5356-O Aluminum alloy,Aluminum 5356-O alloy,E FORU

# 5356-O Aluminum Alloy Technical Datasheet ## Material Overview 5356-O is the annealed temper of the 5356 aluminum-magnesium alloy, primarily used in the form of welding wire and filler metal. In the "O" (annealed) condition, this non-heat-treatable alloy achieves maximum ductility and softness, making it ideal for welding applications where excellent formability and consistent feeding characteristics are required. The annealed condition ensures optimal performance in various welding processes. --- ## 1. Chemical Composition (Weight %) | Element | Composition Range | |---------|-------------------| | Aluminum (Al) | Balance | | Magnesium (Mg) | 4.5 - 5.5 | | Manganese (Mn) | 0.05 - 0.20 | | Chromium (Cr) | 0.05 - 0.20 | | Iron (Fe) | ≤ 0.40 | | Silicon (Si) | ≤ 0.25 | | Copper (Cu) | ≤ 0.10 | | Zinc (Zn) | ≤ 0.10 | | Titanium (Ti) | 0.06 - 0.20 | | Other Elements (Each) | ≤ 0.05 | | Other Elements (Total) | ≤ 0.15 | --- ## 2. Physical Properties | Property | Value | |----------|-------| | Density | 2.64 g/cm³ | | Melting Range | 570 - 635 °C | | Electrical Conductivity | 30-34% IACS | | Thermal Conductivity | 120 - 130 W/m·K | | Coefficient of Thermal Expansion (20-100°C) | 24.1 × 10⁻⁶/°C | | Modulus of Elasticity | 70 GPa | | Specific Heat Capacity | 900 J/kg·K | --- ## 3. Mechanical Properties | Property | Typical Value | |----------|---------------| | Tensile Strength | 240 - 290 MPa | | Yield Strength (0.2% Offset) | 110 - 150 MPa | | Elongation (50mm) | 20 - 25% | | Hardness (Brinell) | 60 - 70 HB | | Shear Strength | 150 - 180 MPa | --- ## 4. Technical Applications ### Primary Application Sectors: - **Welding Filler Metal** - MIG welding wire - TIG welding rod - Plasma arc welding consumables - Automated welding wire - **Marine Welding** - Ship building and repair - Offshore structure fabrication - Marine component welding - Boat building applications - **Structural Welding** - Bridge construction - Building structure fabrication - Structural frame welding - Architectural welding - **Automotive Welding** - Vehicle frame assembly - Body structure welding - Chassis component joining - Automotive repair --- ## 5. International Standards Compliance | Standard Organization | Designation | |----------------------|-------------| | American Welding Society | AWS A5.10: ER5356-O | | ISO Standards | ISO 18273: S Al 5356 | | European Standards | EN ISO 18273: S Al 5356 | | ASTM International | ASTM B211-5356 O | | Japanese Standards | JIS Z 3232: BA 5356 | --- ## 6. Material Characteristics ### Key Advantages: - Maximum ductility and softness - Excellent feeding characteristics in welding - Consistent arc performance - Good weld metal fluidity - Minimal welding defects - Superior formability ### Special Features: - **Welding Performance** - Smooth wire feeding - Stable arc characteristics - Excellent bead appearance - Good wetting action - Minimal spatter - **Mechanical Properties** - High ductility in annealed condition - Good tensile strength for filler metal - Adequate yield strength - Consistent mechanical properties --- ## 7. Processing Characteristics ### Manufacturing Considerations: - **Wire Production** - Excellent drawability in annealed condition - Consistent diameter control - Good surface finish - Uniform mechanical properties - **Welding Applications** - Gas Metal Arc Welding (GMAW/MIG) - Gas Tungsten Arc Welding (GTAW/TIG) - Suitable for all welding positions - Good for automated welding systems - **Storage and Handling** - Moisture-resistant packaging - Recommended storage in dry conditions - Proper handling to prevent contamination - Shelf life: 2 years in original packaging --- ## 8. Quality Assurance ### Testing & Certification: - Chemical composition verification - Mechanical property testing - Wire diameter and ovality inspection - Surface quality assessment - Spooling quality inspection - Certification to AWS and ISO standards ### Quality Features: - Consistent wire diameter (±0.05 mm) - Clean, smooth surface finish - Uniform mechanical properties - Reliable feeding performance - Minimal surface imperfections --- ## Technical Note 5356-O Aluminum Alloy in the annealed condition provides optimal characteristics for welding wire and filler metal applications. The full annealing process ensures maximum ductility and softness, which translates to excellent feeding performance in automated welding systems and consistent arc characteristics in manual welding operations. This temper is particularly valuable for high-quality welding applications where reliable performance and consistent results are essential. The alloy maintains good strength characteristics while offering the formability and handling properties required for premium welding consumables, making it the preferred choice for critical welding applications across marine, structural, and automotive industries.

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 1894 gallon liquid totes Special package is available on request.