Magnesium AM50A-F, Die Cast，UNS M10500; ASTM B 94; European EN 1753 MC21220 (Ingot UNS M10501),E FOUR

### **Product Datasheet: Magnesium AM50A-F Die Cast Alloy** **Introduction** Magnesium AM50A-F is a high-ductility die casting alloy that offers an excellent balance of strength, ductility, and energy absorption. The alloy designation indicates it contains approximately 5% Aluminum (A) and Manganese (M), with the "-F" temper specifying it is used in the as-fabricated condition from die casting. AM50A provides superior elongation and impact strength compared to higher aluminum-content alloys like AZ91D, while maintaining good strength characteristics, making it ideal for automotive safety components and structural applications. --- #### **1. Chemical Composition (Weight %)** Composition per ASTM B94, EN 1753 MC21220, and UNS M10500/M10501: | Element | Content (%) | |---------|-------------| | **Aluminum (Al)** | 4.5 - 5.3 | | **Manganese (Mn)** | 0.28 - 0.50 | | **Zinc (Zn)** | ≤ 0.20 | | **Silicon (Si)** | ≤ 0.08 | | **Copper (Cu)** | ≤ 0.008 | | **Iron (Fe)** | ≤ 0.004 | | **Nickel (Ni)** | ≤ 0.001 | | **Other Elements** | ≤ 0.30 (total) | | **Magnesium (Mg)** | Remainder | --- #### **2. Physical Properties** | Property | Value | |----------|--------| | **Density** | 1.77 g/cm³ (0.064 lb/in³) | | **Melting Range** | 543 - 620°C (1010 - 1148°F) | | **Thermal Conductivity** | 65 W/m·K | | **Coefficient of Thermal Expansion** | 26.0 µm/m·K (20-100°C) | | **Modulus of Elasticity** | 45 GPa (6.5 × 10⁶ psi) | | **Specific Heat Capacity** | 1020 J/kg·K | | **Electrical Resistivity** | 130 nΩ·m | | **Solidification Shrinkage** | 4.2% | --- #### **3. Mechanical Properties (As Die Cast)** **Room Temperature Properties:** | Property | Value | |----------|--------| | **Tensile Strength, Ultimate** | 210 - 240 MPa (30,500 - 34,800 psi) | | **Tensile Strength, Yield (0.2% Offset)** | 110 - 125 MPa (16,000 - 18,100 psi) | | **Elongation** | 8 - 15% (in 2 inches) | | **Compressive Yield Strength** | 110 - 125 MPa (16,000 - 18,100 psi) | | **Hardness, Brinell** | 55 - 65 HB | | **Shear Strength** | 140 - 160 MPa (20,300 - 23,200 psi) | | **Fatigue Strength** | 90 - 110 MPa (13,100 - 16,000 psi) | | **Impact Strength (Charpy)** | 5 - 8 J (3.7 - 5.9 ft-lb) | **Elevated Temperature Properties:** - Useful mechanical properties maintained up to 120°C (250°F) - Good creep resistance at moderate temperatures - Stable dimensional characteristics --- #### **4. International Standards** **Primary Standards:** - **ASTM**: **B94** - Standard Specification for Magnesium-Alloy Die Castings - **European**: **EN 1753 MC21220** - Magnesium alloy ingots and castings - **UNS**: **M10500** (Castings), **M10501** (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 (China) --- #### **5. Product Applications** **Automotive Applications:** - **Steering wheel cores** (primary application) - **Seat frames and components** - **Instrument panel supports** - **Bracket and pedal assemblies** - **Wheel rims** (for specialty vehicles) - **Valve covers and intake manifolds** **Aerospace & Defense:** - Aircraft interior components - Electronic equipment enclosures - Military equipment housings **Consumer & Industrial:** - Power tool housings - Lawn and garden equipment - Material handling components - Sports equipment frames --- #### **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 --- #### **7. Manufacturing Considerations** **Machinability:** - Excellent machining characteristics - Good chip formation and surface finish - Extended tool life compared to ferrous materials - 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 (standard protection) - 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:** - Excellent strength-to-weight ratio - Superior ductility and impact resistance - Good energy absorption characteristics - Excellent damping capacity - Good electromagnetic shielding - 100% recyclable **Design Considerations:** - Lower strength than AZ91D but higher ductility - Good corrosion resistance with proper surface treatment - Suitable for safety-critical applications - Excellent for components requiring energy management --- **Technical Notes:** 1. AM50A provides optimal balance between strength and ductility for structural applications 2. Particularly suitable for components requiring energy absorption in crash scenarios 3. Good performance at both room and elevated temperatures 4. Compatible with all standard magnesium finishing processes 5. Meets automotive quality and performance standards worldwide **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 3276 gallon liquid totes Special package is available on request.