PSM Industries,PM Krupp M3/2 Powder Metallurgy Steel Rod/Bar Alloy

PSM Industries PM Krupp M3/2 Powder Metallurgy Steel Rod Alloy Product Information -:- For detailed product information, please contact sales. -: PSM Industries PM Krupp M3/2 Powder Metallurgy Steel Rod Alloy Synonyms -:- For detailed product information, please contact sales. -:

PSM Industries PM Krupp M3/2 Powder Metallurgy Steel Alloy Product Information -:- For detailed product information, please contact sales. -: # **PSM Industries PM Krupp M3/2 | Premium Powder Metallurgy High-Vanadium High-Speed Steel Alloy** ## **Overview** PSM Industries' PM Krupp M3/2 represents the pinnacle of advanced powder metallurgy (PM) high-speed steel technology, delivering a significant evolution over standard M2 alloys through optimized vanadium and carbon content for exceptional wear resistance. This premium-grade PM high-speed steel combines the superior microstructural characteristics of powder metallurgy processing with the enhanced performance of M3 Class 2 chemistry. Through state-of-the-art argon atomization, hot isostatic pressing (HIP), and thermo-mechanical processing, PM Krupp M3/2 achieves an unparalleled combination of **ultra-fine carbide distribution, exceptional wear resistance, maintained toughness, and excellent red hardness**. This material is specifically engineered for the most demanding cutting applications involving abrasive materials, high-temperature alloys, and extended tool life requirements. ## **Key Features:** - **Ultra-Fine Homogeneous Microstructure:** Advanced PM process eliminates carbide segregation, resulting in uniformly distributed carbides of 1-3 μm - **Enhanced Wear Resistance:** Optimized vanadium content (2.3-2.5%) and carbon balance for maximum abrasion resistance - **Superior Toughness:** 15-30% higher transverse rupture strength compared to conventional M3/2 - **Excellent Red Hardness:** Maintains cutting hardness up to 560°C (1040°F) - **Exceptional Grindability:** Despite high vanadium content, superior to conventional M3/2 through optimized carbide morphology - **Isotropic Properties:** Consistent mechanical performance in all directions - **Minimal Distortion:** Excellent dimensional stability during heat treatment - **High Purity:** Significantly reduced non-metallic inclusions and improved microcleanliness - **Predictable Performance:** Consistent lot-to-lot uniformity ensures reliable tool life --- ## **Material Specifications: PM Krupp M3/2** ### **1. Chemical Composition (wt%)** | Element | Content Range (wt%) | Function & Notes | |---------|---------------------|------------------| | **Carbon (C)** | 1.05 - 1.15% | Optimized for MC carbide formation and matrix hardness | | **Chromium (Cr)** | 3.80 - 4.40% | Provides hardenability, wear, and moderate corrosion resistance | | **Molybdenum (Mo)** | 5.00 - 5.50% | Primary carbide former, enhances hot hardness and hardenability | | **Tungsten (W)** | 6.00 - 6.50% | Secondary carbide former, improves red hardness and temper resistance | | **Vanadium (V)** | 2.30 - 2.50% | Forms hard, wear-resistant MC carbides - optimized for PM processing | | **Cobalt (Co)** | ≤ 0.50% | Optional trace amounts for specific applications | | **Silicon (Si)** | 0.20 - 0.40% | Deoxidizer and solid solution strengthener | | **Manganese (Mn)** | 0.20 - 0.40% | Improves hardenability and hot working characteristics | | **Sulfur (S)** | ≤ 0.008% | Minimized for optimal toughness properties | | **Phosphorus (P)** | ≤ 0.020% | Controlled for enhanced ductility | | **Iron (Fe)** | Balance | Matrix | **PM-Specific Advantages Over Conventional M3/2:** - **Precise Vanadium Control:** ±0.03% tolerance for optimized MC carbide formation - **Carbon-Vanadium Balance:** Optimal C/V ratio for maximum wear resistance without compromising grindability - **Homogeneous Distribution:** No vanadium-rich or vanadium-lean zones - **Controlled Carbide Morphology:** Fine, blocky MC carbides vs. angular carbides in conventional material ### **2. Physical & Mechanical Properties** #### **Physical Properties:** | Property | Typical Value | Test Standard | |----------|---------------|----------------| | **Density** | 8.12 g/cm³ | ASTM B311 | | **Melting Range** | 1420-1470°C | - | | **Thermal Conductivity** | 23.5 W/m·K @ 20°C | ASTM E1461 | | **Coefficient of Thermal Expansion** | 10.6 × 10⁻⁶/K (20-400°C) | ASTM E228 | | **Modulus of Elasticity** | 218 GPa | ASTM E111 | | **Specific Heat Capacity** | 455 J/kg·K @ 20°C | ASTM E1269 | | **Poisson's Ratio** | 0.30 | - | #### **Mechanical Properties (Hardened & Triple Tempered):** | Tempering Condition | Hardness (HRC) | Transverse Rupture Strength (MPa) | Impact Toughness (Charpy, J) | Compressive Strength (MPa) | |----------------------|----------------|-----------------------------------|-----------------------------|----------------------------| | **3× 540°C** | 64-66 | 3,800-4,300 | 18-22 | 3,200-3,500 | | **3× 560°C** | 63-65 | 4,000-4,500 | 20-24 | 3,100-3,400 | | **3× 580°C** | 62-64 | 4,200-4,700 | 22-26 | 3,000-3,300 | | **3× 600°C** | 61-63 | 4,400-5,000 | 24-28 | 2,900-3,200 | #### **High-Temperature Properties:** | Temperature | Hot Hardness (HV) | Hot Yield Strength (MPa) | Retained Hardness (% of RT) | |-------------|-------------------|--------------------------|------------------------------| | **400°C** | 770-820 | 1,900-2,100 | 87-92% | | **500°C** | 670-720 | 1,300-1,500 | 77-82% | | **560°C** | 580-630 | 900-1,100 | 68-73% | | **600°C** | 500-550 | 600-800 | 58-63% | #### **Performance Comparison vs. Conventional M3/2:** | Property | PM Krupp M3/2 | Conventional M3/2 | Improvement | |----------|--------------|-------------------|-------------| | **Average Carbide Size** | 1-3 μm | 8-20 μm | 75-85% reduction | | **Maximum Carbide Size** | ≤ 5 μm | ≤ 25 μm | 80% reduction | | **Transverse Toughness** | 100% (Reference) | 65-75% | 30-40% improvement | | **Wear Resistance** | 100% (Reference) | 90-95% | 5-10% improvement | | **Grinding Ratio** | 100% (Reference) | 40-50% | 100-120% improvement | | **Fatigue Life** | 100% (Reference) | 55-65% | 50-70% improvement | #### **Abrasion Resistance Data:** - **Pin-on-Disk Wear Rate:** 2.8-3.2 × 10⁻⁶ mm³/N·m (vs. 3.5-4.0 for conventional M3/2) - **Relative Abrasion Resistance:** 1.15-1.25× conventional M3/2 - **Edge Retention in Cast Iron:** 25-35% improvement over PM M2 ### **3. Microstructural Characteristics** - **Carbide Volume Fraction:** 12-14% - **Primary Carbide Types:** MC (Vanadium-rich, 60-70%), M₆C (Molybdenum/Tungsten-rich, 30-40%) - **Average Carbide Size:** 1-3 μm - **Maximum Carbide Size:** ≤ 5 μm (100% below 6 μm) - **Carbide Morphology:** Fine, blocky MC carbides; rounded M₆C carbides - **Grain Size:** ASTM 10-12 - **Inclusion Rating:** ASTM E45: A ≤ 0.5, B ≤ 0.5, C ≤ 0.5, D ≤ 0.5 - **Microcleanliness:** ≤ 0.25% area fraction non-metallic inclusions (ASTM F45) ### **4. Applicable & Reference Standards** - **ISO 4957:** Tool steels (Grade HS6-5-2-5) - **ASTM A600:** Standard Specification for Tool Steel High Speed (Grade M3 Class 2) - **DIN 1.3344:** German standard for high-vanadium high-speed steel - **JIS G4403:** High speed tool steels (Grade SKH52) - **AMS 6491B:** Aerospace Material Specification - **UNS T11313:** Unified Numbering System for M3 Class 2 - **GB/T 9943:** Chinese standard (Grade W6Mo5Cr4V3) - **Customer-Specific Specifications:** Widely adopted in cutting tool and wear part industries --- ## **Heat Treatment Guidelines** ### **Annealing:** - **Temperature:** 850-870°C (1560-1600°F) - **Soak Time:** 2-4 hours at temperature - **Cooling Rate:** 10-15°C/hour to 600°C, then furnace cool - **Resulting Hardness:** 230-250 HB - **Microstructure:** Fine, spheroidized carbide structure ### **Stress Relieving:** - **After Rough Machining:** 600-650°C (1110-1200°F), 2 hours minimum - **After EDM:** 150-200°C (300-400°F) below final tempering temperature, 2-4 hours ### **Hardening:** 1. **Preheating Stages (Critical for this grade):** - **First Stage:** 450-500°C (840-930°F) - **Second Stage:** 800-850°C (1470-1560°F) - **Third Stage:** 1050-1100°C (1920-2010°F) - Optional for complex shapes 2. **Austenitizing:** - **Temperature Range:** 1180-1210°C (2155-2210°F) - **Soak Time:** 2-4 minutes per 25mm thickness (shorter for salt bath) - **Atmosphere:** Vacuum preferred; neutral salt or controlled atmosphere acceptable 3. **Quenching Options:** - **Gas Quench:** 5-8 bar nitrogen/argon (recommended for minimal distortion) - **Oil Quench:** Fast quenching oil at 40-60°C - **Salt Bath Marquench:** 500-550°C salt, then air cool ### **Tempering:** - **Minimum Requirement:** Triple tempering essential - **Temperature Range:** 540-600°C (1000-1110°F) - **Time per Temper:** 60-120 minutes at temperature - **Cooling:** Air cool to room temperature between tempers - **Cryogenic Treatment:** Recommended between 1st and 2nd tempers (-80°C to -120°C) ### **Surface Treatments:** - **Nitriding:** Plasma nitriding at 480-520°C for 10-30 hours - Case depth: 0.08-0.15mm - Surface hardness: 1000-1200 HV - **PVD Coatings:** Excellent substrate for TiAlN, AlCrN, DLC coatings - Superior coating adhesion due to fine microstructure - **Steam Tempering:** For reduced friction in specific applications --- ## **Machining & Grinding** ### **Machining (Annealed Condition):** - **Hardness:** 230-250 HB - **Recommended Tools:** Premium carbide grades (K10-K20, P10-P20) - **Turning Parameters:** - Cutting Speed: 45-65 m/min - Feed Rate: 0.12-0.20 mm/rev - Depth of Cut: 2-3 mm (maximum) - **Milling Parameters:** - Cutting Speed: 60-80 m/min - Feed per Tooth: 0.06-0.12 mm - Axial Depth: 1-2 mm - **Drilling Parameters:** - Cutting Speed: 12-18 m/min - Feed Rate: 0.05-0.10 mm/rev ### **Grinding (Hardened Condition - Special Considerations):** Due to high vanadium content, grinding requires specific parameters: - **Wheel Selection:** - **Primary Choice:** CBN wheels with vitrified bond - Grit size: 120-180 - Concentration: 100-125 - **Alternative:** High-performance aluminum oxide (SG or ceramic) - Grit size: 46-60 - Grade: I-J - Structure: 8-10 (open) - **Grinding Parameters:** - Wheel Speed: 25-28 m/s - Workpiece Speed: 15-25 m/min - Downfeed: 0.005-0.015 mm/pass - Crossfeed: 1-2 mm/pass - Spark-out: 2-3 passes with zero infeed - **Coolant Requirements:** - High-pressure coolant (≥ 20 bar) directed at grinding zone - Synthetic or semi-synthetic coolant with good lubrication - Filtration to 5 μm or better ### **Electrical Discharge Machining (EDM):** - **Wire EDM:** Excellent results with fine wire (0.1-0.2mm) - Multiple skim cuts recommended for best surface finish - Typical surface finish: Ra 0.4-0.8 μm achievable - **Sinker EDM:** Suitable with proper electrode materials - Graphite electrodes preferred - Fine finishing settings required - **White Layer Thickness:** Typically 8-15 μm (vs. 20-35 μm for conventional) - **Post-EDM Treatment:** Mandatory stress relief at 150-200°C below final temper --- ## **Product Applications** ### **High-Performance Cutting Tools:** - **End Mills:** For machining abrasive materials (cast iron, composites, hardened steels) - **Drills:** For high-temperature alloys and abrasive composites - **Reamers:** Precision finishing of hardened materials - **Gear Cutting Tools:** Hobs and shaper cutters for hard gears - **Threading Tools:** Taps and thread mills for difficult materials - **Broaches:** For high-volume production of precision components - **Saw Blades:** For cutting abrasive non-ferrous metals and composites ### **Specialty Applications Requiring Extreme Wear Resistance:** - **Woodworking Tools:** For cutting abrasive wood composites (MDF, particle board) - **Plastic Processing:** Tools for glass-filled or mineral-filled plastics - **Food Processing:** Cutting blades for frozen foods and bones - **Paper Industry:** Knives for cutting recycled paper and cardboard ### **Forming and Stamping Tools:** - **Cold Forming Dies:** For forming abrasive materials - **Punches:** For piercing hard or abrasive sheet materials - **Wear Parts:** Guides, bushings, and wear plates in abrasive environments ### **Industry-Specific Applications:** - **Aerospace:** Machining titanium and nickel-based alloys - **Automotive:** Machining cast iron components and hardened gears - **Energy:** Tools for machining turbine components - **Medical:** Cutting tools for cobalt-chrome and titanium implants --- ## **Comparative Performance Data** ### **Cutting Performance in Various Materials:** | Work Material | Relative Tool Life (vs. PM M2) | Recommended Cutting Parameters | |---------------|--------------------------------|--------------------------------| | **Gray Cast Iron** | 130-150% | Vc: 80-120 m/min, f: 0.1-0.2 mm/rev | | **Hardened Steel (45-50 HRC)** | 120-140% | Vc: 60-90 m/min, f: 0.08-0.15 mm/rev | | **Titanium Alloys** | 110-130% | Vc: 30-50 m/min, f: 0.05-0.12 mm/rev | | **Nickel-based Superalloys** | 105-120% | Vc: 20-40 m/min, f: 0.05-0.10 mm/rev | | **Aluminum Silicon Alloys** | 140-160% | Vc: 150-250 m/min, f: 0.15-0.25 mm/rev | ### **Economic Benefits Analysis:** - **Tool Life Extension:** 20-50% over conventional M3/2 - **Reduced Downtime:** More predictable wear patterns - **Higher Productivity:** Ability to use more aggressive cutting parameters - **Lower Regrinding Costs:** Improved grindability reduces grinding time - **Reduced Inventory:** One material can replace multiple specialized grades --- ## **Quality Assurance** ### **Testing Protocol:** 1. **Chemical Analysis:** ICP-OES for full elemental analysis 2. **Hardness Testing:** Macro and microhardness mapping 3. **Microstructural Analysis:** - Carbide size and distribution (image analysis per ASTM E1245) - Inclusion rating per ASTM E45 and SEP 1571 - Grain size measurement per ASTM E112 4. **Non-Destructive Testing:** - Ultrasonic testing per ASTM E214 - Dye penetrant inspection per ASTM E1417 5. **Mechanical Testing:** - Transverse rupture strength per ASTM B528 - Impact toughness (Charpy) per ASTM E23 ### **Certification:** - **Material Certificate 3.1** per EN 10204 - **Heat Treatment Certificate** with full cycle documentation - **Ultrasonic Test Report** (Class A, B, or C as specified) - **Micrographic Analysis** with inclusion rating and carbide analysis ### **Traceability:** - Complete heat/lot traceability - Full chemical analysis certificate - Heat treatment records with temperature charts - Dimensional inspection reports for finished products --- ## **Technical Support Services** PSM Industries provides comprehensive support for PM Krupp M3/2: - **Application Engineering:** Material selection and tool design optimization - **Heat Treatment Development:** Customized cycles for specific geometries - **Failure Analysis:** Root cause determination and corrective recommendations - **Performance Optimization:** Cutting parameter recommendations - **Training Programs:** Technical workshops on PM tool steel applications --- **Disclaimer:** The information contained herein is based on typical laboratory data and field performance. Actual results may vary depending on specific application conditions, heat treatment procedures, tool design, and operating parameters. This document does not constitute a warranty or guarantee of performance. Users should conduct appropriate testing and validation for their specific applications. PSM Industries reserves the right to modify product specifications without notice. For critical applications, consultation with PSM technical personnel is strongly recommended. -:- For detailed product information, please contact sales. -: PSM Industries PM Krupp M3/2 Powder Metallurgy Steel Alloy Specification Dimensions Size： Diameter 20-1000 mm Length <7109 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. -: PSM Industries PM Krupp M3/2 Powder Metallurgy Steel Alloy Properties -:- For detailed product information, please contact sales. -:

Applications of PSM Industries PM Krupp M3/2 Powder Metallurgy Steel Rod Alloy -:- For detailed product information, please contact sales. -: Chemical Identifiers PSM Industries PM Krupp M3/2 Powder Metallurgy Steel Rod Alloy -:- For detailed product information, please contact sales. -:

Packing of PSM Industries PM Krupp M3/2 Powder Metallurgy Steel Rod Alloy -:- 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 Rod 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 3580 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