Expansion (20-100°C) | 23.8 × 10⁻⁶/°C | | Modulus of Elasticity | 70 GPa | | Specific Heat Capacity | 900 J/kg·K | --- ## 3. Mechanical Properties | Property | 5454-H111 | 5454-H311 | |----------|-----------|-----------| | Tensile Strength (MPa) | 220 - 270 | 240 - 290 | | Yield Strength (MPa) | 120 - 160 | 140 - 180 | | Elongation (%) | 14 - 18 | 12 - 16 | | Hardness (Brinell) | 65 - 75 | 70 - 80 | | Shear Strength (MPa) | 140 - 170 | 150 - 180 | | Fatigue Strength (MPa) | 110 - 130 | 115 - 135 | --- ## 4. Technical Applications ### 5454-H111 Applications: - Marine structural components - Pressure vessel parts - Automotive body panels - General engineering structures - Storage tank components ### 5454-H311 Applications: - Offshore platform structures - Ship building components - Heavy transportation equipment - Structural reinforcements - Industrial machinery parts --- ## 5. International Standards Compliance | Standard Organization | Designation | |----------------------|-------------| | Aluminum Association | AA 5454-H111/H311 | | ASTM International | ASTM B209-5454 | | European Standards | EN AW-5454 H111/H311 | | Japanese Standards | JIS A5454 H111/H311 | | International Standards | ISO 6361-2 | --- ## 6. Material Characteristics ### Common Advantages: - Excellent corrosion resistance in marine environments - Good stress corrosion cracking resistance - Superior weldability - Good formability and bendability - Moderate strength with good toughness - Suitable for welded structures ### Temper-Specific Features: **5454-H111:** - Better formability for complex shapes - Improved surface quality - Suitable for moderate forming operations - Good for stamped and drawn components **5454-H311:** - Enhanced mechanical properties - Better dimensional stability - Improved flatness characteristics - Suitable for structural applications --- ## 7. Processing Characteristics ### Manufacturing Considerations: - **Forming Operations** - H111: Good for bending and moderate drawing - H311: Suitable for light to medium forming - Both tempers exhibit predictable springback - Good for press brake forming operations - **Welding Technology** - Excellent weldability using MIG and TIG processes - Recommended filler metals: ER5356, ER5183 - Minimal strength loss in heat-affected zone - Good weld metal mechanical properties - **Machining** - Good machinability with sharp tools - Requires adequate cooling and lubrication - Produces acceptable surface finish - Suitable for most machining operations --- ## 8. Quality Assurance ### Testing & Certification: - Mechanical property verification - Chemical composition analysis - Corrosion resistance testing - Surface quality inspection - Dimensional accuracy checking - Mill test certificates per EN 10204 3.1 ### Special Requirements: - Stress corrosion cracking evaluation - Welding procedure qualification - Non-destructive testing capability - Batch traceability maintenance --- ## Technical Note 5454-H111 and 5454-H311 Aluminum Alloys provide versatile solutions for applications requiring a balance of moderate strength, excellent corrosion resistance, and good manufacturability. The H111 temper offers enhanced formability for complex fabrications, while the H311 temper provides improved mechanical properties for structural applications. Both tempers maintain the excellent marine corrosion resistance characteristic of the 5454 alloy system, making them particularly valuable for shipbuilding, offshore structures, and chemical processing equipment. Their combination of good weldability, adequate strength, and superior corrosion performance establishes these materials as reliable choices for engineers designing components for service in aggressive environments where long-term durability and maintenance of structural integrity are essential requirements.

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 1900 gallon liquid totes Special package is available on request.