Spherical Latrobe HS-105™ ASTM M35 DIN 1.3243 High Speed Steel Powder

Latrobe HS-105™ ASTM M35 DIN 1.3243 High Speed Steel Spherical Powder Product Information -:- For detailed product information, please contact sales. -: Latrobe HS-105™ ASTM M35 DIN 1.3243 High Speed Steel Spherical Powder Synonyms -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: Spherical Latrobe HS-105™ ASTM M35 DIN 1.3243 High Speed Steel Powder characteristics -:- For detailed product information, please contact sales. -: Spherical Latrobe HS-105™ ASTM M35 DIN 1.3243 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 HS-105™ ASTM M35 DIN 1.3243 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 HS-105™ ASTM M35 DIN 1.3243 High Speed Steel Powder Chemical Composition -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: Latrobe HS-105™ ASTM M35 DIN 1.3243 High Speed Steel Product Information -:- For detailed product information, please contact sales. -: # **Latrobe HS-105™ ASTM M35 High Speed Steel** ## **Premium Cobalt-Enhanced HSS for Superior Hot Hardness and Cutting Performance** Latrobe HS-105™ M35 is a premium cobalt-enhanced high-speed steel (ASTM A600 M35 / DIN 1.3243) engineered to deliver exceptional performance in demanding high-temperature machining applications. By incorporating 5% cobalt into a modified M2 base composition, this grade achieves significantly improved hot hardness, wear resistance, and cutting edge retention at elevated temperatures. HS-105™ is the material of choice for tools operating at high speeds and feeds, or when machining difficult-to-cut materials that generate substantial heat at the cutting edge. --- ### **Key Features & Benefits** - **Superior Hot Hardness**: 5% cobalt addition substantially enhances hardness retention at elevated temperatures (up to 600°C/1110°F) - **Enhanced Wear Resistance**: Cobalt strengthens the steel matrix, improving resistance to abrasive and adhesive wear - **Excellent Red Hardness**: Maintains cutting edge integrity under high thermal loading conditions - **Good Toughness**: Balanced composition provides respectable impact resistance despite high hardness capability - **Improved Productivity**: Enables higher cutting speeds and feeds than standard HSS grades - **Versatile Application Range**: Effective on a wide spectrum of materials from stainless steels to superalloys --- ### **Chemical Composition (Typical %, ASTM A600 M35 / DIN 1.3243)** | Element | Carbon (C) | Tungsten (W) | Molybdenum (Mo) | Chromium (Cr) | Vanadium (V) | Cobalt (Co) | |---------|------------|--------------|-----------------|---------------|--------------|-------------| | **Content** | 0.88 - 0.96 | 5.90 - 6.70 | 4.70 - 5.20 | 3.80 - 4.50 | 1.75 - 2.05 | 4.70 - 5.20 | *Note: HS-105™ maintains precise control over cobalt content to ensure consistent hot hardness properties. Silicon (Si) 0.20-0.45% and Manganese (Mn) 0.15-0.40% are present as standard alloying elements. The composition represents an optimal balance between M2's wear resistance and cobalt's hot hardness enhancement.* --- ### **Physical & Mechanical Properties** | Property | Value / Description | |----------|---------------------| | **Density** | 8.17 g/cm³ | | **Thermal Conductivity** | 25-28 W/m·K at 20°C (improved over standard M2) | | **Specific Heat Capacity** | 0.46 kJ/kg·K at 20°C | | **Coefficient of Thermal Expansion** | 10.4 × 10⁻⁶/K (20-400°C) | | **Hardness (Annealed)** | 220-245 HB | | **Hardness (Heat Treated)** | **65-67 HRC** (typical optimized working range) | | **Hot Hardness** | Maintains ~60 HRC at 600°C (1110°F) | | **Transverse Rupture Strength** | 3,500-4,100 MPa (at 66 HRC) | | **Compressive Strength** | 3,800-4,400 MPa (at 66 HRC) | | **Modulus of Elasticity** | 220-230 GPa | | **Impact Toughness** | Good – balanced with high hardness capability | --- ### **Heat Treatment Guidelines** #### **Annealing** - **Temperature**: 850-870°C (1560-1600°F) - **Method**: Slow furnace cool at ≤20°C (36°F) per hour to 600°C (1110°F), then air cool - **Resultant Hardness**: 220-245 HB - **Special Note**: Cobalt content may require slightly extended soaking times #### **Stress Relieving** - **Temperature**: 650-680°C (1200-1255°F) - **Hold Time**: 1-2 hours per inch of thickness - **Cooling**: Slow furnace cool to 500°C (930°F), then air cool #### **Hardening** 1. **Preheating**: **Critical for cobalt grades**
• First: 800-830°C (1470-1525°F) – thorough equalization
• Second: 980-1010°C (1795-1850°F) – complete conditioning 2. **Austenitizing**: **1210-1230°C (2210-2245°F)** – precise temperature control essential 3. **Soak Time**: 2-4 minutes per inch of cross-section 4. **Quenching**: Oil quenching preferred; salt bath for complex geometries 5. **Immediate Handling**: Cool to 50-65°C (120-150°F) before tempering #### **Tempering (Enhanced by Cobalt)** - **Temperature Range**: 540-580°C (1005-1075°F) - **Cycles**: **Triple tempering recommended** for optimum performance - **Duration**: Minimum 2 hours per cycle, air cool between cycles - **Target Hardness**: 65-67 HRC typically achieved at 540-560°C (1005-1040°F) - **Cobalt Effect**: Enhances secondary hardening response and tempering resistance #### **Sub-Zero Treatment (Optional but Beneficial)** - **Application**: Recommended for maximum dimensional stability - **Temperature**: -80 to -100°C (-112 to -148°F) - **Timing**: After quenching, before first temper - **Duration**: 2-3 hours - **Benefit**: Particularly effective for complex tools requiring precise dimensions --- ### **International Standards & Equivalent Grades** | Standard | Grade Designation | Notes | |----------|-------------------|-------| | **ASTM** | A600 M35 | Primary specification (UNS T11335) | | **DIN** | 1.3243 / S 6-5-2-5 | German standard with cobalt specification | | **ISO** | HS6-5-2-5 | ISO 4957 designation | | **JIS** | SKH55 / M35 | Japanese industrial standard | | **AFNOR** | HS6-5-2-5 (Z85WDCV 06-05-04-02-05) | French association standard | | **GB** | W6Mo5Cr4V2Co5 | Chinese equivalent | | **UNS** | T11335 | Unified Numbering System | | **Proprietary** | HS-105™ | Latrobe Special Steel designation | --- ### **Typical Applications** #### **High-Performance Cutting Tools** - **Premium End Mills**: For high-speed milling of stainless steels, high-temperature alloys, and titanium - **Drills & Reamers**: High-performance twist drills, core drills, and precision reamers for difficult materials - **Threading Tools**: Taps, thread mills, and thread whirling tools for production operations - **Gear Manufacturing**: Hobs, shaper cutters, and finishing tools requiring hot hardness - **Form Tools & Inserts**: Complex shaped tools for high-temperature machining conditions - **Boring Bars & Inserts**: Tools for precision boring operations in heat-generating materials #### **Specialized Industrial Applications** - **Hot Work Tooling**: Applications where tools operate at elevated temperatures - **High-Speed Machining**: Tools for CNC operations at maximum machine capabilities - **Production Tooling**: High-volume manufacturing where extended tool life reduces changeover frequency - **Aerospace Tooling**: Tools for machining heat-resistant superalloys and titanium components #### **Industry-Specific Uses** - **Aerospace Manufacturing**: Machining Inconel, Waspaloy, titanium alloys, and other high-temperature materials - **Automotive Performance**: High-speed machining of hardened components and production parts - **Energy Sector**: Tools for turbine components, valve parts, and oilfield equipment - **Die & Mold**: Core pins and inserts for high-temperature plastic molding - **Medical Device**: Tools for cobalt-chrome alloys and stainless steels requiring precision and edge retention --- ### **Machining & Fabrication Notes** #### **Machinability (Annealed Condition)** - **Rating**: 40-50% of B1112 free-machining steel - **Recommended Tools**: Carbide tools preferred for turning; premium HSS for milling - **Cutting Speeds**: 10-15 m/min (30-50 SFM) for turning operations - **Feed Rates**: Moderate feeds with good chip control - **Coolant**: Heavy-duty soluble oil or synthetic coolant recommended - **Note**: Cobalt slightly increases work hardening tendency during machining #### **Grindability** - **Relative Rating**: 50-60 (vs. 100 for annealed O1 tool steel) - **Abrasive Recommendations**: Aluminum oxide or ceramic alumina wheels - **Wheel Maintenance**: Regular dressing required for optimal results - **Coolant**: Ample coolant flow to prevent thermal damage - **Advantage**: Better grindability than many high-cobalt or high-vanadium grades #### **EDM Machining** - Suitable for wire EDM and sinker EDM operations - Stress relieve after rough machining operations - Final heat treatment recommended after EDM completion - Cobalt content may affect electrical conductivity slightly --- ### **Quality Assurance & Metallurgical Standards** #### **Microstructural Requirements** - **Carbide Distribution**: Uniform dispersion of MC and M₆C type carbides - **Cobalt Distribution**: Even distribution within the steel matrix - **Grain Size**: ASTM 8 or finer - **Decarburization**: ≤0.10 mm per side on finished products - **Non-Metallic Inclusions**: ASTM E45 Method A, ≤2.0 total rating #### **Testing & Certification** - Full traceability from melt to final product - Complete chemical analysis including cobalt verification - Hardness testing at multiple production stages - Hot hardness testing available for critical applications - Microstructural evaluation with emphasis on carbide and cobalt distribution - Certified material test reports with detailed cobalt specification --- ### **Available Product Forms** | Form | Standard Sizes | Condition | Surface Finish | |------|---------------|-----------|---------------| | **Round Bars** | 5mm - 250mm diameter | Annealed | Centerless Ground, Polished | | **Flat Bars** | 6-150mm thickness | Annealed | Ground, Mill finish | | **Squares** | 6-100mm | Annealed | Ground, As-rolled | | **Forged Blanks** | Custom dimensions | Annealed | As-forged, Rough machined | | **Billets** | 100-300mm diameter | Annealed | Rough turned | - **Special Forms**: Pre-hardened stock, precision ground flat stock, and custom forgings available --- ### **Technical Comparison** | Property | HS-105™ M35 | Standard M2 | M42 (8% Co) | M7 | |----------|--------------|-------------|-------------|----| | **Hot Hardness** | **Excellent** | Good | **Superior** | Good | | **Wear Resistance** | Very Good | Good | Excellent | Very Good | | **Toughness** | Good | Very Good | Fair | Very Good | | **Grindability** | Good | Very Good | Good | Good | | **Peak Hardness (HRC)** | 65-67 | 64-66 | 67-69 | 64-66 | | **Primary Advantage** | Balanced hot hardness | Cost-effective | Maximum hot hardness | Balanced wear/toughness | | **Relative Cost** | High | Medium | Very High | Medium-High | --- ### **Coating Compatibility** HS-105™ M35 provides an excellent substrate for advanced tool coatings: - **PVD Coatings**: TiN, TiCN, TiAlN, AlCrN – excellent adhesion and performance - **CVD Coatings**: TiC, TiCN, TiN – good compatibility - **Special Advantage**: High base hardness and thermal stability enhance coating performance - **Pre-treatment**: Standard polishing and cleaning procedures apply --- ### **Economic Considerations** 1. **Higher Initial Cost**: Typically 30-50% more expensive than standard M2 2. **Extended Tool Life**: Often provides 50-100% longer tool life in appropriate applications 3. **Increased Productivity**: Enables higher cutting parameters, reducing machining time 4. **Reduced Downtime**: Longer tool life means fewer tool changes and less machine downtime 5. **Overall Value**: Excellent return on investment in demanding applications --- ### **Storage & Handling** 1. **Storage Conditions**: Dry, temperature-controlled environment recommended 2. **Corrosion Protection**: Apply rust preventive oil for long-term storage 3. **Handling**: Use clean gloves and proper handling equipment 4. **Identification**: Clearly marked with grade, heat number, and cobalt specification 5. **Shelf Life**: Indefinite with proper protection and storage conditions --- ### **Technical Support Services** Latrobe provides comprehensive support for HS-105™ M35 applications: - **Application Engineering**: Technical assistance for tool design and parameter optimization - **Heat Treatment Guidance**: Custom protocols for specific applications - **Performance Testing**: Laboratory testing and validation services - **Troubleshooting Support**: Analysis of tool performance and failure investigation - **Technical Training**: Educational programs on cobalt-enhanced HSS technology --- **Select Latrobe HS-105™ ASTM M35 High Speed Steel** when your applications require superior hot hardness and cutting performance in high-temperature machining conditions. This 5% cobalt-enhanced grade represents the optimal balance between enhanced high-temperature performance and practical manufacturability. HS-105™ M35 delivers extended tool life, higher productivity, and improved reliability when machining difficult materials or operating at elevated cutting parameters. For applications where heat generation at the cutting edge limits tool performance, HS-105™ provides a proven solution that maximizes both tool life and machining efficiency. -:- For detailed product information, please contact sales. -: Latrobe HS-105™ ASTM M35 DIN 1.3243 High Speed Steel Specification Dimensions Size： Diameter 20-1000 mm Length <7155 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 HS-105™ ASTM M35 DIN 1.3243 High Speed Steel Properties -:- For detailed product information, please contact sales. -:

Spherical Latrobe HS-105™ ASTM M35 DIN 1.3243 High Speed Steel Powder Particle Size Description -:- For detailed product information, please contact sales. -: Applications of Spherical Latrobe HS-105™ ASTM M35 DIN 1.3243 High Speed Steel Powder -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: Applications of Latrobe HS-105™ ASTM M35 DIN 1.3243 High Speed Steel Spherical Powder -:- For detailed product information, please contact sales. -: Chemical Identifiers Latrobe HS-105™ ASTM M35 DIN 1.3243 High Speed Steel Spherical Powder -:- For detailed product information, please contact sales. -:

Packing of Latrobe HS-105™ ASTM M35 DIN 1.3243 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 3626 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