PSM Industries,PM Krupp T-42 Powder Metallurgy Steel Rod/Bar Alloy

PSM Industries PM Krupp T-42 Powder Metallurgy Steel Rod Alloy Product Information -:- For detailed product information, please contact sales. -: PSM Industries PM Krupp T-42 Powder Metallurgy Steel Rod Alloy Synonyms -:- For detailed product information, please contact sales. -:

PSM Industries PM Krupp T-42 Powder Metallurgy Steel Alloy Product Information -:- For detailed product information, please contact sales. -: # **PSM Industries PM Krupp T-42 | Premium Powder Metallurgy Ultra-High Cobalt High-Speed Steel Alloy** ## **Overview** PSM Industries' PM Krupp T-42 represents the absolute zenith of powder metallurgy high-speed steel technology, engineered to deliver **maximum high-temperature performance** and **exceptional red hardness** for the most demanding machining applications. As a PM-processed evolution of the ultra-high-cobalt T42 (AISI T42 / 1.3268) composition, this alloy combines the highest commercially available cobalt content with carefully balanced tungsten, vanadium, and carbon levels through advanced argon atomization and hot isostatic pressing technologies. PM Krupp T-42 is specifically designed for machining superalloys, hardened steels, and other difficult-to-machine materials where cutting edge temperatures routinely exceed 600°C (1112°F), and where conventional high-speed steels cannot maintain adequate hardness and edge integrity. ## **Key Features:** - **Maximum Red Hardness:** Ultra-high cobalt content (7.50-8.50%) provides unparalleled hot hardness retention up to 650°C (1202°F) - **Exceptional High-Temperature Strength:** Maintains cutting performance at temperatures where other HSS grades completely soften - **Superior Thermal Conductivity:** Enhanced heat dissipation from cutting edge reduces thermal damage - **Ultra-Fine Homogeneous Microstructure:** PM processing eliminates carbide segregation with uniformly distributed carbides of 1-3 μm - **Excellent Thermal Fatigue Resistance:** Withstands extreme thermal cycling in interrupted cuts - **Optimized Toughness:** Careful balance maintains adequate toughness despite very high alloy content - **Perfect Isotropy:** Identical mechanical properties in all directions - **Minimal Distortion:** Exceptional dimensional stability during complex heat treatments - **Premium Grindability:** Optimized for this ultra-high alloy class through PM processing --- ## **Material Specifications: PM Krupp T-42** ### **1. Chemical Composition (wt%)** | Element | Content Range (wt%) | Function & Notes | |---------|---------------------|------------------| | **Carbon (C)** | 1.25 - 1.35% | Optimized for balanced carbide formation and matrix properties | | **Tungsten (W)** | 9.00 - 10.00% | Primary carbide former, provides exceptional red hardness | | **Chromium (Cr)** | 3.50 - 4.00% | Provides hardenability and oxidation resistance | | **Vanadium (V)** | 1.80 - 2.20% | Forms hard MC carbides for wear resistance | | **Cobalt (Co)** | 7.50 - 8.50% | **Ultra-high content** - maximizes hot hardness, temper resistance, and thermal conductivity | | **Molybdenum (Mo)** | 3.00 - 3.50% | Enhances hardenability and secondary hardening response | | **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 T42:** - **Homogeneous Cobalt Distribution:** Eliminates cobalt segregation common in conventional casting - **Optimal Carbide Distribution:** Fine, uniform carbides despite ultra-high alloy content - **Enhanced Toughness:** 25-40% improvement in transverse rupture strength - **Improved Grindability:** 50-80% better than conventional T42 despite similar hardness ### **2. Physical & Mechanical Properties** #### **Physical Properties:** | Property | Typical Value | Test Standard | |----------|---------------|----------------| | **Density** | 8.25 g/cm³ | ASTM B311 | | **Melting Range** | 1415-1465°C | - | | **Thermal Conductivity** | 27.5 W/m·K @ 20°C | 20-25% higher than M42 due to cobalt | | **Coefficient of Thermal Expansion** | 11.2 × 10⁻⁶/K (20-400°C) | ASTM E228 | | **Modulus of Elasticity** | 230 GPa | ASTM E111 | | **Specific Heat Capacity** | 430 J/kg·K @ 20°C | ASTM E1269 | #### **Mechanical Properties (Hardened & Triple Tempered):** | Tempering Condition | Hardness (HRC) | Transverse Rupture Strength (MPa) | Impact Toughness (Charpy, J) | Compressive Strength (MPa) | |----------------------|----------------|-----------------------------------|-----------------------------|----------------------------| | **3× 560°C** | 67-69 | 3,000-3,400 | 9-12 | 3,700-4,000 | | **3× 580°C** | 66-68 | 3,200-3,600 | 11-14 | 3,600-3,900 | | **3× 600°C** | 65-67 | 3,400-3,800 | 13-16 | 3,500-3,800 | | **3× 620°C** | 64-66 | 3,600-4,000 | 15-18 | 3,400-3,700 | #### **High-Temperature Properties (Key Advantage):** | Temperature | Hot Hardness (HV) | Hot Yield Strength (MPa) | Retained Hardness (% of RT) | |-------------|-------------------|--------------------------|------------------------------| | **500°C** | 750-800 | 1,600-1,800 | 85-90% | | **550°C** | 700-750 | 1,300-1,500 | 80-85% | | **600°C** | 650-700 | 1,000-1,200 | 75-80% | | **650°C** | 550-600 | 700-900 | 65-70% | #### **Comparative Hot Hardness Retention:** | Material | Hardness @ RT (HRC) | Hardness @ 600°C (HRC) | Retention @ 600°C | |----------|---------------------|------------------------|------------------| | **PM Krupp T-42** | 67-69 | 52-54 | 78-80% | | **PM T15** | 66-68 | 50-52 | 75-77% | | **PM M42** | 67-69 | 48-50 | 70-72% | | **PM M4** | 65-67 | 42-44 | 64-66% | ### **3. Microstructural Characteristics** - **Carbide Volume Fraction:** 16-18% - **Primary Carbide Types:** M₆C (Tungsten/Molybdenum-rich, 60-70%), MC (Vanadium-rich, 30-40%) - **Average Carbide Size:** 1-3 μm - **Maximum Carbide Size:** ≤ 5 μm - **Carbide Morphology:** Fine, rounded carbides - **Cobalt Distribution:** Homogeneous in solid solution - **Grain Size:** ASTM 10-11 - **Inclusion Rating:** ASTM E45: A ≤ 0.5, B ≤ 0.5, C ≤ 0.5, D ≤ 0.5 ### **4. Applicable & Reference Standards** - **ASTM A600:** Grade T42 (8% Cobalt High-Speed Steel) - **ISO 4957:** HS10-4-3-10 (similar composition) - **DIN 1.3268:** German standard for ultra-high cobalt HSS - **Customer-Specific Specifications:** Aerospace and power generation industries --- ## **Heat Treatment Guidelines** ### **Annealing:** - **Temperature:** 840-860°C (1544-1580°F) - **Resulting Hardness:** 250-280 HB ### **Hardening:** - **Preheating:** Multiple stages essential (500°C, 850°C, 1050°C) - **Austenitizing:** 1200-1230°C (2192-2246°F) - **Quenching:** High-pressure gas quench (10-15 bar) recommended ### **Tempering:** - **Minimum:** Triple tempering required - **Temperature Range:** 560-630°C (1040-1166°F) - **Cryogenic Treatment:** Highly beneficial between tempers --- ## **Product Applications** ### **Ultra-High Temperature Machining:** - **Nickel-Based Superalloys:** Inconel 718, Waspaloy, Rene alloys, Hastelloy - **Cobalt-Based Alloys:** Stellite, Haynes alloys - **Titanium Alloys:** Especially beta and near-beta alloys - **Hardened Steels:** 55-65 HRC materials ### **High-Performance Cutting Tools:** - **End Mills:** For aerospace and power generation components - **Drills:** Deep hole drilling in superalloys - **Turning Tools:** For heavy roughing of difficult materials - **Threading Tools:** Taps and thread mills for high-strength alloys ### **Special Applications:** - **Die Casting Tooling:** Where extreme thermal fatigue resistance is needed - **Hot Work Tooling:** Forging dies for high-temperature alloys - **Wear Parts:** Operating in high-temperature abrasive environments --- ## **Technical Advantages** ### **Performance Comparison:** - **vs. PM M42:** 15-20% better hot hardness at 600°C - **vs. PM T15:** 8-12% better high-temperature toughness - **vs. Conventional T42:** 40-60% better grindability - **vs. Carbides:** Better toughness and impact resistance ### **Economic Benefits:** - **Extended Tool Life:** 50-100% in high-temperature applications - **Higher Cutting Speeds:** 20-30% faster than M42 in superalloys - **Reduced Downtime:** More predictable tool failure patterns - **Improved Surface Finish:** Better edge integrity at high temperatures --- ## **Quality Assurance** - Complete traceability with full chemical and microstructural certification - Ultrasonic testing standard for all critical applications - Hardness mapping and elevated temperature testing available - Custom heat treatment certification --- **Disclaimer:** PM Krupp T-42 is a premium material requiring specialized heat treatment and handling. Consultation with PSM technical personnel is essential for successful application. This material represents the highest performance level in high-speed steel technology and commands appropriate pricing. Specifications subject to change without notice. -:- For detailed product information, please contact sales. -: PSM Industries PM Krupp T-42 Powder Metallurgy Steel Alloy Specification Dimensions Size： Diameter 20-1000 mm Length <7113 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 T-42 Powder Metallurgy Steel Alloy Properties -:- For detailed product information, please contact sales. -:

Applications of PSM Industries PM Krupp T-42 Powder Metallurgy Steel Rod Alloy -:- For detailed product information, please contact sales. -: Chemical Identifiers PSM Industries PM Krupp T-42 Powder Metallurgy Steel Rod Alloy -:- For detailed product information, please contact sales. -:

Packing of PSM Industries PM Krupp T-42 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 3584 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