5383-H321/H116 Aluminum alloy,Aluminum 5383-H321/H116 alloy,E FORU

# 5383-H321/H116 Aluminum Alloy Technical Datasheet ## Material Overview 5383-H321/H116 is a high-strength, strain-hardened aluminum-magnesium alloy supplied in specialized tempers designed for marine and offshore applications. The H321 temper indicates stabilization by controlled stretching after strain hardening, while H116 denotes a specific temper for improved corrosion resistance in marine environments. This combination provides exceptional strength, weldability, and corrosion resistance for demanding structural applications. --- ## 1. Chemical Composition (Weight %) | Element | Composition Range | |---------|-------------------| | Aluminum (Al) | Balance | | Magnesium (Mg) | 4.0 - 5.2 | | Manganese (Mn) | 0.70 - 1.20 | | Chromium (Cr) | 0.05 - 0.25 | | Iron (Fe) | ≤ 0.25 | | Silicon (Si) | ≤ 0.25 | | Copper (Cu) | ≤ 0.05 | | Zinc (Zn) | ≤ 0.20 | | Zirconium (Zr) | 0.05 - 0.15 | | Titanium (Ti) | ≤ 0.10 | | Other Elements (Each) | ≤ 0.05 | | Other Elements (Total) | ≤ 0.15 | --- ## 2. Physical Properties | Property | Value | |----------|-------| | Density | 2.66 g/cm³ | | Melting Range | 575 - 640 °C | | Electrical Conductivity | 28-32% IACS | | Thermal Conductivity | 115 - 125 W/m·K | | Coefficient of Thermal Expansion (20-100°C) | 24.0 × 10⁻⁶/°C | | Modulus of Elasticity | 70 GPa | | Specific Heat Capacity | 900 J/kg·K | --- ## 3. Mechanical Properties | Property | H321 Temper | H116 Temper | |----------|-------------|-------------| | Tensile Strength (MPa) | 340 - 390 | 330 - 380 | | Yield Strength (MPa) | 240 - 290 | 230 - 280 | | Elongation (%) | 12 - 16 | 14 - 18 | | Hardness (Brinell) | 90 - 100 | 85 - 95 | | Shear Strength (MPa) | 190 - 220 | 185 - 215 | | Fatigue Strength (MPa) | 140 - 160 | 135 - 155 | --- ## 4. Technical Applications ### Primary Application Sectors: - **Marine & Offshore Structures** - Ship hull plating - Offshore platform components - Deck structures - Marine pressure hulls - **Naval Architecture** - Naval vessel structures - Submarine components - Military marine equipment - Patrol boat construction - **Cryogenic Applications** - LNG carrier tanks - Cryogenic storage vessels - Low-temperature containers - Industrial gas storage - **Heavy Transportation** - Truck trailer bodies - Heavy vehicle components - Railway structural members - Special transport equipment --- ## 5. International Standards Compliance | Standard Organization | Designation | |----------------------|-------------| | Aluminum Association | AA 5383-H321/H116 | | ASTM International | ASTM B928/B928M | | European Standards | EN AW-5383 H321/H116 | | International Standards | ISO 6361-2 | | Naval Standards | MIL-DTL-46027 | --- ## 6. Material Characteristics ### Key Advantages: - Excellent combination of high strength and toughness - Superior corrosion resistance in marine environments - Enhanced resistance to stress corrosion cracking - Good weldability with minimal strength loss - Excellent fatigue performance - Suitable for cryogenic service conditions ### Special Features: - **H116 Temper Specifics** - Improved exfoliation corrosion resistance - Enhanced performance in saltwater immersion - Better resistance to marine atmospheric corrosion - Suitable for prolonged marine exposure - **H321 Temper Specifics** - Controlled stretching for stress relief - Improved dimensional stability - Better flatness characteristics - Reduced residual stresses --- ## 7. Processing Characteristics ### Manufacturing Considerations: - **Welding Technology** - Excellent weldability using MIG and TIG processes - Recommended filler metals: ER5183, ER5356 - Minimal strength loss in heat-affected zone - Good weld metal mechanical properties - **Forming Operations** - Moderate formability characteristics - Suitable for cold bending and forming - Requires proper tooling and techniques - Predictable springback behavior - **Machining** - Good machinability with sharp tools - Requires adequate cooling and lubrication - Produces acceptable surface finish - Suitable for precision machining --- ## 8. Quality Assurance ### Testing & Certification: - Mechanical property verification - Chemical composition analysis - Corrosion testing per ASTM G67 and G66 - Ultrasonic testing for internal quality - Dimensional accuracy inspection - Mill test certificates per EN 10204 3.2 ### Special Testing Requirements: - Exfoliation corrosion testing - Stress corrosion cracking evaluation - Fracture toughness testing - Weld procedure qualification --- ## Technical Note 5383-H321/H116 Aluminum Alloy represents a premium marine-grade aluminum solution combining the benefits of strain hardening with specialized thermal-mechanical processing. The H321/H116 tempers provide an optimal balance of high strength, excellent corrosion resistance, and good weldability, making this alloy particularly suitable for critical marine and offshore applications. The controlled stretching in H321 ensures dimensional stability and reduced residual stresses, while the H116 treatment enhances corrosion performance in aggressive marine environments. This combination makes 5383-H321/H116 an ideal choice for naval architecture, offshore structures, and cryogenic applications where reliability, durability, and long-term performance are essential requirements. The alloy's proven performance in demanding service conditions has established it as a preferred material for advanced marine engineering 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 1896 gallon liquid totes Special package is available on request.