Magnesium AZ61A-F，UNS M11610,E FOUR

Magnesium AZ61A-F (UNS M11610) Wrought Alloy Product Introduction** **Product Description:** Magnesium AZ61A-F is a widely used wrought magnesium alloy known for its excellent combination of strength, ductility, and corrosion resistance. Designated under the Unified Numbering System as **UNS M11610**, the "F" temper indicates the material is in the as-fabricated condition, typically through processes like extrusion or rolling. With its higher aluminum content compared to the AZ31 series, AZ61A offers superior strength while maintaining good formability, particularly at elevated temperatures. This alloy represents an optimal balance between mechanical performance and manufacturability in the magnesium alloy family. --- #### **1. Chemical Composition (Weight %)** The chemical composition features higher aluminum content than AZ31 alloys, contributing to its enhanced strength. | Element | Minimum (%) | Maximum (%) | Key Function | | :--- | :--- | :--- | :--- | | **Aluminum (Al)** | 5.8 | 7.2 | Primary strengthener; significantly enhances strength through solid solution strengthening | | **Zinc (Zn)** | 0.4 | 1.5 | Additional strengthening element | | **Manganese (Mn)** | 0.15 | 0.50 | Improves corrosion resistance by forming stable compounds with iron | | **Silicon (Si)** | - | 0.10 | Impurity control | | **Copper (Cu)** | - | 0.05 | Impurity control | | **Iron (Fe)** | - | 0.005 | Impurity control | | **Nickel (Ni)** | - | 0.005 | Impurity control | | **Other Elements** | - | 0.30 (total) | - | | **Magnesium (Mg)** | **Balance** | | | *Note: The higher aluminum content (5.8-7.2%) compared to AZ31B (2.5-3.5%) provides significantly improved strength but slightly reduces ductility and weldability.* --- #### **2. Physical Properties** | Property | Value / Description | Condition | | :--- | :--- | :--- | | **Density** | 1.80 g/cm³ (0.065 lb/in³) | At 20°C | | **Melting Point** | ~ 525 - 610 °C (977 - 1130 °F) | - | | **Thermal Conductivity** | 72 - 84 W/m·K | At 25°C | | **Coefficient of Thermal Expansion** | 26.1 μm/m·°C | 20 - 100°C | | **Electrical Resistivity** | ~ 120 nΩ·m | At 20°C | | **Modulus of Elasticity** | 45 GPa (6.5 x 10⁶ psi) | - | | **Shear Modulus** | 17 GPa (2.4 x 10⁶ psi) | - | | **Poisson's Ratio** | 0.35 | - | --- #### **3. Mechanical Properties (Typical for F Temper - As-Fabricated)** The as-fabricated condition provides good mechanical properties suitable for many structural applications. | Property | Typical Value (Extrusions) | | :--- | :--- | | **Tensile Strength** | 260 - 310 MPa (38 - 45 ksi) | | **Yield Strength (0.2% Offset)** | 150 - 180 MPa (22 - 26 ksi) | | **Elongation** | 10 - 16% | | **Compressive Yield Strength** | 130 - 160 MPa (19 - 23 ksi) | | **Hardness** | 60 - 70 HB | *Note: Properties can vary depending on the fabrication method (extrusion ratio, rolling reduction) and section size.* --- #### **4. International Standards** AZ61A-F is recognized in several international standards for wrought magnesium products. | Standard Organization | Standard Designation | | :--- | :--- | | **ASTM International** | **ASTM B107/B107M** (Extruded Rod, Bar, Shapes) | | **SAE International** | **SAE J465** | | **UNS (Unified Numbering System)** | **M11610** | | **ISO (International Org. for Standardization)** | **ISO 3116** (Wrought Magnesium and Magnesium Alloys) | | **AMS (Aerospace Material Spec.)** | **AMS 4352** (Extruded Bars and Shapes) | --- #### **5. Product Applications** AZ61A-F's enhanced strength characteristics make it suitable for more demanding structural applications across various industries. * **Aerospace:** * Aircraft wing components and ribs * Structural brackets and fittings * Landing gear components * Engine accessory mounts * **Automotive:** * Steering wheel cores and components * Transmission cases and housings * Wheel rims (for specialty vehicles) * Engine brackets and supports * **Defense & Military:** * Weapon system components * Armor components * Portable equipment structures * Vehicle structural members * **Industrial Equipment:** * High-strength gears and cams * Machinery components requiring vibration damping * Material handling equipment parts * Portable tool housings and frames --- #### **6. Key Characteristics & Considerations** * **Advantages:** * **Higher Strength:** Superior mechanical properties compared to AZ31 alloys * **Good Hot Workability:** Excellent formability at elevated temperatures (200-400°C) * **Good Corrosion Resistance:** Adequate performance in normal atmospheric conditions * **Excellent Damping Capacity:** Effectively absorbs vibration and shock * **Good Machinability:** Can be machined to high precision with excellent surface finish * **Considerations:** * **Reduced Weldability:** Higher aluminum content makes welding more challenging than with AZ31 * **Moderate Room-Temperature Formability:** Less ductile than AZ31 at room temperature * **Corrosion Protection:** Requires protective coatings for severe environments * **Fabrication Sensitivity:** Properties in F temper are highly dependent on fabrication parameters **Summary:** **Magnesium AZ61A-F (UNS M11610)** is a medium-to-high strength wrought magnesium alloy that offers an optimal balance between mechanical performance and manufacturing flexibility. Its higher aluminum content provides significant strength advantages over the AZ31 series, making it particularly valuable for structural components in aerospace, automotive, and defense applications where both weight reduction and load-bearing capacity are critical requirements. The as-fabricated condition makes it readily available for components that will be used without subsequent heat treatment.

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 3297 gallon liquid totes Special package is available on request.