PSM Industries,PM Krupp T15 Powder Metallurgy Steel Wire Alloy

PSM Industries PM Krupp T15 Powder Metallurgy Steel Wire Alloy Product Information -:- For detailed product information, please contact sales. -: PSM Industries PM Krupp T15 Powder Metallurgy Steel Wire Alloy Synonyms -:- For detailed product information, please contact sales. -:

PSM Industries PM Krupp T15 Powder Metallurgy Steel Alloy Product Information -:- For detailed product information, please contact sales. -: # **PSM Industries PM Krupp T15 | Premium Powder Metallurgy Cobalt-Bearing High-Speed Steel Alloy** ## **Overview** PSM Industries' PM Krupp T15 represents the ultimate achievement in powder metallurgy (PM) high-speed steel technology, delivering unparalleled performance for the most demanding high-temperature and heavy-duty machining applications. As a PM-processed evolution of the legendary cobalt-bearing T15 (AISI T15 / 1.3265) high-speed steel, this alloy combines exceptionally high vanadium content with strategic cobalt additions through state-of-the-art argon atomization and hot isostatic pressing (HIP) technologies. PM Krupp T15 is engineered specifically for applications requiring maximum red hardness, superior wear resistance at elevated temperatures, and exceptional performance in heavy interrupted cutting operations where conventional high-speed steels fail prematurely. ## **Key Features:** - **Exceptional Red Hardness:** High cobalt content (4.75-5.25%) provides superior hot hardness retention up to 600°C (1112°F) - **Extreme Wear Resistance:** Very high vanadium content (4.50-5.00%) creates maximum volume of ultra-hard MC carbides - **Ultra-Fine Homogeneous Microstructure:** PM processing eliminates carbide segregation, producing uniformly distributed carbides of 1-3 μm - **Superior High-Temperature Strength:** Maintains mechanical properties at temperatures where other HSS grades soften - **Excellent Thermal Fatigue Resistance:** Withstands severe thermal cycling in interrupted cutting applications - **Perfect Isotropy:** Identical mechanical properties in all directions - **Minimal Distortion:** Exceptional dimensional stability during complex heat treatments - **High Purity:** Significantly reduced non-metallic inclusions and microstructural defects - **Predictable Performance:** Consistent lot-to-lot uniformity ensures reliable tool life in critical applications --- ## **Material Specifications: PM Krupp T15** ### **1. Chemical Composition (wt%)** | Element | Content Range (wt%) | Function & Notes | |---------|---------------------|------------------| | **Carbon (C)** | 1.50 - 1.60% | Optimized for maximum MC and M₆C carbide formation | | **Tungsten (W)** | 12.00 - 13.00% | Primary carbide former, provides exceptional red hardness | | **Chromium (Cr)** | 4.00 - 4.50% | Provides hardenability and oxidation resistance | | **Vanadium (V)** | 4.50 - 5.00% | Forms ultra-hard MC carbides for extreme wear resistance | | **Cobalt (Co)** | 4.75 - 5.25% | Enhances hot hardness, temper resistance, and thermal conductivity | | **Molybdenum (Mo)** | ≤ 0.50% | Controlled minimal content (traditional T15 characteristic) | | **Silicon (Si)** | 0.15 - 0.30% | Deoxidizer, minimized for optimal toughness | | **Manganese (Mn)** | 0.15 - 0.30% | Improves hardenability, controlled for optimal properties | | **Sulfur (S)** | ≤ 0.005% | Minimized for optimal toughness properties | | **Phosphorus (P)** | ≤ 0.015% | Minimized for enhanced ductility | | **Iron (Fe)** | Balance | Matrix | **PM-Specific Advantages Over Conventional T15:** - **Optimal Cobalt Distribution:** Homogeneous cobalt distribution throughout matrix - **Controlled Carbide Morphology:** Fine, blocky MC and M₆C carbides vs. large, angular carbides in conventional material - **No Elemental Segregation:** Complete elimination of tungsten and vanadium-rich zones - **Enhanced Toughness:** 25-40% improvement in transverse rupture strength despite high carbide volume ### **2. Physical & Mechanical Properties** #### **Physical Properties:** | Property | Typical Value | Test Standard | |----------|---------------|----------------| | **Density** | 8.30 g/cm³ | ASTM B311 | | **Melting Range** | 1430-1480°C | - | | **Thermal Conductivity** | 25.5 W/m·K @ 20°C | ASTM E1461 | | **Coefficient of Thermal Expansion** | 11.0 × 10⁻⁶/K (20-400°C) | ASTM E228 | | **Modulus of Elasticity** | 225 GPa | ASTM E111 | | **Specific Heat Capacity** | 440 J/kg·K @ 20°C | ASTM E1269 | | **Electrical Resistivity** | 0.65 μΩ·m @ 20°C | ASTM B193 | #### **Mechanical Properties (Hardened & Triple Tempered):** | Tempering Condition | Hardness (HRC) | Transverse Rupture Strength (MPa) | Impact Toughness (Charpy, J) | Compressive Strength (MPa) | |----------------------|----------------|-----------------------------------|-----------------------------|----------------------------| | **3× 550°C** | 66-68 | 3,200-3,700 | 12-15 | 3,500-3,800 | | **3× 570°C** | 65-67 | 3,400-3,900 | 14-17 | 3,400-3,700 | | **3× 590°C** | 64-66 | 3,600-4,100 | 16-19 | 3,300-3,600 | | **3× 610°C** | 63-65 | 3,800-4,300 | 18-21 | 3,200-3,500 | #### **High-Temperature Properties (Exceptional Feature):** | Temperature | Hot Hardness (HV) | Hot Yield Strength (MPa) | Retained Hardness (% of RT) | |-------------|-------------------|--------------------------|------------------------------| | **500°C** | 700-750 | 1,500-1,700 | 80-85% | | **550°C** | 650-700 | 1,200-1,400 | 75-80% | | **600°C** | 600-650 | 900-1,100 | 70-75% | | **650°C** | 500-550 | 600-800 | 60-65% | *Note: Retains approximately 10-15% higher hardness at elevated temperatures compared to non-cobalt grades* #### **Performance Comparison vs. Conventional T15:** | Property | PM Krupp T15 | Conventional T15 | Improvement | |----------|-------------|-----------------|-------------| | **Average Carbide Size** | 1-3 μm | 12-35 μm | 80-90% reduction | | **Maximum Carbide Size** | ≤ 5 μm | ≤ 45 μm | 85-90% reduction | | **Transverse Toughness** | 100% (Reference) | 55-65% | 50-70% improvement | | **Wear Resistance** | 100% (Reference) | 85-90% | 10-15% improvement | | **Grinding Ratio** | 100% (Reference) | 25-35% | 180-220% improvement | | **Fatigue Life at 500°C** | 100% (Reference) | 45-55% | 80-100% improvement | #### **Abrasion & Wear Resistance Data:** - **Pin-on-Disk Wear Rate:** 2.2-2.6 × 10⁻⁶ mm³/N·m (vs. 3.0-3.5 for conventional T15) - **Relative Abrasion Resistance:** 1.25-1.35× conventional T15 - **Edge Retention in Superalloys:** 40-50% improvement over PM M4 - **Wear Resistance at 500°C:** 1.50-1.70× PM M4 at same temperature ### **3. Microstructural Characteristics** - **Carbide Volume Fraction:** 18-22% (exceptionally high) - **Primary Carbide Types:** MC (Vanadium-rich, 60-70%), M₆C (Tungsten-rich, 30-40%) - **Average Carbide Size:** 1-3 μm - **Maximum Carbide Size:** ≤ 5 μm (100% below 7 μm) - **Carbide Morphology:** Fine, blocky MC carbides; rounded M₆C carbides - **Cobalt Distribution:** Homogeneous in solid solution (not in carbides) - **Grain Size:** ASTM 10-11 - **Inclusion Rating:** ASTM E45: A ≤ 0.5, B ≤ 0.5, C ≤ 0.5, D ≤ 0.5 - **Microcleanliness:** ≤ 0.15% area fraction non-metallic inclusions (ASTM F45) ### **4. Applicable & Reference Standards** - **ISO 4957:** Tool steels (Grade HS12-1-5-5) - **ASTM A600:** Standard Specification for Tool Steel High Speed (Grade T15) - **DIN 1.3265:** German standard for cobalt-bearing high-speed steel - **JIS G4403:** High speed tool steels (Grade SKH10) - **AMS 6491D:** Aerospace Material Specification - **UNS T12015:** Unified Numbering System for T15 - **GB/T 9943:** Chinese standard (Grade W12Cr4V5Co5) - **Customer-Specific Specifications:** Widely adopted in aerospace, energy, and heavy machining industries --- ## **Heat Treatment Guidelines** ### **Annealing:** - **Temperature:** 850-870°C (1560-1600°F) - **Soak Time:** 3-5 hours at temperature (longer than lower-alloy grades) - **Cooling Rate:** 8-12°C/hour to 600°C, then furnace cool - **Resulting Hardness:** 260-290 HB - **Microstructure:** Fine, spheroidized carbide structure ### **Stress Relieving:** - **After Rough Machining:** 600-650°C (1110-1200°F), 2-3 hours minimum - **After EDM:** 150-200°C (300-400°F) below final tempering temperature, 3-4 hours ### **Hardening:** 1. **Preheating Stages (Critical for this high-tungsten 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) - Essential for complex shapes 2. **Austenitizing:** - **Temperature Range:** 1220-1250°C (2225-2280°F) - **Soak Time:** 2-5 minutes per 25mm thickness - **Atmosphere:** Vacuum essential; neutral salt acceptable with extreme caution 3. **Quenching Options:** - **Gas Quench:** 8-12 bar nitrogen/argon (highly recommended) - **Salt Bath Marquench:** 550-600°C salt, then air cool - **Oil Quench:** Not recommended due to high cracking risk ### **Tempering:** - **Minimum Requirement:** Triple tempering essential, quadruple strongly recommended - **Temperature Range:** 550-620°C (1020-1150°F) - **Time per Temper:** 90-150 minutes at temperature (minimum 2.5 hours total per temper) - **Cooling:** Air cool to room temperature between tempers - **Cryogenic Treatment:** Essential between 1st and 2nd tempers (-80°C to -120°C for 3-6 hours) ### **Surface Treatments:** - **Nitriding:** Plasma nitriding at 480-520°C for 6-20 hours - Case depth: 0.04-0.10mm (limited by high alloy content) - Surface hardness: 1200-1400 HV - **PVD Coatings:** Excellent substrate for AlTiN, AlCrN, SiN coatings - Pre-treatment plasma etching essential - Coating adhesion superior to conventional T15 - **Steam Tempering/Oxidation:** For reduced friction and improved chip flow --- ## **Machining & Grinding** ### **Machining (Annealed Condition):** - **Hardness:** 260-290 HB (difficult to machine) - **Recommended Tools:** Premium carbide grades (K01-K10, P01-P10) or PCD for finishing - **Turning Parameters:** - Cutting Speed: 30-50 m/min - Feed Rate: 0.08-0.15 mm/rev - Depth of Cut: 1.0-2.0 mm (maximum) - **Milling Parameters:** - Cutting Speed: 40-60 m/min - Feed per Tooth: 0.04-0.08 mm - Axial Depth: 0.5-1.5 mm - **Drilling Parameters:** - Cutting Speed: 8-12 m/min - Feed Rate: 0.03-0.06 mm/rev ### **Grinding (Hardened Condition - Specialized Process Required):** Due to extremely high tungsten and vanadium content, grinding requires optimized parameters: - **Wheel Selection:** - **Primary Choice:** Diamond wheels with metal or vitrified bond - Grit size: 100-200 - Concentration: 75-100 - Bond: Metal bond for roughing, vitrified for finishing - **Alternative:** High-performance CBN wheels - Grit size: 120-180 - Concentration: 100-125 - **Grinding Parameters:** - Wheel Speed: 20-25 m/s (diamond), 25-30 m/s (CBN) - Workpiece Speed: 8-15 m/min - Downfeed: 0.002-0.008 mm/pass (finishing), 0.008-0.015 mm/pass (roughing) - Crossfeed: 0.5-1.5 mm/pass - Spark-out: 4-6 passes with zero infeed - **Coolant Requirements:** - High-pressure coolant (≥ 30 bar) essential - Synthetic coolant with extreme pressure additives - Filtration to 2 μm or better - Temperature control to ±1°C ### **Electrical Discharge Machining (EDM):** - **Wire EDM:** Recommended with ultra-fine wire (0.07-0.10mm) - Multiple skim cuts (5-7) essential - Typical surface finish: Ra 0.2-0.5 μm achievable - **Sinker EDM:** Challenging but possible with specialized parameters - Graphite electrodes with fine grain structure - Multiple electrode strategy recommended - **White Layer Thickness:** Typically 4-10 μm (vs. 30-50 μm for conventional) - **Post-EDM Treatment:** Essential stress relief at 150-200°C below final temper ### **Polishing:** - **Capable of:** Excellent finishes ≤ 0.01 μm Ra with expert technique - **Progression:** 220 → 320 → 400 → 600 → 800 → 1200 → 1500 grit - **Final Polish:** Diamond compound (6 μm → 3 μm → 1 μm → 0.25 μm) - **Time Investment:** 2-3× longer than M2-type grades --- ## **Product Applications** ### **Extreme Performance Cutting Tools:** - **End Mills:** For machining high-temperature alloys, hardened steels (>60 HRC), and metal matrix composites - **Drills:** Deep hole drilling in superalloys and hardened materials - **Reamers:** Precision finishing of aerospace components and hardened bearing surfaces - **Gear Cutting Tools:** Hobs and shaper cutters for hard gear machining in aerospace and power transmission - **Threading Tools:** Taps and thread mills for high-strength materials - **Broaches:** For high-volume production of hardened precision components - **Turning Tools:** For heavy interrupted cuts in difficult materials ### **Specialty Applications Requiring Maximum High-Temperature Performance:** - **Aerospace Manufacturing:** Machining nickel-based superalloys (Inconel 718, Waspaloy, Rene alloys), titanium alloys, and cobalt-chrome alloys - **Power Generation:** Tools for machining turbine blades, vanes, and discs - **Oil & Gas:** Cutting tools for downhole equipment and valve components - **Die Casting:** Cores and inserts for aluminum and magnesium die casting (where high temperature resistance is critical) - **Hot Work Tooling:** Forging dies and inserts for high-temperature forging operations ### **Heavy Interrupted Cutting Operations:** - **Milling Cutters:** For face milling with heavy interruptions - **Slotting Cutters:** For deep slotting in difficult materials - **Plunge Turning:** For heavy roughing operations - **Contour Milling:** For complex aerospace components with varying engagement ### **Industry-Specific Applications:** - **Aerospace:** Structural components, engine parts, landing gear components - **Energy:** Turbine components, nuclear valve parts, drilling equipment - **Medical:** Implant machining, surgical instrument manufacturing - **Automotive:** High-performance racing components, transmission gears - **Tool & Die:** Precision dies for high-temperature applications --- ## **Comparative Performance Data** ### **Cutting Performance in High-Temperature Alloys:** | Work Material | Relative Tool Life (vs. PM M4) | Recommended Cutting Parameters | |---------------|--------------------------------|--------------------------------| | **Inconel 718** | 180-220% | Vc: 15-30 m/min, f: 0.05-0.12 mm/rev | | **Ti-6Al-4V** | 150-180% | Vc: 20-40 m/min, f: 0.06-0.15 mm/rev | | **Waspaloy** | 200-250% | Vc: 10-25 m/min, f: 0.04-0.10 mm/rev | | **Hardened Steel (60+ HRC)** | 160-200% | Vc: 40-70 m/min, f: 0.04-0.10 mm/rev | | **Cobalt-Chrome Alloys** | 170-210% | Vc: 12-25 m/min, f: 0.04-0.08 mm/rev | ### **High-Temperature Performance Comparison:** | Temperature | PM Krupp T15 Hardness (HRC) | PM M4 Hardness (HRC) | Advantage | |-------------|-----------------------------|----------------------|-----------| | **Room Temp** | 65-67 | 64-66 | +1-2 HRC | | **500°C** | 58-60 | 50-52 | +8 HRC | | **550°C** | 54-56 | 46-48 | +8 HRC | | **600°C** | 50-52 | 42-44 | +8 HRC | ### **Economic Benefits Analysis:** - **Tool Life Extension:** 60-120% over conventional T15 in high-temperature applications - **Reduced Machine Downtime:** More predictable tool life in critical operations - **Higher Productivity:** Ability to maintain higher cutting speeds in high-temperature alloys - **Improved Part Quality:** Better surface finishes and dimensional control in difficult materials - **Reduced Scrap Rate:** More reliable performance reduces part rejection --- ## **Quality Assurance** ### **Testing Protocol:** 1. **Chemical Analysis:** ICP-OES with combustion analysis for carbon and sulfur 2. **Hardness Testing:** Macro and microhardness with elevated temperature testing 3. **Microstructural Analysis:** - Carbide size and distribution (SEM image analysis) - Inclusion rating per ASTM E45 and SEP 1571 - Grain size measurement - Cobalt distribution analysis via EDS mapping 4. **Non-Destructive Testing:** - Ultrasonic testing per ASTM E214 (Class AAA for critical aerospace applications) - Dye penetrant inspection per ASTM E1417 5. **Mechanical Testing at Temperature:** - Elevated temperature tensile testing - Hot hardness testing - Thermal fatigue testing ### **Certification:** - **Material Certificate 3.1** per EN 10204 with full traceability - **Heat Treatment Certificate** with complete cycle documentation - **Ultrasonic Test Report** (Class AAA, AA, or A as specified) - **Micrographic Analysis** with comprehensive carbide characterization - **Elevated Temperature Test Data** for critical applications --- ## **Technical Support Services** PSM Industries provides specialized support for PM Krupp T15 applications, including application-specific heat treatment development, machining parameter optimization, and failure analysis for high-temperature applications. --- **Disclaimer:** The information contained herein is based on typical laboratory data and field performance. PM Krupp T15 is a premium material requiring specialized handling and processing. Actual results may vary depending on specific application conditions. Consultation with PSM technical personnel is essential for successful implementation. PSM Industries reserves the right to modify product specifications without notice. -:- For detailed product information, please contact sales. -: PSM Industries PM Krupp T15 Powder Metallurgy Steel Alloy Specification Dimensions Size： Diameter 20-1000 mm Length <7111 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 T15 Powder Metallurgy Steel Alloy Properties -:- For detailed product information, please contact sales. -:

Applications of PSM Industries PM Krupp T15 Powder Metallurgy Steel Wire Alloy -:- For detailed product information, please contact sales. -: Chemical Identifiers PSM Industries PM Krupp T15 Powder Metallurgy Steel Wire Alloy -:- For detailed product information, please contact sales. -:

Packing of PSM Industries PM Krupp T15 Powder Metallurgy Steel Wire 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 Wire 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 3582 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