Elektron AZ80A Magnesium Alloy, UNS M11800，AMS4360; ASTM B91-12; FEDERAL QQ-M-40B,E FOUR

### **Elektron AZ80A Magnesium Alloy (UNS M11800)** **Product Overview** Elektron AZ80A is a high-strength magnesium-aluminum-zinc wrought alloy that represents one of the most widely used structural magnesium alloys in aerospace and high-performance applications. As a direct descendant of the AZ series, AZ80A offers an excellent balance of strength, ductility, and manufacturability, making it particularly suitable for forgings and extrusions where high static strength and good fatigue resistance are required. The alloy combines the benefits of age-hardening capability with good corrosion resistance when properly processed. This alloy is commonly supplied as forgings, extruded bars, and shapes, with mechanical properties typically optimized through T5 (artificially aged) or T6 (solution treated and aged) heat treatments. --- #### **1. Chemical Composition** The composition of AZ80A is carefully controlled to maximize strength while maintaining adequate workability. | Element | Composition (% by Weight) | | :---------------- | :-------------------------------- | | **Aluminum (Al)** | 7.8 - 9.2 % | | **Zinc (Zn)** | 0.2 - 0.8 % | | **Manganese (Mn)** | 0.12 - 0.50 % | | **Copper (Cu)** | ≤ 0.05 % | | **Iron (Fe)** | ≤ 0.05 % | | **Nickel (Ni)** | ≤ 0.005 % | | **Silicon (Si)** | ≤ 0.10 % | | **Other Impurities** | ≤ 0.30 % (each) | | **Magnesium (Mg)** | Balance | *Note:* The **aluminum** content provides solid solution strengthening and enables age-hardening through the formation of Mg₁₇Al₁₂ precipitates. **Manganese** improves corrosion resistance by removing iron impurities, while **zinc** enhances strength and contributes to precipitation hardening. --- #### **2. Physical & Mechanical Properties** AZ80A exhibits excellent mechanical properties, particularly in forged conditions. **Physical Properties:** * **Density:** 1.80 g/cm³ (0.065 lb/in³) * **Melting Range:** 430 - 600 °C (806 - 1112 °F) * **Coefficient of Thermal Expansion:** 26.8 μm/m·°C (20-200°C) * **Thermal Conductivity:** 78 W/m·K * **Modulus of Elasticity:** 45 GPa (6.5 × 10³ ksi) **Typical Mechanical Properties (T6 Condition - Forged):** * **Ultimate Tensile Strength (UTS):** 295 - 345 MPa (43 - 50 ksi) * **Tensile Yield Strength (TYS):** 195 - 235 MPa (28 - 34 ksi) * **Elongation:** 5 - 11% * **Compressive Yield Strength:** 195 - 235 MPa (28 - 34 ksi) * **Shear Strength:** 165 - 195 MPa (24 - 28 ksi) * **Fatigue Strength:** 125 - 145 MPa (18 - 21 ksi) **Elevated Temperature Performance:** * **Useful mechanical properties up to 150°C (302°F)** * **Good creep resistance below 120°C** * **Strength decreases gradually with increasing temperature** --- #### **3. International Standards & Specifications** AZ80A is recognized by major international standards organizations across multiple product forms. * **Unified Numbering System (UNS):** **UNS M11800** * **Aerospace Material Specification (AMS):** **AMS 4360** (Forgings) * **ASTM International:** **ASTM B91-12** (Standard Specification for Magnesium-Alloy Forgings) * **Federal Standard:** **QQ-M-40B** (Magnesium Alloy, Forgings and Extrusions) * **SAE International:** **SAE J465** * **European Standards:** **EN 1753 Mg-Al8Zn** --- #### **4. Product Applications** AZ80A is extensively used in aerospace, defense, and high-performance applications where weight reduction is critical. * **Aerospace & Defense:** * **Aircraft Landing Gear Components** * **Engine Mounting Brackets** * **Helicopter Rotor Hubs** * **Missile Body Sections** * **Aircraft Wheel Housings** * **High-Performance Automotive:** * **Racing Suspension Components** * **Steering System Parts** * **High-Performance Wheel Rims** * **Industrial & Commercial:** * **Portable Electronic Device Housings** * **Power Tool Components** * **Material Handling Equipment** * **Sporting Goods** --- **Summary** **Elektron AZ80A (UNS M11800)** stands as a benchmark high-strength magnesium wrought alloy, offering an optimal balance of mechanical properties, manufacturability, and cost-effectiveness. Its well-established **aluminum-zinc-manganese** alloy system provides reliable performance with excellent **strength-to-weight ratio** and good fatigue resistance. Compliance with prestigious standards including **AMS 4360**, **ASTM B91-12**, and **QQ-M-40B** ensures its qualification for critical aerospace and defense applications. While newer rare-earth containing alloys offer superior elevated temperature performance, AZ80A remains the preferred choice for applications requiring maximum room-temperature strength, proven reliability, and established manufacturing experience across global supply chains.

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 3400 gallon liquid totes Special package is available on request.