Spherical Latrobe Crusader™ ASTM M3-2 High Speed Steel Powder

Latrobe Crusader™ ASTM M3-2 High Speed Steel Spherical Powder Product Information -:- For detailed product information, please contact sales. -: Latrobe Crusader™ ASTM M3-2 High Speed Steel Spherical Powder Synonyms -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: Spherical Latrobe Crusader™ ASTM M3-2 High Speed Steel Powder characteristics -:- For detailed product information, please contact sales. -: Spherical Latrobe Crusader™ ASTM M3-2 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 Crusader™ ASTM M3-2 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 Crusader™ ASTM M3-2 High Speed Steel Powder Chemical Composition -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: Latrobe Crusader™ ASTM M3-2 High Speed Steel Product Information -:- For detailed product information, please contact sales. -: # **Latrobe Crusader™ ASTM M3-2 High Speed Steel** ## **Premium High-Carbon, High-Vanadium HSS for Maximum Wear Resistance** Latrobe Crusader™ M3-2 is an elite super high-speed steel engineered for the most demanding machining applications requiring extreme wear resistance and cutting edge retention. As the higher-carbon, higher-vanadium variant within the M3 class (ASTM A600 M3 Class 2), it represents a significant advancement over standard M2 and even M3-1 grades, offering superior performance in highly abrasive and high-temperature cutting conditions. This grade is specifically designed for applications where tool life and consistent performance under severe wear are paramount. --- ### **Key Features & Benefits** - **Exceptional Wear Resistance**: Maximized vanadium and carbon content creates the highest volume of hard vanadium carbides (MC type) among conventional molybdenum-based HSS, providing outstanding abrasion resistance - **Superior Hot Hardness**: Maintains cutting edge integrity and hardness at temperatures exceeding 550°C (1020°F), enabling productive machining of hard materials - **Extended Tool Life**: Dramatically reduced flank wear and edge degradation translate to longer production runs and reduced tool change frequency - **Optimized for Modern Coatings**: Excellent substrate for PVD and CVD coatings (TiN, TiAlN, AlCrN) due to high base hardness and thermal stability - **Precision Manufacturing**: Controlled solidification and hot working ensure uniform carbide distribution and minimal carbide segregation --- ### **Chemical Composition (Typical %, ASTM A600 M3 Class 2)** | Element | Carbon (C) | Tungsten (W) | Molybdenum (Mo) | Chromium (Cr) | Vanadium (V) | Cobalt (Co) | |---------|------------|--------------|-----------------|---------------|--------------|-------------| | **Content** | 1.15 - 1.25 | 5.75 - 6.50 | 4.75 - 5.50 | 3.75 - 4.50 | 2.70 - 3.30 | - | *Note: Class 2 represents the highest standard vanadium content in the M3 classification. Silicon (Si) 0.20-0.45% and Manganese (Mn) 0.15-0.40% are present as standard. The high carbon content ensures optimal carbide formation without excess retained austenite.* --- ### **Physical & Mechanical Properties** | Property | Value / Description | |----------|---------------------| | **Density** | 8.16 g/cm³ | | **Thermal Conductivity** | 22-25 W/m·K at 20°C | | **Specific Heat Capacity** | 0.46 kJ/kg·K at 20°C | | **Coefficient of Thermal Expansion** | 10.5 × 10⁻⁶/K (20-400°C) | | **Hardness (Annealed)** | 230-255 HB | | **Hardness (Heat Treated)** | **66-68 HRC** (typical achievable range) | | **Transverse Rupture Strength** | 3,000-3,600 MPa (at 66 HRC) | | **Compressive Strength** | 3,600-4,100 MPa (at 66 HRC) | | **Modulus of Elasticity** | 215-225 GPa | | **Impact Toughness** | Moderate – optimized for wear resistance over shock loading | --- ### **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**: 230-255 HB - **Special Note**: Higher annealing temperature may be required due to increased alloy content #### **Stress Relieving** - **Temperature**: 650-680°C (1200-1255°F) - **Hold Time**: 1.5-2 hours per inch of thickness minimum - **Cooling**: Slow furnace cool to 500°C (930°F), then air cool #### **Hardening (Critical Process)** 1. **Preheating**: **Mandatory double preheat**
• First: 750-800°C (1380-1470°F)
• Second: 980-1010°C (1795-1850°F) – complete equalization essential 2. **Austenitizing**: **1205-1220°C (2200-2225°F)** – precise control ±5°C critical 3. **Soak Time**: 2-4 minutes per inch of cross-section (minimum 2 minutes) 4. **Quenching**: Oil (preferred) or salt bath; air cooling only for very thin sections 5. **Immediate Handling**: Cool to 50-65°C (120-150°F) before proceeding #### **Tempering (Essential for Performance)** - **Temperature Range**: 540-570°C (1005-1060°F) - **Cycles**: **Triple tempering mandatory** – some applications benefit from quadruple temper - **Duration**: Minimum 2 hours per cycle, air cool to room temperature between cycles - **Target Hardness**: Peak at 66-68 HRC, typically achieved at 540-550°C (1005-1020°F) - **Critical Avoidance**: Never temper between 205-480°C (400-900°F) #### **Sub-Zero Treatment (Recommended)** - **Application**: Highly recommended for maximum transformation of retained austenite - **Temperature**: -100 to -120°C (-148 to -184°F) - **Timing**: After quenching, before first temper - **Duration**: 3-4 hours minimum - **Benefit**: Increases final hardness, dimensional stability, and wear resistance --- ### **International Standards & Equivalent Grades** | Standard | Grade Designation | Notes | |----------|-------------------|-------| | **ASTM** | A600 M3 Class 2 | Primary specification | | **ISO** | HS6-5-3C | ISO 4957 designation | | **DIN** | 1.3345 / S 6-5-3 | German standard, often with specific carbide requirements | | **JIS** | SKH53 / M3-2 | Japanese industrial standard | | **AFNOR** | HS6-5-3C (Z85WDCV 06-05-04-03C) | French association standard | | **GB** | W6Mo5Cr4V3 (高碳) | Chinese approximate equivalent | | **UNS** | T11323 | Unified Numbering System | --- ### **Typical Applications** #### **Premium Cutting Tools (Where Wear is Primary Failure Mode)** - **High-Performance End Mills**: For machining hardened steels (45-62 HRC), high-temperature alloys (Inconel, Waspaloy), and abrasive composites - **Precision Boring Tools**: Fine boring bars and inserts for achieving tight tolerances in abrasive materials - **Gear Cutting Tools**: Premium hobs, shaper cutters, and skiving tools for hardened gear materials - **Threading Tools**: High-performance taps, thread mills, and thread whirling tools for difficult materials - **Reamers & Broaches**: Precision finishing tools where edge sharpness retention is critical - **Solid Carbide Alternatives**: In applications where HSS toughness is needed but carbide-like wear resistance is desired #### **Specialized Industrial Tooling** - **Cold Forming Tools**: Punches, dies, and headers for abrasive or work-hardening materials - **Fine Blanking Tools**: Punches and dies requiring extreme edge retention - **Woodworking & Composite Tools**: Router bits, shaper cutters, and trimming tools for abrasive composites (CFRP, GFRP) - **Knives & Blades**: Industrial cutting blades for abrasive non-metallic materials (fiberglass, carbon fiber, plastics) #### **Industry-Specific Applications** - **Aerospace Manufacturing**: Machining titanium alloys (Ti-6Al-4V), nickel-based superalloys, and composite aircraft components - **Automotive High-Performance**: Machining hardened transmission components, camshafts, and turbocharger parts - **Die & Mold**: Core pins, ejector pins, and inserts for abrasive plastic molding (filled plastics, ceramics) - **Energy Sector**: Tools for machining valve components, turbine blades, and oilfield equipment - **Medical Device Manufacturing**: Cutting tools for cobalt-chrome alloys, stainless steels, and titanium implants --- ### **Machining & Fabrication Notes** #### **Machinability (Annealed Condition)** - **Rating**: 25-35% of B1112 free-machining steel – **difficult to machine** - **Recommended Tools**: **Carbide tools only** – use grades suitable for hard turning - **Cutting Speeds**: 5-10 m/min (15-30 SFM) for turning operations - **Feed Rates**: Light to moderate with sharp, positive rake geometries - **Coolant**: **Essential** – use heavy-duty soluble oil or high-performance synthetic coolant - **Tool Geometry**: Sharp cutting edges, adequate clearance angles to reduce rubbing #### **Grindability** - **Relative Rating**: 30-40 (vs. 100 for annealed O1 tool steel) – **very difficult to grind** - **Abrasive Requirements**: Use premium **CBN (cubic boron nitride) or diamond wheels** for best results - **Conventional Abrasives**: Only ceramic alumina or seeded gel abrasives if CBN unavailable - **Wheel Maintenance**: Frequent dressing required – hard, open-structure wheels recommended - **Coolant**: **Flood coolant mandatory** to prevent burning and micro-cracking - **Grinding Parameters**: Light infeeds, high wheel speeds, continuous downfeed #### **EDM Machining** - Suitable but generates a hard, brittle recast layer (white layer) - **Stress relieving after rough EDM is mandatory** - Final heat treatment should follow finish EDM operations - Additional grinding or polishing required to remove affected surface layer - Consider slow, fine-finish EDM settings to minimize recast layer thickness --- ### **Quality Assurance & Metallurgical Standards** #### **Microstructural Requirements** - **Carbide Distribution**: Uniform, fine dispersion of primarily MC (vanadium) carbides - **Maximum Carbide Size**: Strictly controlled – typically ≤12 microns for premium quality - **Carbide Network**: Absence of continuous carbide networks at grain boundaries - **Grain Size**: ASTM 9 or finer - **Decarburization**: ≤0.08 mm per side on finished products - **Non-Metallic Inclusions**: ASTM E45, Method D, ≤1.5 total rating #### **Testing & Certification** - Full traceability from electrode to finished product - Chemical analysis via optical emission spectroscopy with wet chemistry verification - Hardness testing at multiple stages of production - **Carbide analysis** – size, distribution, and type characterization available - Microcleanliness rating per ASTM E45 and SEP 1571 - Certified material test reports including all relevant metallurgical data --- ### **Available Product Forms** | Form | Standard Sizes | Condition | Surface Finish | Special Notes | |------|---------------|-----------|----------------|---------------| | **Round Bars** | 5mm - 200mm diameter | Annealed | Ground, Polished | Centerless ground for precision toolmaking | | **Precision Ground Flat Stock** | 6-50mm thickness | Annealed | Ground & Polished | Tight tolerances for mold components | | **Forged Blanks** | Custom dimensions | Annealed | As-forged, Rough machined | Optimized grain flow for specific tools | | **Billets** | 150-300mm diameter | Annealed | Rough turned | For larger tool applications | | **Wire & Strip** | 1-10mm diameter/thickness | Annealed, Hardened & Tempered | Bright, Polished | Limited availability | | **Near-Net Shapes** | Per customer drawing | Annealed | As-forged | Reduced machining time and cost | --- ### **Technical Comparison with Related Grades** | Property | Crusader™ M3-2 | M3-1 | M4 | M42 (8% Co) | |----------|----------------|------|----|-------------| | **Wear Resistance** | **Excellent** | Very High | Excellent | Excellent | | **Hot Hardness** | Excellent | Excellent | Excellent | **Superior** | | **Toughness** | Moderate | Good | Fair to Moderate | Fair | | **Grindability** | **Very Difficult** | Difficult | Extremely Difficult | Moderate | | **Peak Hardness (HRC)** | 66-68 | 65-67 | 65-67 | 67-69 | | **Primary Advantage** | Maximum wear in Mo-HSS | Balanced wear/toughness | Extreme wear | Hot hardness | --- ### **Storage & Handling Protocol** 1. **Storage Environment**: Climate-controlled, low-humidity storage preferred 2. **Corrosion Protection**: Coated with high-performance rust preventive oil; VCI paper wrapping for long-term storage 3. **Material Handling**: Use clean gloves; avoid direct skin contact to prevent corrosion 4. **Identification**: Clearly marked with grade, heat number, size, and inspection status 5. **First-In-First-Out**: Implement FIFO system for inventory management --- ### **Technical Support & Value-Added Services** Latrobe provides comprehensive technical support for Crusader™ M3-2: - **Application Engineering**: Consultative support for tool design and grade selection - **Heat Treatment Development**: Custom protocols for specific tool geometries and applications - **Failure Analysis Laboratory**: Root cause analysis of tool performance issues - **Machining & Grinding Workshops**: Hands-on training for fabricators - **Coating Partnerships**: Recommendations for optimal coating substrates and pretreatments --- **Select Latrobe Crusader™ ASTM M3-2 High Speed Steel** for the most demanding applications where wear resistance is the primary concern and where tool life extension justifies the additional grinding and fabrication challenges. This premium grade represents the pinnacle of conventional molybdenum-based high-speed steel technology, offering near-carbide performance with the toughness and manufacturability advantages of HSS. Crusader™ M3-2 is the strategic choice when machining highly abrasive materials, hardened steels, or when maximizing time between tool changes directly impacts production efficiency and cost. -:- For detailed product information, please contact sales. -: Latrobe Crusader™ ASTM M3-2 High Speed Steel Specification Dimensions Size： Diameter 20-1000 mm Length <7150 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 Crusader™ ASTM M3-2 High Speed Steel Properties -:- For detailed product information, please contact sales. -:

Spherical Latrobe Crusader™ ASTM M3-2 High Speed Steel Powder Particle Size Description -:- For detailed product information, please contact sales. -: Applications of Spherical Latrobe Crusader™ ASTM M3-2 High Speed Steel Powder -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: Applications of Latrobe Crusader™ ASTM M3-2 High Speed Steel Spherical Powder -:- For detailed product information, please contact sales. -: Chemical Identifiers Latrobe Crusader™ ASTM M3-2 High Speed Steel Spherical Powder -:- For detailed product information, please contact sales. -:

Packing of Latrobe Crusader™ ASTM M3-2 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 3621 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