Spherical Latrobe CM-50™ ASTM M50 High Speed Steel Powder

Latrobe CM-50™ ASTM M50 High Speed Steel Spherical Powder Product Information -:- For detailed product information, please contact sales. -: Latrobe CM-50™ ASTM M50 High Speed Steel Spherical Powder Synonyms -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: Spherical Latrobe CM-50™ ASTM M50 High Speed Steel Powder characteristics -:- For detailed product information, please contact sales. -: Spherical Latrobe CM-50™ ASTM M50 High Speed Steel Powder Particle Size -:- For detailed product information, please contact sales. -: -:- -:- 0-15μm ,5-25μm, 15-45μm, 15-53μm,20-63um, 45-75μm, 45-105μm, 45-150μm ,75-150μm. (Various granularities can be customized according to customer requirements) -:- For detailed product information, please contact sales. -:

Spherical Latrobe CM-50™ ASTM M50 High Speed Steel Powder Applicable processes -:- For detailed product information, please contact sales. -: Laser/electron beam additive manufacturing (SLM/EBM, 3D printing) Direct laser deposition (DLD) Used in thermal spray (TSA) Powder hot isostatic pressing (HIP) Metal injection molding (MIM) Powder metallurgy (PM) Laser cladding (LC), etc. -:- For detailed product information, please contact sales. -: Spherical Latrobe CM-50™ ASTM M50 High Speed Steel Powder Chemical Composition -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: Latrobe CM-50™ ASTM M50 High Speed Steel Product Information -:- For detailed product information, please contact sales. -: # **Latrobe CM-50™ ASTM M50 High Speed Steel** ## **Premium Molybdenum HSS for Aerospace Bearing Applications and Precision Tools** Latrobe CM-50™ M50 is a premium, cobalt-free molybdenum-based high-speed steel specifically engineered for exceptional performance in high-temperature bearing applications and precision cutting tools. As an ASTM A600 M50 grade, it represents a specialized class of HSS optimized for applications requiring excellent hot hardness, good wear resistance, and dimensional stability under thermal cycling conditions. CM-50™ is particularly valued in aerospace bearing applications while also serving as an excellent material for various cutting tools. --- ### **Key Features & Benefits** - **Excellent Hot Hardness**: Maintains hardness and dimensional stability at elevated temperatures up to 315-425°C (600-800°F) - **Good Wear Resistance**: Balanced composition provides adequate abrasion resistance for demanding applications - **Superior Dimensional Stability**: Minimal distortion during heat treatment and excellent resistance to thermal cycling - **Cost-Effective Alternative**: Cobalt-free composition offers good performance at lower cost than cobalt-bearing grades - **Good Toughness**: Provides reasonable impact resistance for interrupted cutting operations - **Consistent Performance**: Reliable heat treatment response with predictable results --- ### **Chemical Composition (Typical %, ASTM A600 M50)** | Element | Carbon (C) | Molybdenum (Mo) | Chromium (Cr) | Vanadium (V) | Tungsten (W) | Other | |---------|------------|-----------------|---------------|--------------|--------------|-------| | **Content** | 0.80 - 0.90 | 4.00 - 4.50 | 4.00 - 4.50 | 0.90 - 1.10 | 0.75 - 1.25 | Si: 0.20-0.45
Mn: 0.15-0.40 | *Note: The "CM-50" designation highlights the clean metallurgy and consistent quality. Cobalt is intentionally excluded from this grade. The composition represents an optimal balance for bearing applications with moderate molybdenum and vanadium levels.* --- ### **Physical & Mechanical Properties** | Property | Value / Description | |----------|---------------------| | **Density** | 8.10 g/cm³ | | **Thermal Conductivity** | 26-30 W/m·K at 20°C | | **Specific Heat Capacity** | 0.47 kJ/kg·K at 20°C | | **Coefficient of Thermal Expansion** | 11.0 × 10⁻⁶/K (20-400°C) | | **Hardness (Annealed)** | 200-225 HB | | **Hardness (Heat Treated)** | **62-64 HRC** (typical optimized working range) | | **Hot Hardness Retention** | Maintains good hardness up to 425°C (800°F) | | **Transverse Rupture Strength** | 3,800-4,400 MPa (at 63 HRC) | | **Compressive Strength** | 3,600-4,200 MPa (at 63 HRC) | | **Modulus of Elasticity** | 210-220 GPa | | **Impact Toughness** | Very Good – optimized for bearing applications | --- ### **Heat Treatment Guidelines** #### **Annealing** - **Temperature**: 830-860°C (1525-1580°F) - **Method**: Slow furnace cool at ≤22°C (40°F) per hour to 600°C (1110°F), then air cool - **Resultant Hardness**: 200-225 HB #### **Stress Relieving** - **Temperature**: 650-675°C (1200-1245°F) - **Hold Time**: 1-2 hours per inch of thickness - **Cooling**: Air cool to room temperature #### **Hardening** 1. **Preheating**: 800-830°C (1470-1525°F) – thorough equalization 2. **Second Preheat**: 980-1010°C (1795-1850°F) – recommended for complex parts 3. **Austenitizing**: **1200-1220°C (2190-2225°F)** – precise control recommended 4. **Quenching**: Oil quenching preferred; air cooling suitable for thin sections 5. **Immediate Handling**: Cool to 50-65°C (120-150°F) before tempering #### **Tempering** - **Temperature Range**: 540-580°C (1005-1075°F) - **Cycles**: **Double tempering required**; triple tempering for optimum stability - **Duration**: Minimum 2 hours per cycle, air cool between cycles - **Target Hardness**: 62-64 HRC typically achieved at 540-560°C (1005-1040°F) - **Special Note**: Dimensional stability is particularly important for bearing applications --- ### **International Standards & Equivalent Grades** | Standard | Grade Designation | Notes | |----------|-------------------|-------| | **ASTM** | A600 M50 | Primary specification (UNS T11350) | | **AMS** | 6491 | Aerospace Material Specification | | **DIN** | 1.3551 (Approximate) | German standard reference | | **ISO** | Not specifically standardized | Often compared to Mo-based HSS grades | | **UNS** | T11350 | Unified Numbering System | | **AISI** | M50 | American Iron and Steel Institute | --- ### **Typical Applications** #### **Aerospace Bearing Applications (Primary Use)** - **Aircraft Engine Bearings**: Main shaft bearings, gearbox bearings for turbine engines - **Auxiliary Power Unit (APU) Bearings**: Critical rotating components - **Aerospace Transmission Bearings**: Gearbox and transmission components - **High-Temperature Bearings**: Applications operating at elevated temperatures #### **Precision Cutting Tools** - **Gear Cutting Tools**: Hobs, shapers, and finishing tools for gear manufacturing - **Broaches**: Internal and surface broaches requiring dimensional stability - **Precision Reamers**: Finishing tools for close tolerance holes - **Form Tools**: Complex shaped tools for lathes and screw machines - **Milling Cutters**: Tools requiring good hot hardness and wear resistance #### **Specialized Industrial Components** - **High-Speed Spindles**: Precision spindle components for machine tools - **Wear Parts**: Components requiring good wear resistance and dimensional stability - **Tool Holders**: Precision tool holding components - **Gauges and Fixtures**: Precision measurement and holding devices --- ### **Machining & Fabrication Notes** #### **Machinability (Annealed Condition)** - **Rating**: 50-60% of B1112 free-machining steel - **Recommended Tools**: HSS or carbide tools both suitable - **Cutting Speeds**: 12-18 m/min (40-60 SFM) for turning operations - **Feed Rates**: Moderate feeds possible - **Coolant**: Standard soluble oils adequate #### **Grindability** - **Relative Rating**: 65-75 (vs. 100 for annealed O1 tool steel) - **Abrasive Recommendations**: Standard aluminum oxide wheels effective - **Wheel Maintenance**: Normal dressing intervals - **Coolant**: Standard grinding coolant adequate #### **Special Considerations for Bearings** - **Surface Finish**: Critical for bearing applications – often requires superfinishing - **Dimensional Control**: Tight tolerances essential - **Microstructure**: Clean steel with minimal inclusions required - **Non-Destructive Testing**: Often required for critical aerospace components --- ### **Quality Assurance & Metallurgical Standards** #### **Microstructural Requirements** - **Carbide Distribution**: Uniform, fine dispersion of carbides - **Grain Size**: ASTM 8 or finer - **Decarburization**: ≤0.08 mm per side on finished products - **Non-Metallic Inclusions**: Stringent requirements for bearing applications - **Cleanliness**: High standards for aerospace bearing quality #### **Testing & Certification** - Full chemical analysis verification - Hardness testing at multiple production stages - Microstructural evaluation for bearing applications - Non-destructive testing available (UT, MT, PT) - Certified material test reports with special bearing certifications available --- ### **Available Product Forms** | Form | Standard Sizes | Condition | Surface Finish | |------|---------------|-----------|----------------| | **Round Bars** | 5mm - 300mm diameter | Annealed | Turned, Ground, Polished | | **Forged Rings** | Custom dimensions | Annealed | As-forged, Machined | | **Bearing Blanks** | Precision dimensions | Annealed | Machined to close tolerances | | **Billets** | 100-400mm diameter | Annealed | Rough turned | - **Special Forms**: Custom forged shapes for bearing applications --- ### **Technical Comparison** | Property | CM-50™ M50 | M2 | 52100 | M50NiL | |----------|-------------|----|-------|--------| | **Hot Hardness** | Very Good | Good | Fair | Good | | **Wear Resistance** | Good | Very Good | Good | Good | | **Toughness** | Very Good | Good | Fair | Excellent | | **Dimensional Stability** | **Excellent** | Good | Good | Excellent | | **Primary Application** | Bearings | Cutting tools | Bearings | Aerospace bearings | | **Cost Effectiveness** | Good | Very Good | Excellent | Moderate | --- ### **Aerospace Specifications** CM-50™ M50 meets or exceeds requirements for: - **AMS 6491**: Forging bars and rings - **Pratt & Whitney**, **GE Aviation**, **Rolls-Royce**: Various engine manufacturer specifications - **NASA**: Space application standards - **MIL Specifications**: Military aerospace standards --- ### **Economic Considerations** 1. **Material Cost**: Moderate – more expensive than 52100 but less than cobalt grades 2. **Performance Value**: Excellent for specialized bearing applications 3. **Life Cycle Cost**: Superior performance in high-temperature bearing applications 4. **Reliability**: Proven performance in critical aerospace applications --- ### **Storage & Handling** 1. **Storage Conditions**: Clean, dry environment 2. **Corrosion Protection**: Standard rust preventive adequate 3. **Handling**: Careful handling to prevent surface damage 4. **Identification**: Clearly marked with grade and heat number 5. **Traceability**: Full traceability essential for aerospace applications --- ### **Technical Support** Latrobe provides technical support for CM-50™ M50 applications: - **Application Engineering**: Guidance on bearing and tool applications - **Heat Treatment Support**: Protocols for optimal performance - **Quality Assurance**: Assistance with aerospace certification requirements - **Troubleshooting**: Support for manufacturing and application issues --- **Select Latrobe CM-50™ ASTM M50 High Speed Steel** for applications requiring excellent hot hardness, dimensional stability, and reliable performance in demanding environments. While specifically developed for aerospace bearing applications, this versatile grade also serves well in precision cutting tools and other components requiring stability under thermal cycling. CM-50™ M50 represents an optimal balance of performance and cost for applications where cobalt-bearing grades are unnecessary but standard tool steels are insufficient. For aerospace bearings, precision tools, and components requiring stability at moderate elevated temperatures, CM-50™ delivers proven, reliable performance. -:- For detailed product information, please contact sales. -: Latrobe CM-50™ ASTM M50 High Speed Steel Specification Dimensions Size： Diameter 20-1000 mm Length <7158 mm Size:We can customized as required Standard： Per your request or drawing We can customized as required Properties（Theoretical） Chemical Composition -:- For detailed product information, please contact sales. -: Latrobe CM-50™ ASTM M50 High Speed Steel Properties -:- For detailed product information, please contact sales. -:

Spherical Latrobe CM-50™ ASTM M50 High Speed Steel Powder Particle Size Description -:- For detailed product information, please contact sales. -: Applications of Spherical Latrobe CM-50™ ASTM M50 High Speed Steel Powder -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: Applications of Latrobe CM-50™ ASTM M50 High Speed Steel Spherical Powder -:- For detailed product information, please contact sales. -: Chemical Identifiers Latrobe CM-50™ ASTM M50 High Speed Steel Spherical Powder -:- For detailed product information, please contact sales. -:

Packing of Latrobe CM-50™ ASTM M50 High Speed Steel Spherical Powder -:- For detailed product information, please contact sales. -: Standard Packing: -:- For detailed product information, please contact sales. -: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and Steel Spherical Powder 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 3629 gallon liquid totes Special package is available on request. E FORUs’ is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition