5251-H22 Aluminum alloy,Aluminum 5251-H22 alloy,E FORU

### **5251-H22 Aluminum Alloy Technical Datasheet** **Material Overview** 5251-H22 is a strain-hardened temper variant of the 5251 aluminum-magnesium alloy, offering a unique combination of moderate strength and good formability. The H22 temper indicates that the material has been strain-hardened and then partially annealed to achieve a quarter-hard strength level with improved ductility. This temper provides an excellent balance between strength and workability, making it suitable for applications requiring both structural integrity and formability. --- ### **1. Chemical Composition (Weight %)** | Element | Composition Range | |---------|-------------------| | Aluminum (Al) | Balance | | Magnesium (Mg) | 1.7 - 2.4 | | Manganese (Mn) | 0.10 - 0.40 | | Silicon (Si) | ≤ 0.30 | | Iron (Fe) | ≤ 0.40 | | Chromium (Cr) | 0.10 - 0.30 | | Copper (Cu) | ≤ 0.10 | | Zinc (Zn) | ≤ 0.20 | | Titanium (Ti) | ≤ 0.10 | | Other Elements (Each) | ≤ 0.05 | | Other Elements (Total) | ≤ 0.15 | --- ### **2. Physical Properties** | Property | Value | |----------|-------| | Density | 2.69 g/cm³ | | Melting Range | 610 - 650 °C | | Electrical Conductivity | 34-38% IACS | | Thermal Conductivity | 135 - 145 W/m·K | | Coefficient of Thermal Expansion (20-100°C) | 23.7 × 10⁻⁶/°C | | Modulus of Elasticity | 70 GPa | | Specific Heat Capacity | 900 J/kg·K | --- ### **3. Mechanical Properties** | Property | Typical Value | Standard Minimum | |----------|---------------|------------------| | Tensile Strength | 210 - 250 MPa | 195 MPa | | Yield Strength (0.2% Offset) | 160 - 200 MPa | 150 MPa | | Elongation (50mm) | 14 - 18% | 12% | | Hardness (Brinell) | 60 - 70 HB | - | | Shear Strength | 130 - 160 MPa | - | | Fatigue Strength | 100 - 120 MPa | - | --- ### **4. Technical Applications** **Primary Application Sectors:** - **Automotive Components** - Body panels - Structural reinforcements - Interior trim parts - Bracket components - **Marine Applications** - Boat hull components - Marine fittings - Deck equipment - Superstructure parts - **General Engineering** - Light structural frames - Machinery components - Equipment housings - Fabricated parts - **Consumer Products** - Appliance components - Furniture frames - Recreational equipment - Electronic enclosures --- ### **5. International Standards Compliance** | Standard Organization | Designation | |----------------------|-------------| | Aluminum Association | AA 5251-H22 | | ASTM International | ASTM B209-5251 H22 | | European Standards | EN AW-5251A H22 | | Japanese Standards | JIS A5251 H22 | | International Standards | ISO 6361-2 AlMg2Mn0.3 H22 | --- ### **6. Material Characteristics** **Key Advantages:** - Good strength-to-weight ratio - Improved formability compared to full-hard tempers - Good corrosion resistance - Excellent weldability - Consistent mechanical properties - Suitable for moderate forming operations **Processing Characteristics:** - **Forming Operations** - Good bendability and formability - Suitable for moderate drawing operations - Predictable springback characteristics - Adequate for most stamping applications - **Joining Technology** - Excellent weldability (MIG, TIG, spot welding) - Recommended filler alloys: 5356, 5183 - Good adhesive bonding characteristics - Suitable for mechanical fastening - **Surface Treatment** - Good painting and coating adhesion - Suitable for anodizing - Accepts chemical conversion coatings - Consistent surface finish quality --- ### **7. Quality Assurance** **Testing & Certification:** - Mechanical property verification - Chemical composition analysis - Surface quality inspection - Formability assessment - Corrosion resistance testing - Mill test certificates according to EN 10204 3.1 --- ### **8. Special Considerations** **Manufacturing Guidelines:** - Suitable for medium production volumes - Requires standard tooling and equipment - Good consistency in manufacturing processes - Compatible with automated production lines **Design Considerations:** - Ideal for components requiring moderate strength with good formability - Suitable for marine and corrosive environments - Excellent for weight-sensitive applications - Preferred when balance of strength and formability is required --- **Technical Note:** 5251-H22 Aluminum Alloy provides an optimal balance of mechanical properties and manufacturability, making it a versatile choice for applications requiring moderate strength combined with good formability and corrosion resistance. The H22 temper ensures consistent performance in various manufacturing processes and service conditions, offering manufacturers a reliable material solution for a wide range of industrial applications.

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 1869 gallon liquid totes Special package is available on request.