Magnesium ZK60A-F, Extruded Solids，UNS M16600;,E FOUR

### **Product Datasheet: Magnesium ZK60A-F, Extruded Solids (UNS M16600)** **High-Strength As-Extruded Magnesium Alloy** --- #### **1. Overview** Magnesium ZK60A-F (UNS M16600) is a high-strength magnesium alloy supplied in the as-extruded condition ("F" temper) without subsequent heat treatment. This alloy achieves its mechanical properties through a combination of high zinc content for solid solution strengthening and zirconium for grain refinement during the extrusion process. Extruded solids include bars, rods, and solid profiles that offer an excellent strength-to-weight ratio for structural applications where post-extrusion heat treatment is not feasible or required. --- #### **2. Key Features & Advantages** - **High Strength in As-Extruded Condition:** Good mechanical properties without heat treatment - **Excellent Strength-to-Weight Ratio:** 35% lighter than aluminum with comparable strength - **Fine Grain Structure:** Zirconium provides effective grain refinement during extrusion - **Good Corrosion Resistance:** Superior to many magnesium-aluminum alloys - **Cost-Effective:** Eliminates heat treatment costs - **Excellent Machinability:** High material removal rates with good surface finish - **Good Weldability:** Suitable for TIG and MIG welding processes --- #### **3. Chemical Composition (Weight %)** | Element | Magnesium (Balance) | Zinc | Zirconium | Manganese (max) | Silicon (max) | Other Elements (max) | |---------------|---------------------|--------------|--------------|-----------------|---------------|---------------------| | **Content (%)** | - | 4.8-6.2 | 0.45-1.0 | 0.15 | 0.10 | 0.30 total | *Note: The high zinc content (typically 5.5% nominal) provides substantial solid solution strengthening, while zirconium ensures fine, uniform grain structure through dynamic recrystallization during extrusion.* --- #### **4. Typical Physical & Mechanical Properties (F Temper - As Extruded)** **Physical Properties:** | Property | Value | |---------------------------|------------------------------| | **Density** | 1.83 g/cm³ (0.0661 lb/in³) | | **Melting Range** | 520-635°C (968-1175°F) | | **Thermal Conductivity** | 113 W/m·K | | **Specific Heat Capacity**| 1010 J/kg·K | | **Coefficient of Thermal Expansion** | 26.0 × 10⁻⁶/°C | | **Electrical Resistivity**| 8.8 μΩ·cm | **Mechanical Properties (Extruded Solids - F Temper):** | Property | Typical Value | Range | |---------------------------|----------------------------|--------------------------| | **Ultimate Tensile Strength** | 305 MPa (44 ksi) | 285-325 MPa (41-47 ksi) | | **Tensile Yield Strength**| 215 MPa (31 ksi) | 195-235 MPa (28-34 ksi) | | **Elongation** | 12% | 9-16% | | **Compressive Yield Strength** | 205 MPa (30 ksi) | 185-225 MPa (27-33 ksi) | | **Shear Strength** | 180 MPa (26 ksi) | 165-195 MPa (24-28 ksi) | | **Fatigue Strength** | 125 MPa (18 ksi) | 115-135 MPa (17-20 ksi) | | **Elastic Modulus** | 45 GPa (6.5×10⁶ psi) | 44-46 GPa (6.4-6.7×10⁶ psi) | | **Hardness** | 75 HB | 70-80 HB | | **Bearing Strength** | 460 MPa (67 ksi) | 440-480 MPa (64-70 ksi) | | **Bearing Yield Strength**| 330 MPa (48 ksi) | 310-350 MPa (45-51 ksi) | --- #### **5. International Standards** ZK60A-F Extruded Solids conform to: - **ASTM B107/B107M:** Standard Specification for Magnesium-Alloy Extruded Bars, Rods, Profiles, Tubes, and Wire - **UNS M16600:** Unified Numbering System designation - **ISO 3116:** Wrought magnesium and magnesium alloys - **AMS 4357:** Aerospace Material Specification for Extruded Bars and Shapes (F Temper) - **GB/T 5153:** Chinese National Standard for Wrought Magnesium Alloys - **DIN 9719:** Magnesium wrought alloys --- #### **6. Applications** **Aerospace & Defense:** - Aircraft structural brackets and fittings - Missile structural components - Helicopter transmission mounts - Satellite framework components - Radar equipment supports - Avionics mounting structures **Transportation & Automotive:** - Automotive seat frames - Racing vehicle suspension links - Motorcycle triple clamps - Bicycle crank arms and bottom brackets - Truck chassis components **Industrial Equipment:** - Robotics arm components - Material handling equipment parts - Machinery structural members - Portable equipment frameworks - Press and tooling components **Consumer & Sporting Goods:** - Bicycle frames and components - Sports equipment frames - Camera and optical equipment bodies - Professional audio equipment chassis - Portable medical device structures **Special Applications:** - Nuclear handling tools - Aerospace ground support equipment - Portable military structures - Emergency response equipment --- #### **7. Extrusion & Processing Parameters** **Extrusion Conditions:** - **Billet Temperature:** 320-400°C (608-752°F) - **Container Temperature:** 300-380°C (572-716°F) - **Die Temperature:** 330-390°C (626-734°F) - **Extrusion Ratio:** 10:1 to 25:1 (optimal 15:1-20:1) - **Ram Speed:** 1-6 m/min depending on diameter - **Quenching:** Air cooling after extrusion **Typical Extruded Solid Products:** - **Round Bars:** 6-150 mm diameter - **Square/Rectangular Bars:** 6-100 mm thickness - **Hexagonal Bars:** 6-75 mm across flats - **Custom Solid Profiles:** Various geometries **Machining Characteristics:** - **Machinability Rating:** Excellent (100% relative to steel) - **Cutting Speed:** 300-600 m/min recommended - **Surface Finish:** 0.8-3.2 μm Ra achievable - **Tool Life:** Extended tool life compared to steel - **Chip Characteristics:** Small, easily broken chips **Joining Methods:** - **TIG Welding:** Good with proper filler material - **MIG Welding:** Suitable for production applications - **Adhesive Bonding:** Good with proper surface preparation - **Mechanical Fastening:** Good thread strength and bearing properties --- #### **8. Quality Assurance & Specifications** - **Dimensional Tolerances:** Per ASTM B107 requirements - **Straightness:** 1.5 mm/m for commercial grade - **Surface Quality:** Smooth, uniform extruded surface - **Grain Size:** ASTM 8-10 typical for extruded solids - **Ultrasonic Testing:** Available upon request - **Certification:** Mill certification to specified requirements --- **Disclaimer** This technical data represents typical properties for ZK60A-F extruded solids. Properties may vary based on extrusion parameters, section size, and cooling conditions. The F temper condition provides good mechanical properties without additional heat treatment, offering cost savings for appropriate applications. Users should conduct appropriate testing to verify suitability for specific applications and consult relevant material specifications before use. Proper safety precautions for magnesium processing must be followed, particularly during machining operations.

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 3373 gallon liquid totes Special package is available on request.