Magnesium AM60B-F, Die Cast，UNS M10602; Mg; ASTM B 94; European EN 1753 MC21230 (Ingot UNS M10603),E FOUR

### **Product Datasheet: Magnesium AM60B-F Die Cast Alloy** **Introduction** Magnesium AM60B-F is a high-purity version of the AM60A magnesium die casting alloy, featuring stricter control over impurity elements to enhance corrosion resistance and mechanical properties. The "B" designation indicates improved purity levels, particularly for iron, copper, and nickel contents. This alloy maintains the excellent balance of strength and ductility characteristic of the AM60 series while offering superior corrosion performance, making it suitable for applications requiring extended service life in various environments. --- #### **1. Chemical Composition (Weight %)** Composition per ASTM B94, EN 1753 MC21230, and UNS M10602/M10603: | Element | Content (%) | |---------|-------------| | **Aluminum (Al)** | 5.6 - 6.4 | | **Manganese (Mn)** | 0.26 - 0.50 | | **Zinc (Zn)** | ≤ 0.20 | | **Silicon (Si)** | ≤ 0.08 | | **Copper (Cu)** | ≤ 0.004 | | **Iron (Fe)** | ≤ 0.004 | | **Nickel (Ni)** | ≤ 0.001 | | **Other Elements** | ≤ 0.30 (total) | | **Magnesium (Mg)** | Remainder | **Key Purity Features:** - Copper content reduced to ≤0.004% (vs. 0.008% in AM60A) - Enhanced manganese-to-iron ratio for improved corrosion resistance - Tighter control of tramp elements --- #### **2. Physical Properties** | Property | Value | |----------|--------| | **Density** | 1.78 g/cm³ (0.064 lb/in³) | | **Melting Range** | 540 - 615°C (1004 - 1139°F) | | **Thermal Conductivity** | 62 W/m·K | | **Coefficient of Thermal Expansion** | 25.9 µm/m·K (20-100°C) | | **Modulus of Elasticity** | 45 GPa (6.5 × 10⁶ psi) | | **Specific Heat Capacity** | 1050 J/kg·K | | **Electrical Resistivity** | 125 nΩ·m | | **Solidification Shrinkage** | 4.1% | --- #### **3. Mechanical Properties (As Die Cast)** **Room Temperature Properties:** | Property | Value | |----------|--------| | **Tensile Strength, Ultimate** | 225 - 255 MPa (32,600 - 37,000 psi) | | **Tensile Strength, Yield (0.2% Offset)** | 125 - 140 MPa (18,100 - 20,300 psi) | | **Elongation** | 8 - 12% (in 2 inches) | | **Compressive Yield Strength** | 125 - 140 MPa (18,100 - 20,300 psi) | | **Hardness, Brinell** | 60 - 65 HB | | **Shear Strength** | 145 - 165 MPa (21,000 - 23,900 psi) | | **Fatigue Strength** | 95 - 115 MPa (13,800 - 16,700 psi) | | **Impact Strength (Charpy)** | 5 - 7 J (3.7 - 5.2 ft-lb) | **Corrosion Performance:** - Salt spray resistance: 300-500 hours to 5% red rust - Improved galvanic corrosion resistance - Better performance in humid environments --- #### **4. International Standards** **Primary Standards:** - **ASTM**: **B94** - Standard Specification for Magnesium-Alloy Die Castings - **European**: **EN 1753 MC21230** - Magnesium alloy ingots and castings - **UNS**: **M10602** (Castings), **M10603** (Ingot) **Additional Recognition:** - **ISO**: **ISO 16220** - Magnesium and magnesium alloys - **SAE**: **J465** - Wrought and Cast Magnesium Alloys - **JIS**: **H 2221** - Magnesium alloy die castings - **DIN**: **1729-2** - Magnesium casting alloys - **GB/T**: **GB/T 19078** - Magnesium alloy die castings --- #### **5. Product Applications** **Automotive Applications:** - **Seat frames and components** - **Instrument panel supports** - **Steering wheel cores** - **Bracket and pedal assemblies** - **Transmission components** - **Engine covers and brackets** - **Wheel components** **Electronics & Consumer:** - **Laptop computer housings** - **Power tool housings** - **Camera body frames** - **Portable electronic devices** - **Consumer electronics enclosures** **Aerospace & Defense:** - **Aircraft interior components** - **Avionics enclosures** - **Military equipment housings** - **Communication device frames** **Industrial Applications:** - **Lawn and garden equipment** - **Material handling components** - **Textile machinery parts** - **Industrial equipment housings** --- #### **6. Die Casting Characteristics** **Process Parameters:** - **Optimal Die Temperature**: 230-280°C (450-540°F) - **Metal Pouring Temperature**: 640-680°C (1185-1255°F) - **Injection Speed**: 30-50 m/s - **Gate Velocity**: 35-55 m/s **Casting Performance:** - Excellent fluidity and mold filling capability - Good resistance to hot cracking - Suitable for thin-walled sections (down to 1.5mm) - Low porosity in properly designed castings - Good surface finish with minimal soldering - Reduced die erosion due to controlled iron content --- #### **7. Manufacturing Considerations** **Machinability:** - Excellent machining characteristics - Good chip formation and surface finish - Extended tool life - Recommended cutting speeds: 300-600 m/min **Joining Methods:** - Adhesive bonding (excellent compatibility) - Mechanical fastening (good thread strength) - TIG welding (with proper filler materials) - Resistance spot welding **Surface Treatment:** - Chromate conversion coating - Anodizing treatments (HAE, Magoxid-Coat) - Electroplating (with special pre-treatment) - Powder coating and painting systems - E-coating for automotive applications --- #### **8. Quality & Performance Features** **Advantages over AM60A:** - Enhanced corrosion resistance - Improved purity and consistency - Better performance in harsh environments - Extended service life - Reduced galvanic corrosion issues **Design Benefits:** - Excellent strength-to-weight ratio - Superior ductility and impact resistance - Good energy absorption characteristics - Excellent damping capacity - Good electromagnetic shielding - 100% recyclable --- **Technical Notes:** 1. AM60B-F provides improved corrosion resistance while maintaining mechanical properties of AM60A 2. Ideal for automotive applications where corrosion performance is critical 3. Suitable for components exposed to road salts and humid environments 4. Enhanced purity reduces galvanic corrosion in multi-material assemblies 5. Meets stringent automotive and electronics industry standards **Disclaimer:** This information is provided for reference purposes. Actual properties may vary depending on die casting parameters, component design, and wall thickness. Users should verify suitability for specific applications through appropriate testing and consult current editions of ASTM B94, EN 1753, and other relevant standards for design and procurement 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 3280 gallon liquid totes Special package is available on request.