Magnesium AZ80A T4 Wrought Alloy (UNS M11800)，Mg-8Al-0.5Zn,E FOUR

Magnesium AZ80A-T4 Wrought Alloy (UNS M11800) Product Introduction** **Product Description** Magnesium AZ80A-T4 is a high-strength wrought magnesium alloy supplied in the solution heat-treated condition. Designated as UNS M11800 with nominal composition Mg-8Al-0.5Zn, this alloy offers an excellent combination of high strength, good ductility, and corrosion resistance. The T4 temper (solution heat treatment followed by natural aging) provides optimal conditions for subsequent forming operations and maximizes toughness for demanding structural applications. --- #### **1. Chemical Composition (Weight %)** | Element | Minimum (%) | Maximum (%) | | :--- | :--- | :--- | | **Aluminum (Al)** | 7.8 | 9.2 | | **Zinc (Zn)** | 0.20 | 0.8 | | **Manganese (Mn)** | 0.12 | 0.50 | | **Silicon (Si)** | - | 0.10 | | **Copper (Cu)** | - | 0.05 | | **Iron (Fe)** | - | 0.005 | | **Nickel (Ni)** | - | 0.005 | | **Other Elements** | - | 0.30 (total) | | **Magnesium (Mg)** | **Balance** | --- #### **2. Physical Properties** | Property | Value | | :--- | :--- | | **Density** | 1.80 g/cm³ (0.065 lb/in³) | | **Melting Range** | 430 - 605°C (806 - 1121°F) | | **Thermal Conductivity** | 78 W/m·K | | **Coefficient of Thermal Expansion** | 26.8 μm/m·°C (20-200°C) | | **Modulus of Elasticity** | 45 GPa (6.5 × 10⁶ psi) | | **Shear Modulus** | 17 GPa (2.5 × 10⁶ psi) | | **Poisson's Ratio** | 0.35 | | **Electrical Resistivity** | 130 nΩ·m | | **Specific Heat Capacity** | 1050 J/kg·K | --- #### **3. Mechanical Properties (T4 Condition)** | Property | Typical Value | | :--- | :--- | | **Tensile Strength** | 280 MPa (41 ksi) | | **Yield Strength (0.2% Offset)** | 180 MPa (26 ksi) | | **Elongation** | 11% | | **Compressive Yield Strength** | 180 MPa (26 ksi) | | **Hardness** | 62 HB | | **Shear Strength** | 160 MPa (23 ksi) | | **Fatigue Strength** | 110 MPa (16 ksi) | --- #### **4. International Standards** | Standard | Title | | :--- | :--- | | **ASTM B107/B107M** | Standard Specification for Magnesium-Alloy Extruded Bars, Rods, Profiles, Tubes, and Wire | | **SAE J465** | Magnesium Alloys (Cast and Wrought) | | **AMS 4355** | Magnesium Alloy, Extruded 8.5Al-0.5Zn (AZ80A-T4) | | **ISO 3116** | Magnesium and magnesium alloys - Wrought magnesium alloys | | **GB/T 5153** | Wrought magnesium and magnesium alloys (China) | --- #### **5. Heat Treatment Specification** * **Solution Treatment:** 410-425°C (770-795°F) for 2-8 hours * **Quenching Medium:** Hot water or air * **Aging:** Natural aging at room temperature * **Typical Hold Time:** 4-6 hours at solution temperature --- #### **6. Product Applications** * **Aerospace Components** * Aircraft structural brackets * Wing and fuselage components * Helicopter transmission parts * Spacecraft structural members * **Automotive Applications** * High-performance wheels * Steering system components * Engine mounting brackets * Transmission housings * **Defense & Military** * Weapon system components * Armor plating systems * Military vehicle structures * Portable equipment frames * **Industrial Equipment** * High-speed automation components * Robotics arms and joints * Material handling equipment * Precision machinery parts --- #### **7. Key Characteristics** * **Advantages:** * High strength-to-weight ratio * Excellent ductility and formability * Good corrosion resistance * Superior damping capacity * Excellent machinability * Good weldability in solution-treated condition * **Limitations:** * Lower strength than T5 or T6 tempers * Requires proper storage to prevent natural aging continuation * Limited elevated temperature performance * Higher cost than AZ31 series alloys * **Processing Characteristics:** * Good hot workability * Suitable for forging and extrusion * Can be cold formed after solution treatment * Excellent response to subsequent aging treatments * **Special Considerations:** * Ideal for components requiring further forming after heat treatment * Suitable for applications where maximum toughness is required * Recommended for welded structures * Good base condition for subsequent artificial aging **Summary** Magnesium AZ80A-T4 wrought alloy represents an optimal solution for applications requiring high strength combined with excellent formability and toughness. The solution heat treatment (T4 condition) provides a metallurgical state that maximizes ductility while maintaining substantial strength. This makes it particularly suitable for components that require additional forming operations after heat treatment or for applications where impact resistance is critical. Compliance with international standards including ASTM, AMS, and ISO ensures consistent quality and performance for demanding applications in aerospace, automotive, and defense industries. The alloy's unique combination of properties makes it an excellent choice for weight-critical structural components where both performance and manufacturability are essential considerations. --- *Note: This document provides technical information about Magnesium AZ80A-T4 (UNS M11800) and should be used as a reference for material selection and engineering design purposes.*

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 3305 gallon liquid totes Special package is available on request.