5149 Aluminum alloy,Aluminum 5149 alloy,E FORU

### **5149 Aluminum Alloy Product Introduction** **Overview** 5149 Aluminum Alloy is a high-performance, non-heat-treatable alloy belonging to the Al-Mg series (5xxx series). It is characterized by its **exceptionally high strength** (significantly stronger than standard 5xxx alloys like 5083 or 5086), excellent corrosion resistance, especially in marine environments, and good weldability. This alloy achieves its mechanical properties through solid solution strengthening and strain hardening (H temper), making it a premium choice for demanding structural applications where weight savings, durability, and resistance to stress corrosion cracking are critical. --- ### **1. Chemical Composition** The chemical composition of 5149 Aluminum Alloy is key to its high strength and corrosion resistance. The following table outlines the typical elemental composition by weight percentage (%). | Element | Content (%) | | :--- | :--- | | **Aluminum (Al)** | Balance | | **Magnesium (Mg)** | 5.5 - 6.5 | | **Manganese (Mn)** | 0.10 - 0.50 | | **Silicon (Si)** | ≤ 0.40 | | **Iron (Fe)** | ≤ 0.40 | | **Chromium (Cr)** | 0.05 - 0.25 | | **Zinc (Zn)** | ≤ 0.25 | | **Copper (Cu)** | ≤ 0.15 | | **Titanium (Ti)** | ≤ 0.10 | | **Others (Each)** | ≤ 0.05 | | **Others (Total)** | ≤ 0.15 | *Note: The high Magnesium content is the primary contributor to its strength, while controlled Chromium and Manganese levels enhance grain structure and stress corrosion cracking resistance.* --- ### **2. Physical Properties** The physical properties of 5149 alloy make it suitable for heavy-duty and marine applications. | Property | Value / Description | | :--- | :--- | | **Density** | 2.67 g/cm³ (0.096 lb/in³) | | **Melting Range** | ~ 570 - 640 °C (1058 - 1184 °F) | | **Electrical Conductivity** | Approximately 30-35% IACS (International Annealed Copper Standard) | | **Thermal Conductivity** | 125 - 140 W/m·K | | **Coefficient of Thermal Expansion** | 24.0 x 10⁻⁶/°C (20-100°C) | | **Modulus of Elasticity** | 70 GPa (10,200 ksi) | | **Corrosion Resistance** | Excellent. Superior resistance to marine atmosphere and saltwater corrosion. It also exhibits good resistance to stress corrosion cracking in higher tempers. | --- ### **3. Mechanical Properties (Typical)** Mechanical properties are dependent on the strain-hardened temper condition. | Temper | Tensile Strength (MPa) | Yield Strength (0.2% Offset, MPa) | Elongation (%) | | :--- | :--- | :--- | :--- | | **O (Annealed)** | ~ 280 - 320 | ~ 130 - 170 | ~ 20 - 25 | | **H32 / H112** | ~ 340 - 380 | ~ 260 - 300 | ~ 12 - 16 | | **H34 / H114** | ~ 370 - 410 | ~ 290 - 330 | ~ 10 - 14 | | **H36 / H116** | ~ 390 - 430 | ~ 310 - 350 | ~ 8 - 12 | | **H38 / H118** | ~ 410 - 450 | ~ 330 - 370 | ~ 6 - 10 | *Note: The H11x temper (e.g., H116) is specifically designed for products like plate, offering improved resistance to exfoliation and stress corrosion corrosion.* --- ### **4. Product Applications** Due to its high strength and superb corrosion resistance, 5149 Aluminum Alloy is primarily used in demanding applications: * **Marine & Shipbuilding:** Hull plating, superstructures, decking, and critical components for high-speed vessels, workboats, and naval ships. * **Armored Vehicles:** Military vehicle armor plating, where a blend of lightweight properties and ballistic performance is required. * **Pressure Vessels:** Cryogenic tanks and other pressure-containing structures. * **Transportation:** High-stress components for truck bodies, trailers, and railcars. * **Offshore Structures:** Platforms, walkways, and components exposed to aggressive offshore environments. --- ### **5. International Standards** 5149 Aluminum Alloy is recognized under several key international standards. | Standard | Designation | Notes | | :--- | :--- | :--- | | **ISO** | **AlMg5** (EN 573-3) | The standard European designation for this alloy type. | | **ASTM** | **B928 / B928M** | Standard Specification for High Magnesium Aluminum-Alloy Sheet and Plate for Marine Service. 5149 is often covered under this specification. | | **AA** | **5149** | The Aluminum Association (AA) designation is **5149**. | | **EN** | **EN AW-5149** (AlMg5) | The standard European Norm designation. | | **AMS** | **AMS 4094** | Aerospace Material Specification for 5149 Aluminum Alloy Plate. | --- ### **Summary of Key Advantages** * **Very High Strength:** One of the strongest commercially available non-heat-treatable aluminum alloys. * **Superior Corrosion Resistance:** Excellent performance in marine and industrial atmospheres, with good resistance to stress corrosion cracking. * **Excellent Weldability:** Can be readily welded using conventional methods like MIG and TIG. * **Good Cryogenic Properties:** Strength and toughness increase at sub-zero temperatures. * **Ballistic Performance:** Suitable for armor applications due to its high strength and toughness. For critical applications, especially in marine and defense sectors, 5149 Aluminum Alloy represents a top-tier material solution. Please consult with our technical team to select the appropriate temper and product form for your specific 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 1841 gallon liquid totes Special package is available on request.