Latrobe,DuraTech™ 30 Powder Metal High Speed Steel Tube,Pipe (ASTM M3-2)

Latrobe DuraTech™ 30 Powder Metal High Speed Steel Tube (ASTM M3-2) Product Information -:- For detailed product information, please contact sales. -: Latrobe DuraTech™ 30 Powder Metal High Speed Steel Tube (ASTM M3-2) Synonyms -:- For detailed product information, please contact sales. -:

Latrobe DuraTech™ 30 Powder Metal High Speed Steel (ASTM M3-2) Product Information -:- For detailed product information, please contact sales. -: # **Latrobe DuraTech™ 30 Powder Metallurgy High Speed Steel** ## **Premium PM-HSS with Ultra-Fine Microstructure for Superior Toughness and Wear Balance** Latrobe DuraTech™ 30 PM is an advanced powder metallurgy high-speed steel based on ASTM A600 M3 Class 2 chemistry, engineered to deliver an exceptional balance of wear resistance and toughness through revolutionary microstructural control. Produced via state-of-the-art powder metallurgy processes, this material eliminates the inherent limitations of conventional ingot metallurgy, offering consistently fine carbide distribution, isotropic properties, and performance characteristics unattainable with traditional manufacturing methods. DuraTech™ 30 represents a significant advancement in tool steel technology for applications demanding both high wear resistance and good impact strength. --- ### **Key Features & Benefits** - **Ultra-Fine, Uniform Microstructure**: Powder metallurgy process yields extremely fine carbides (typically 1-3 µm) with complete homogeneity, free from segregation - **Optimal Toughness-Wear Balance**: Enhanced transverse rupture strength and impact resistance while maintaining exceptional wear characteristics - **Superior Grindability**: Fine, uniform carbide structure allows for significantly easier grinding than conventional M3-2 (30-50% improvement) - **Isotropic Properties**: Uniform mechanical properties in all directions, eliminating directional weaknesses - **Exceptional Consistency**: Batch-to-batch uniformity with predictable heat treatment response - **Enhanced Polishability**: Fine microstructure enables superior surface finishes for precision applications --- ### **Chemical Composition (Typical %, ASTM A600 M3 Class 2 via PM Process)** | Element | Carbon (C) | Tungsten (W) | Molybdenum (Mo) | Chromium (Cr) | Vanadium (V) | Cobalt (Co) | Gas Content | |---------|------------|--------------|-----------------|---------------|--------------|-------------|-------------| | **Content** | 1.20 - 1.30 | 5.75 - 6.50 | 4.75 - 5.50 | 3.75 - 4.50 | 2.80 - 3.30 | - | O₂ ≤ 50 ppm
N₂ ≤ 150 ppm | *Note: DuraTech™ 30 maintains the high-carbon, high-vanadium specification of M3 Class 2 but achieves dramatically superior microstructure through powder metallurgy manufacturing. Silicon and Manganese are controlled to 0.10-0.40% each. The "30" designation references the approximate 3% vanadium content and the premium performance tier.* --- ### **Physical & Mechanical Properties** | Property | Value / Description | |----------|---------------------| | **Density** | ≥ 8.15 g/cm³ (near theoretical density, typically >99.5%) | | **Thermal Conductivity** | 23-26 W/m·K at 20°C | | **Specific Heat Capacity** | 0.46 kJ/kg·K at 20°C | | **Coefficient of Thermal Expansion** | 10.4 × 10⁻⁶/K (20-400°C) | | **Porosity** | ≤ 0.5% (Class 1 per ASTM B328) | | **Hardness (Annealed)** | 240-260 HB | | **Hardness (Heat Treated)** | **66-68 HRC** (achievable working range) | | **Transverse Rupture Strength** | 4,200-5,000 MPa (at 67 HRC) – 35-50% improvement over conventional M3-2 | | **Compressive Strength** | 4,000-4,600 MPa (at 67 HRC) | | **Modulus of Elasticity** | 220-230 GPa | | **Impact Toughness** | 50-70% improvement over conventional M3-2 at equivalent hardness | | **Fatigue Strength** | Significantly enhanced due to homogeneous microstructure | --- ### **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) - **Resultant Hardness**: 240-260 HB - **Special Note**: PM materials require controlled annealing cycles for optimal results #### **Stress Relieving** - **Temperature**: 650-680°C (1200-1255°F) - **Hold Time**: 1.5-2 hours per inch of thickness - **Cooling**: Slow furnace cool to 500°C (930°F) #### **Hardening (Optimized for PM Structure)** 1. **Preheating**: **Double preheat essential**
• First: 750-800°C (1380-1470°F) – thorough equalization
• Second: 980-1010°C (1795-1850°F) – complete conditioning 2. **Austenitizing**: **1200-1220°C (2190-2225°F)** – typically 10-15°C lower than conventional M3-2 3. **Soak Time**: 2-4 minutes per inch – reduced due to fine carbide structure 4. **Quenching**: Oil or salt bath preferred; high-pressure gas quenching suitable for complex geometry 5. **Immediate Handling**: Cool to 50-65°C (120-150°F) before tempering #### **Tempering (Critical for Performance Optimization)** - **Temperature Range**: 540-570°C (1005-1060°F) - **Cycles**: **Triple tempering minimum** – quadruple recommended for maximum toughness - **Duration**: 2 hours per cycle minimum - **Target Hardness**: 66-68 HRC typically at 540-550°C (1005-1020°F) - **Special Note**: PM materials often show more complete secondary hardening response #### **Sub-Zero Treatment (Recommended)** - **Temperature**: -100 to -120°C (-148 to -184°F) - **Duration**: 3-4 hours - **Timing**: After quenching, before first temper - **Benefit**: Maximizes dimensional stability and hardness --- ### **International Standards & Equivalent Grades** | Standard | Grade Designation | Notes | |----------|-------------------|-------| | **ASTM** | A600 M3 Class 2 (PM) | Primary chemistry specification | | **ISO** | HS6-5-3 (PM) | ISO 4957 PM designation | | **DIN** | 1.3344 PM | German PM standard reference | | **Proprietary** | DuraTech™ 30 PM | Latrobe Special Steel PM designation | | **Similar PM Grades** | ASP® 2023, CPM® M3-2 | Competitive PM-HSS grades | | **MPIF** | Not standardized | Metal Powder Industries Federation | --- ### **Typical Applications** #### **High-Performance Cutting Tools** - **Premium End Mills**: For machining stainless steels, high-temperature alloys, and abrasive composites requiring toughness-wear balance - **Drills & Reamers**: High-performance twist drills and precision reamers for difficult materials - **Threading Tools**: Taps and thread mills for production machining where breakage resistance is critical - **Gear Manufacturing**: Hobs and shaper cutters for hardened gear materials - **Form Tools**: Complex shaped tools requiring both wear resistance and toughness - **Broaches**: Precision broaches benefiting from enhanced transverse strength #### **Specialized Tooling and Wear Components** - **Cold Forming Tools**: Punches, dies, and headers requiring impact resistance with wear life - **Fine Blanking Tools**: Punches and dies for abrasive sheet materials - **Injection Molding**: Cores, cavities, and inserts for abrasive filled plastics - **Extrusion Tools**: Dies and liners for abrasive materials requiring thermal fatigue resistance - **Knives & Blades**: Industrial cutting blades for mixed material applications #### **Industry-Specific Applications** - **Aerospace**: Machining titanium alloys, Inconel, and composite materials - **Automotive**: Tools for hardened transmission components and engine parts - **Medical Device**: Surgical instruments and cutting tools requiring reliability - **Energy Sector**: Tools for valve components and turbine parts - **General Machining**: Premium tools for job shops and production environments --- ### **Machining & Fabrication Notes** #### **Machinability (Annealed Condition)** - **Rating**: 40-50% of B1112 free-machining steel - **Recommended Tools**: **Carbide tools required** – premium grades recommended - **Cutting Speeds**: 8-12 m/min (25-40 SFM) for turning operations - **Feed Rates**: Light to moderate feeds - **Coolant**: High-performance synthetic coolant essential - **Advantage**: More consistent machining than conventional M3-2 due to uniform structure #### **Grindability** - **Relative Rating**: 45-55 (vs. 100 for annealed O1 tool steel) – **significantly better than conventional M3-2** - **Abrasive Requirements**: CBN or diamond wheels recommended; premium aluminum oxide acceptable - **Wheel Maintenance**: Reduced dressing frequency compared to conventional M3-2 - **Coolant**: Flood coolant essential - **Key Advantage**: 30-50% improved grindability over conventional M3-2 #### **EDM Machining** - Excellent suitability for both wire and sinker EDM - Consistent material removal rates - Fine surface finish achievable - Reduced white layer thickness compared to conventional steels #### **Polishing & Finishing** - Superior final finish achievable (typically Ra < 0.05 µm) - Reduced polishing time due to fine, homogeneous microstructure - Excellent for precision mold and die applications --- ### **Quality Assurance & Metallurgical Standards** #### **Microstructural Requirements** - **Carbide Size**: Maximum 3 µm (typically 1-2.5 µm) - **Carbide Distribution**: Uniform, no segregation or carbide networks - **Porosity**: ≤ 0.5% (Class 1 per ASTM B328) - **Grain Size**: Extremely fine, typically ASTM 12 or finer - **Inclusion Rating**: Extremely clean – typically ≤ 0.5 total (ASTM E45) - **Isotropy**: Properties uniform in all directions (transverse/longitudinal ratio >0.95) #### **Testing & Certification** - Complete chemical analysis with trace element control - Density measurement per ASTM B311 - Microstructural analysis with carbide size/distribution quantification - Transverse rupture strength testing (longitudinal and transverse) - Hardness testing throughout heat treatment cycle - Non-destructive testing available (UT, MPI) - Full traceability from powder lot to finished product - Certified test reports with micrographs and mechanical property data --- ### **Available Product Forms** | Form | Standard Sizes | Condition | Surface Finish | Notes | |------|---------------|-----------|----------------|-------| | **PM Billets** | 100-350mm diameter | Annealed | As-HIPped, Machined | Hot Isostatically Pressed | | **PM Bars** | 20-200mm diameter | Annealed | Ground, Polished | Centerless ground available | | **PM Blocks** | Up to 400×400×600mm | Annealed | Machined surfaces | For large mold/die applications | | **Near-Net Shapes** | Custom dimensions | As-HIPped | As-sintered surface | Reduced machining requirements | | **PM Forged Stock** | Limited sizes | Annealed | As-forged | Enhanced properties | | **PM Plate** | Up to 100mm thick | Annealed | Ground | For wear plate applications | --- ### **Technical Comparison: PM vs. Conventional M3-2** | Property | DuraTech™ 30 PM | Conventional M3-2 | Improvement | |----------|-----------------|-------------------|-------------| | **Maximum Carbide Size** | 1-3 µm | 8-12 µm | 70-80% finer | | **Transverse Strength** | 4,200-5,000 MPa | 3,000-3,600 MPa | 35-40% higher | | **Impact Toughness** | 45-65 J | 25-35 J | 50-85% higher | | **Wear Resistance** | **Excellent** | Very Good | 20-40% better | | **Grindability** | Moderate | Difficult | 30-50% better | | **Isotropy** | **Excellent** | Fair | Dramatic improvement | | **Polishability** | **Superior** | Good | Significant improvement | | **Cost Premium** | 40-80% | Baseline | - | --- ### **Coating Compatibility** DuraTech™ 30 PM provides an exceptional substrate for advanced coatings: - **PVD Coatings**: TiAlN, AlCrN, AlTiN, TiSiN – excellent adhesion and performance - **CVD Coatings**: TiC, TiCN, Al₂O₃ – good compatibility with proper pretreatment - **Special Advantage**: Ultra-fine, clean surface enhances coating adhesion and uniformity - **Pre-treatment**: Standard polishing yields superior surface (typically Ra < 0.1 µm) - **Performance**: Coated tools typically show 100-300% life improvement in appropriate applications --- ### **Economic Considerations** 1. **Material Cost**: 40-80% premium over conventional M3-2 2. **Tool Life**: Typically 50-150% improvement in wear applications 3. **Fabrication Cost**: Reduced grinding time (20-40% savings) and improved yields 4. **Performance Value**: Justified for critical applications and high-value tools 5. **Total Cost of Ownership**: Often significantly lower due to extended service life 6. **Scrap Reduction**: Improved consistency reduces manufacturing waste --- ### **Design and Application Guidelines** 1. **Optimal Applications**: Where both wear resistance and toughness are critical 2. **Complex Geometries**: PM process enables intricate shapes through near-net forming 3. **Large Cross-Sections**: Uniform properties maintained in large dimensions 4. **Precision Components**: Superior dimensional stability during heat treatment 5. **Critical Wear Parts**: Where reliability and consistency are paramount --- ### **Special Considerations for PM Materials** 1. **Heat Treatment**: Modified parameters required – consult technical data 2. **Machining**: Different optimal parameters than conventional materials 3. **Design Freedom**: Enables complex geometries not possible with wrought materials 4. **Quality Assurance**: Enhanced testing and certification available 5. **Technical Support**: Specialized expertise recommended for optimal results --- ### **Storage & Handling** 1. **Storage Conditions**: Dry, controlled environment (humidity <50% RH) 2. **Corrosion Protection**: Standard rust preventive adequate for moderate storage periods 3. **Handling**: Standard material handling procedures apply 4. **Identification**: Clearly marked as PM material with full traceability 5. **Documentation**: Complete certification package including microstructural analysis --- **Select Latrobe DuraTech™ 30 Powder Metallurgy High Speed Steel** when conventional M3-2 cannot meet the combined demands of wear resistance and toughness in your application. This advanced PM-HSS delivers revolutionary improvements through its ultra-fine, homogeneous microstructure, offering exceptional performance where traditional tool steels compromise between wear resistance and impact strength. For applications requiring reliable performance in demanding conditions, DuraTech™ 30 provides a superior solution that extends tool life, improves manufacturing efficiency, and reduces total operating costs. When the optimal balance of wear resistance and toughness is required for critical applications, DuraTech™ 30 represents the pinnacle of modern tool steel technology. -:- For detailed product information, please contact sales. -: Latrobe DuraTech™ 30 Powder Metal High Speed Steel (ASTM M3-2) Specification Dimensions Size： Diameter 20-1000 mm Length <7161 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 DuraTech™ 30 Powder Metal High Speed Steel (ASTM M3-2) Properties -:- For detailed product information, please contact sales. -:

Applications of Latrobe DuraTech™ 30 Powder Metal High Speed Steel Tube (ASTM M3-2) -:- For detailed product information, please contact sales. -: Chemical Identifiers Latrobe DuraTech™ 30 Powder Metal High Speed Steel Tube (ASTM M3-2) -:- For detailed product information, please contact sales. -:

Packing of Latrobe DuraTech™ 30 Powder Metal High Speed Steel Tube (ASTM M3-2) -:- 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 Tube 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 3632 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