5251-H26 Aluminum alloy,Aluminum 5251-H26 alloy,E FORU

### **5251-H26 Aluminum Alloy Technical Datasheet** **Material Overview** 5251-H26 is a strain-hardened temper variant of the 5251 aluminum-magnesium alloy, offering enhanced strength characteristics while maintaining adequate formability. The H26 temper indicates that the material has been strain-hardened beyond the half-hard condition (H24) but not quite to the full-hard state, then stabilized to ensure property consistency. This temper provides a favorable balance for applications requiring higher mechanical performance while retaining sufficient workability for fabrication processes. --- ### **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 | 32-36% IACS | | Thermal Conductivity | 130 - 140 W/m·K | | Coefficient of Thermal Expansion (20-100°C) | 23.6 × 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 | 250 - 290 MPa | 235 MPa | | Yield Strength (0.2% Offset) | 200 - 240 MPa | 190 MPa | | Elongation (50mm) | 10 - 14% | 8% | | Hardness (Brinell) | 70 - 80 HB | - | | Shear Strength | 150 - 180 MPa | - | | Fatigue Strength | 110 - 130 MPa | - | --- ### **4. Technical Applications** **Primary Application Sectors:** - **Automotive Components** - Structural body reinforcements - Chassis components - Suspension parts - Bracket and mounting systems - **Marine & Offshore** - Hull structural members - Deck support components - Marine hardware - Offshore structural fittings - **Transportation Industry** - Truck frame components - Trailer structural members - Railway structural parts - Container reinforcements - **Industrial Machinery** - Equipment frames - Support structures - Machinery guards - Industrial platforms --- ### **5. International Standards Compliance** | Standard Organization | Designation | |----------------------|-------------| | Aluminum Association | AA 5251-H26 | | ASTM International | ASTM B209-5251 H26 | | European Standards | EN AW-5251A H26 | | Japanese Standards | JIS A5251 H26 | | International Standards | ISO 6361-2 AlMg2Mn0.3 H26 | --- ### **6. Material Characteristics** **Key Advantages:** - Enhanced strength-to-weight ratio - Good structural stability - Maintained corrosion resistance - Adequate formability for structural applications - Good weldability with proper procedures - Consistent mechanical properties **Processing Characteristics:** - **Forming Operations** - Suitable for light to moderate forming - Predictable springback characteristics - Good bending performance with proper radii - Requires controlled forming parameters - **Joining Technology** - Good weldability using standard methods - Recommended filler alloys: 5356, 5183 - Suitable for mechanical fastening - Good adhesive bonding characteristics - **Surface Treatment** - Good painting adhesion - Suitable for chemical conversion coatings - Consistent surface quality - Accepts various surface finishes --- ### **7. Quality Assurance** **Testing & Certification:** - Mechanical property verification - Chemical composition analysis - Surface quality inspection - Formability assessment - Corrosion resistance testing - Mill test certificates per EN 10204 3.1 --- ### **8. Special Considerations** **Manufacturing Guidelines:** - Suitable for structural applications - Requires proper tooling design - Good consistency in production - Compatible with standard manufacturing processes **Design Recommendations:** - Ideal for components requiring higher strength - Suitable for structural applications in corrosive environments - Excellent for weight-sensitive designs - Recommended when enhanced mechanical properties are needed --- **Technical Note:** 5251-H26 Aluminum Alloy provides an excellent combination of enhanced mechanical properties and adequate manufacturability, making it suitable for structural applications requiring higher strength than H24 temper. The stabilized H26 condition ensures reliable performance in various industrial applications, particularly in automotive, marine, and transportation sectors where both structural integrity and corrosion resistance 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 1871 gallon liquid totes Special package is available on request.