Spherical Latrobe Tatmo-V™ AISI M7 High Speed Steel Powder

Latrobe Tatmo-V™ AISI M7 High Speed Steel Spherical Powder Product Information -:- For detailed product information, please contact sales. -: Latrobe Tatmo-V™ AISI M7 High Speed Steel Spherical Powder Synonyms -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: Spherical Latrobe Tatmo-V™ AISI M7 High Speed Steel Powder characteristics -:- For detailed product information, please contact sales. -: Spherical Latrobe Tatmo-V™ AISI M7 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 Tatmo-V™ AISI M7 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 Tatmo-V™ AISI M7 High Speed Steel Powder Chemical Composition -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: Latrobe Tatmo-V™ AISI M7 High Speed Steel Product Information -:- For detailed product information, please contact sales. -: # **Latrobe Tatmo-V™ AISI M7 High Speed Steel** ## **The Balanced High-Vanadium Molybdenum HSS for Demanding Operations** Latrobe Tatmo-V™ M7 is a premium high-vanadium, molybdenum-based high-speed steel that represents an optimal balance between wear resistance and toughness in the HSS family. As an AISI M7 grade, it provides superior performance in applications requiring excellent abrasion resistance combined with good shock resistance. This versatile steel is engineered for tools that must withstand both abrasive wear and intermittent cutting forces, making it a preferred choice for complex machining operations and demanding production environments. --- ### **Key Features & Benefits** - **Superior Wear Resistance**: Elevated vanadium content provides enhanced resistance to abrasive wear compared to standard M2 grades - **Excellent Toughness**: Optimized carbon-to-vanadium ratio maintains good impact resistance for interrupted cutting operations - **Enhanced Hot Hardness**: Retains cutting edge integrity at elevated temperatures up to 540°C (1000°F) - **Good Grindability**: Balanced composition allows for better grindability than higher-vanadium M3 and M4 grades - **Versatile Performance**: Effective across a wide range of materials from carbon steels to high-temperature alloys - **Cost-Effective Solution**: Provides performance advantages over M2 without the grinding challenges of M3/M4 grades --- ### **Chemical Composition (Typical %, AISI M7 Specification)** | Element | Carbon (C) | Tungsten (W) | Molybdenum (Mo) | Chromium (Cr) | Vanadium (V) | Cobalt (Co) | |---------|------------|--------------|-----------------|---------------|--------------|-------------| | **Content** | 0.97 - 1.05 | 1.40 - 2.10 | 8.20 - 9.20 | 3.50 - 4.50 | 1.75 - 2.25 | - | *Note: Tatmo-V™ M7 maintains a balanced carbon-to-vanadium ratio that optimizes both wear resistance and toughness. Silicon (Si) 0.20-0.55% and Manganese (Mn) 0.15-0.40% are present as standard alloying elements.* --- ### **Physical & Mechanical Properties** | Property | Value / Description | |----------|---------------------| | **Density** | 8.06 g/cm³ | | **Thermal Conductivity** | 24-28 W/m·K at 20°C | | **Specific Heat Capacity** | 0.46 kJ/kg·K at 20°C | | **Coefficient of Thermal Expansion** | 10.8 × 10⁻⁶/K (20-400°C) | | **Hardness (Annealed)** | 215-240 HB | | **Hardness (Heat Treated)** | **64-66 HRC** (typical working range) | | **Transverse Rupture Strength** | 3,800-4,300 MPa (at 65 HRC) | | **Compressive Strength** | 3,900-4,400 MPa (at 65 HRC) | | **Modulus of Elasticity** | 210-220 GPa | | **Impact Toughness** | Very Good for high-vanadium HSS | --- ### **Heat Treatment Guidelines** #### **Annealing** - **Temperature**: 840-870°C (1545-1600°F) - **Method**: Slow furnace cool at ≤22°C (40°F) per hour to 600°C (1110°F), then air cool - **Resultant Hardness**: 215-240 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**: 815-845°C (1500-1550°F) – equalize thoroughly 2. **Second Preheat**: 980-1010°C (1795-1850°F) – recommended for complex tools 3. **Austenitizing**: **1190-1210°C (2175-2210°F)** – precise control critical 4. **Quenching**: Oil, salt, or air cooling depending on section size 5. **Immediate Treatment**: Cool to 50-65°C (120-150°F) before tempering #### **Tempering** - **Temperature Range**: 540-595°C (1005-1105°F) - **Cycles**: Double or triple temper required - **Duration**: Minimum 2 hours per cycle, air cool between cycles - **Target Hardness**: 64-66 HRC achieved at 540-565°C (1005-1050°F) - **Critical Note**: Avoid tempering in the 205-425°C (400-800°F) range --- ### **International Standards & Equivalent Grades** | Standard | Grade Designation | Notes | |----------|-------------------|-------| | **AISI/SAE** | M7 | Primary specification | | **ASTM** | A600 M7 | UNS T11307 | | **ISO** | HS1-9-2 (Approximate) | ISO 4957 | | **DIN** | 1.3348 / S 1-9-2 | German standard | | **JIS** | SKH58 / M7 | Japanese standard | | **AFNOR** | HS1-9-2 | French association standard | | **GB** | W2Mo9Cr4V2 | Chinese equivalent | | **UNS** | T11307 | Unified Numbering System | --- ### **Typical Applications** #### **High-Performance Cutting Tools** - **End Mills**: General purpose and high-performance end mills requiring good wear resistance and toughness - **Drills**: Twist drills for abrasive materials and interrupted cutting conditions - **Taps & Thread Mills**: For threading operations in tough materials where wear resistance is needed - **Reamers & Boring Tools**: Precision finishing tools requiring good edge retention - **Gear Cutting Tools**: Hobs and shaper cutters for production gear machining - **Form Tools & Cut-off Blades**: Tools requiring a balance of wear resistance and toughness #### **Specialized Industrial Applications** - **Cold Work Tooling**: Punches and dies requiring good wear resistance with impact resistance - **Woodworking Tools**: Router bits and shaper cutters for composite materials - **Knives & Blades**: Industrial cutting blades for mixed material applications - **Wear Components**: Guide pins and wear plates in moderate abrasive conditions #### **Industry-Specific Uses** - **Automotive Manufacturing**: Tools for machining cast iron, alloy steels, and transmission components - **General Machining**: Versatile tools for job shops and production environments - **Aerospace**: Tools for aluminum alloys, titanium, and composite materials - **Mold & Die**: Core pins and inserts for plastic molding applications --- ### **Machining & Fabrication Notes** #### **Machinability (Annealed Condition)** - **Rating**: 40-50% of B1112 free-machining steel - **Recommended Tools**: Carbide or premium coated HSS tools - **Cutting Speeds**: 10-15 m/min (30-50 SFM) for turning operations - **Coolant**: Heavy-duty soluble oil or synthetic coolant recommended #### **Grindability** - **Relative Rating**: 50-60 (vs. 100 for annealed O1 tool steel) - **Recommendations**: Use aluminum oxide or SG abrasives - **Coolant**: Ample coolant flow to prevent thermal damage - **Wheel Selection**: Medium-hard wheels with open structure --- ### **Quality Assurance Standards** #### **Microstructural Requirements** - **Carbide Distribution**: Uniform dispersion of fine carbides - **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 chemical analysis verification - Hardness testing throughout production - Microstructure evaluation available - Certified test reports with shipment --- ### **Available Product Forms** | Form | Standard Sizes | Condition | Surface Finish | |------|---------------|-----------|---------------| | **Round Bars** | 3mm - 300mm diameter | Annealed | Black, Peeled, Ground | | **Flat Bars** | 6-150mm thickness | Annealed | Mill, Ground | | **Squares** | 6-100mm | Annealed | As-rolled, Ground | | **Forged Blanks** | Custom dimensions | Annealed | As-forged, Machined | | **Wire** | 0.5-10mm diameter | Annealed, Hardened | Bright, Polished | --- ### **Technical Comparison** | Property | Tatmo-V™ M7 | Standard M2 | M3-1 | M42 | |----------|--------------|-------------|------|-----| | **Wear Resistance** | Very Good | Good | Very Good | Excellent | | **Toughness** | Very Good | Good | Good | Fair | | **Hot Hardness** | Excellent | Excellent | Excellent | Superior | | **Grindability** | Good | Very Good | Moderate | Good | | **Primary Advantage** | Balanced wear/toughness | All-purpose | Enhanced wear | Hot hardness | --- ### **Storage & Handling** 1. **Storage Conditions**: Dry environment with rust protection 2. **Handling**: Clean gloves recommended 3. **Identification**: Clearly marked with grade and heat number 4. **Shelf Life**: Indefinite with proper protection --- **Select Latrobe Tatmo-V™ AISI M7 High Speed Steel** for applications requiring a superior balance of wear resistance and toughness. This grade provides enhanced performance over standard M2 in abrasive conditions while maintaining better grindability and toughness than higher-vanadium grades like M3 and M4. Tatmo-V™ M7 represents an optimal choice for demanding machining applications where both wear resistance and shock resistance are critical to tool performance and longevity. -:- For detailed product information, please contact sales. -: Latrobe Tatmo-V™ AISI M7 High Speed Steel Specification Dimensions Size： Diameter 20-1000 mm Length <7152 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 Tatmo-V™ AISI M7 High Speed Steel Properties -:- For detailed product information, please contact sales. -:

Spherical Latrobe Tatmo-V™ AISI M7 High Speed Steel Powder Particle Size Description -:- For detailed product information, please contact sales. -: Applications of Spherical Latrobe Tatmo-V™ AISI M7 High Speed Steel Powder -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: Applications of Latrobe Tatmo-V™ AISI M7 High Speed Steel Spherical Powder -:- For detailed product information, please contact sales. -: Chemical Identifiers Latrobe Tatmo-V™ AISI M7 High Speed Steel Spherical Powder -:- For detailed product information, please contact sales. -:

Packing of Latrobe Tatmo-V™ AISI M7 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 3623 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