Magnesium AS41XB-F, Die Cast， UNS M10412; Mg; ASTM B 94; European EN 1753 MC 21320,E FOUR

**Product Data Sheet: Magnesium AS41XB-F, Die Cast** **UNS M10412; ASTM B94; EN 1753 MC21320** --- **1. Overview** Magnesium AS41XB-F is an advanced high-temperature magnesium-aluminum-silicon die casting alloy with enhanced composition control and superior high-temperature performance. The "XB" designation represents an extra-grade quality with optimized aluminum-silicon ratio and stringent impurity limits, delivering exceptional creep resistance and mechanical stability for demanding automotive and aerospace applications. --- **2. International Standards** - **ASTM**: B94 (Die Castings) - **UNS**: M10412 - **EN**: 1753 MC21320 - **ISO**: 16220 - **SAE**: J465 - **DIN**: MgAl4Si - **JIS**: H 5303 - **GB/T**: 19078 --- **3. Chemical Composition (wt%)** | Element | Minimum | Maximum | |------------------|--------------|--------------| | Magnesium (Mg) | Balance | Balance | | Aluminum (Al) | 3.8 | 4.5 | | Silicon (Si) | 0.7 | 1.0 | | Manganese (Mn) | 0.22 | 0.40 | | Zinc (Zn) | – | 0.06 | | Copper (Cu) | – | 0.03 | | Iron (Fe) | – | 0.0030 | | Nickel (Ni) | – | 0.002 | | Other Impurities | – | 0.25 | --- **4. Physical Properties** | Property | Value | |-------------------------------|---------------------------------| | Density | 1.77 g/cm³ (0.064 lb/in³) | | Melting Range | 565-610°C (1049-1130°F) | | Thermal Conductivity | 77 W/m·K (at 25°C) | | Electrical Resistivity | 11.0 nΩ·m | | Coefficient of Thermal Expansion | 25.9 μm/m·°C (20-100°C) | | Specific Heat Capacity | 1045 J/kg·K | | Solidification Shrinkage | 3.9% | --- **5. Mechanical Properties (As-Die Cast)** | Property | Value (20°C) | Value (150°C) | Value (175°C) | |-------------------------------|---------------------|---------------------|---------------------| | Tensile Strength | 205-225 MPa | 150-170 MPa | 130-150 MPa | | Yield Strength (0.2% Offset) | 120-140 MPa | 95-110 MPa | 80-95 MPa | | Elongation (% in 50 mm) | 10-14% | 16-22% | 20-28% | | Hardness (Brinell) | 62-68 HB | 46-52 HB | 40-46 HB | | Fatigue Strength | 92-102 MPa | 68-78 MPa | 58-68 MPa | | Modulus of Elasticity | 45 GPa | 42 GPa | 40 GPa | --- **6. High-Temperature Performance** - Maximum continuous service temperature: 180°C (356°F) - 100-hour creep strength (150°C): 68 MPa - 1000-hour creep strength (150°C): 52 MPa - Exceptional thermal stability and creep resistance - Superior performance in sustained high-temperature applications --- **7. Die Casting Characteristics** - Excellent fluidity and mold filling capability - Optimal for wall thicknesses: 2.0-6.0 mm - Superior hot tearing resistance - Excellent die soldering resistance - Fast cycle times: 20-40 seconds - Premium surface finish: Ra 0.5-0.9 μm --- **8. Microstructural Features** - Fine, uniform distribution of Mg₂Si precipitates - Optimized aluminum-silicon ratio for maximum creep resistance - Reduced grain boundary phases - Homogeneous microstructure throughout casting --- **9. Applications** - **Automotive Powertrain**: Transmission cases, engine blocks, oil pans - **Automotive Components**: Turbocharger housings, intake manifolds, engine brackets - **Aerospace**: Gearbox components, accessory drive housings, engine mounts - **Industrial**: High-temperature pump housings, compressor casings - **Electronics**: Power electronics enclosures, heat management components --- **10. Corrosion Resistance** - Premium atmospheric corrosion resistance - Excellent high-temperature oxidation resistance - Superior performance in harsh environments - Compatible with advanced surface treatments: - Chrome-free conversion coatings - Plasma electrolytic oxidation (PEO) - Anodizing processes - High-performance coating systems --- **11. Fabrication & Secondary Operations** - **Machining**: Excellent machinability with superior surface finish - **Joining**: Optimal for adhesive bonding and mechanical fastening - **Welding**: TIG welding with compatible filler materials - **Heat Treatment**: Typically used in as-cast condition - **Finishing**: Excellent response to all surface treatment processes --- **12. Key Advantages** - Exceptional creep resistance up to 175°C - Enhanced mechanical properties at elevated temperatures - Superior corrosion resistance through advanced purity control - Excellent castability for complex components - Premium surface quality and dimensional stability - Optimal thermal fatigue resistance --- **13. Quality Assurance & Testing** - Chemical analysis per ASTM E1097 - Mechanical testing per ASTM B557 - High-temperature testing per ASTM E21 - Creep and stress rupture testing per ASTM E139 - Radiographic inspection per ASTM E505 - Corrosion testing per ASTM B117 - Microstructural analysis per ASTM E112 --- **14. Comparative Performance** | Property (at 150°C) | AS41XB-F | AS41B-F | AS41A-F | |-----------------------------|-------------|-------------|-------------| | Tensile Strength (MPa) | 150-170 | 140-160 | 130-150 | | 100-h Creep Strength (MPa) | 68 | 62 | 55 | | Elongation (%) | 16-22 | 14-20 | 12-18 | | Corrosion Resistance | Premium | Excellent | Good | | High-Temp Limit | 180°C | 175°C | 175°C | --- **15. Design Guidelines** - Minimum wall thickness: 1.8 mm - Recommended wall thickness: 2.5-5.0 mm - Draft angles: 1-2° - Fillet radii: Minimum 1.0 mm - Rib thickness: 50-70% of adjacent wall - Boss design: Use ribs for reinforcement --- *Note: Properties represent typical values for production conditions. Actual performance may vary based on specific casting parameters, component design, and wall thickness. For critical applications, comprehensive testing under actual service conditions is recommended. Consult with technical experts for application-specific guidance.*

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 3286 gallon liquid totes Special package is available on request.