PSM Industries,PM Krupp A11 MOD Powder Metallurgy Steel Tube,Pipe Alloy

PSM Industries PM Krupp A11 MOD Powder Metallurgy Steel Tube Alloy Product Information -:- For detailed product information, please contact sales. -: PSM Industries PM Krupp A11 MOD Powder Metallurgy Steel Tube Alloy Synonyms -:- For detailed product information, please contact sales. -:

PSM Industries PM Krupp A11 MOD Powder Metallurgy Steel Alloy Product Information -:- For detailed product information, please contact sales. -: # **PSM Industries PM Krupp A11 MOD | Premium Powder Metallurgy High-Speed Steel Alloy** ## **Overview** PSM Industries' PM Krupp A11 MOD represents the pinnacle of advanced powder metallurgy (PM) tool steel technology, offering an optimized evolution of the classic Krupp A11 (equivalent to M2+ high-speed steel) formulation. Through state-of-the-art argon atomization and hot isostatic pressing (HIP) processes, this alloy achieves unprecedented levels of carbide uniformity, purity, and microstructural refinement. The "MOD" designation signifies specific modifications to the traditional A11 chemistry, resulting in enhanced toughness, improved grindability, and superior performance in demanding cutting and forming applications. This material exemplifies the advantages of the PM process over conventional ingot metallurgy, delivering consistent, isotropic properties that enable maximum tool performance and reliability in the most challenging applications. ## **Key Features:** - **Superior Microstructural Homogeneity:** Ultra-fine, uniformly distributed carbides eliminate the coarse networks and segregation inherent in conventionally cast high-speed steels - **Enhanced Toughness & Fatigue Resistance:** Modified chemistry and PM processing provide exceptional resistance to chipping, cracking, and fatigue failure - **Excellent Grindability:** Superior to conventional M2/A11 grades, enabling more complex geometries and sharper cutting edges - **Optimized Carbide Structure:** Balanced MC and M₆C carbide populations for optimal wear resistance and red hardness - **Isotropic Properties:** Identical mechanical characteristics in all directions due to homogeneous PM structure - **Increased Purity:** Significantly reduced non-metallic inclusions and improved cleanliness - **Superior Heat Treatment Response:** Consistent, predictable hardening behavior with wide processing window - **Improved Dimensional Stability:** Minimal distortion during heat treatment compared to conventional grades --- ## **Material Specifications: PM Krupp A11 MOD** ### **1. Chemical Composition (wt%)** The modified A11 chemistry is carefully balanced to optimize the performance advantages of PM processing: | Element | Content Range (wt%) | Function & Notes | |---------|---------------------|------------------| | **Carbon (C)** | 1.05 - 1.15% | Optimized for carbide formation and matrix hardness | | **Chromium (Cr)** | 4.00 - 4.50% | Provides hardenability, wear, and corrosion resistance | | **Molybdenum (Mo)** | 5.00 - 5.50% | Primary carbide former, enhances hot hardness | | **Tungsten (W)** | 6.25 - 6.75% | Secondary carbide former, improves red hardness | | **Vanadium (V)** | 2.00 - 2.30% | Forms hard MC carbides for wear resistance | | **Cobalt (Co)** | 0.20 - 0.40% | Optional addition to enhance hot hardness | | **Silicon (Si)** | 0.20 - 0.40% | Deoxidizer and strengthening element | | **Manganese (Mn)** | 0.20 - 0.40% | Improves hardenability and strength | | **Sulfur (S)** | ≤ 0.010% | Controlled for improved machinability (optional) | | **Phosphorus (P)** | ≤ 0.020% | Minimized for improved toughness | | **Iron (Fe)** | Balance | Matrix | **Key Modifications vs. Standard A11:** - **Vanadium:** Slightly increased for enhanced wear resistance - **Carbon:** Tightly controlled for optimal carbide balance - **Sulfur:** Minimized unless specified for improved machinability - **Cobalt:** Optional controlled addition for specific applications ### **2. Physical & Mechanical Properties** #### **Physical Properties:** | Property | Typical Value | Test Standard | |----------|---------------|----------------| | **Density** | 8.10 g/cm³ | ASTM B311 | | **Melting Range** | 1420-1460°C | - | | **Thermal Conductivity** | 24 W/m·K @ 20°C | ASTM E1461 | | **Coefficient of Thermal Expansion** | 10.4 × 10⁻⁶/K (20-400°C) | ASTM E228 | | **Modulus of Elasticity** | 220 GPa | ASTM E111 | | **Poisson's Ratio** | 0.30 | - | #### **Mechanical Properties (Hardened & Tempered):** | Tempering Condition | Hardness (HRC) | Transverse Rupture Strength (MPa) | Compressive Strength (MPa) | Fracture Toughness K₁c (MPa√m) | |---------------------|----------------|-----------------------------------|----------------------------|---------------------------------| | **2× 560°C** | 64-66 | 3,800-4,200 | 3,200-3,500 | 18-22 | | **2× 580°C** | 62-64 | 4,000-4,400 | 3,000-3,300 | 20-24 | | **3× 600°C** | 60-62 | 4,200-4,600 | 2,800-3,100 | 22-26 | #### **High-Temperature Properties:** | Temperature | Hot Hardness (HV) | Retained Hardness (% of RT) | |-------------|-------------------|------------------------------| | **400°C** | 750-800 | 85-90% | | **500°C** | 650-700 | 75-80% | | **600°C** | 550-600 | 60-65% | | **650°C** | 450-500 | 45-50% | #### **Comparative Performance Advantages vs. Conventional A11/M2:** - **Carbide Size Reduction:** 80-90% smaller carbides (typically 2-4 μm vs. 10-20 μm) - **Transverse Rupture Strength:** 15-25% improvement - **Fatigue Life:** 50-100% increase in cyclic loading applications - **Grinding Ratio:** 30-50% improvement (material removal vs. wheel wear) - **Tool Life Consistency:** 40-60% reduction in performance variability ### **3. Microstructural Characteristics** - **Carbide Volume Fraction:** 12-15% - **Average Carbide Size:** 2-4 μm - **Maximum Carbide Size:** ≤ 6 μm - **Primary Carbide Types:** MC (Vanadium-rich), M₆C (Molybdenum/Tungsten-rich) - **Grain Size:** ASTM 10-12 (fine) - **Inclusion Rating:** ASTM E45 Method A: A ≤ 1, B ≤ 1, C ≤ 1, D ≤ 1 ### **4. Applicable & Reference Standards** - **ISO 4957:** Tool steels (Reference: HS6-5-2-5) - **ASTM A600:** Standard Specification for Tool Steel High Speed - **DIN 1.3343:** German standard for high-speed steel - **JIS G4403:** High speed tool steels (Reference: SKH51) - **UNS T11302:** Unified Numbering System equivalent - **AMS 6491:** Aerospace Material Specification - **Custom Specifications:** Widely adopted in automotive, aerospace, and cutting tool industries --- ## **Heat Treatment Guidelines** ### **Annealing:** - **Temperature:** 870-900°C (1600-1650°F) - **Atmosphere:** Protective or vacuum - **Cooling:** 10-20°C/hour to 600°C, then furnace cool - **Resulting Hardness:** 240-280 HB ### **Stress Relieving:** - **After Rough Machining:** 600-650°C (1110-1200°F), 2 hours - **After EDM:** 150-200°C (300-400°F) below final tempering temperature ### **Hardening:** 1. **Preheating:** - First Stage: 450-500°C (840-930°F) - Second Stage: 850-900°C (1560-1650°F) 2. **Austenitizing:** - **Temperature:** 1190-1220°C (2175-2230°F) - **Time:** 2-4 minutes per mm of thickness (vacuum), shorter for salt bath - **Atmosphere:** Vacuum or salt bath preferred 3. **Quenching:** - Oil quench: 40-60°C oil temperature - Gas quench: 4-6 bar nitrogen or argon - Salt bath: 500-550°C marquench optional ### **Tempering:** - **Minimum:** Triple tempering recommended - **Temperature:** 540-600°C (1000-1110°F) depending on required hardness - **Time:** 60-120 minutes per temper, air cool between tempers - **Cryogenic Treatment:** Optional between tempers (-80 to -196°C) --- ## **Machining & Grinding** ### **Machining (Annealed Condition):** - **Hardness:** 240-280 HB (excellent machinability) - **Cutting Tools:** Carbide tools recommended - **Turning Speed:** 40-60 m/min - **Feed Rate:** 0.15-0.25 mm/rev - **Depth of Cut:** Up to 3 mm - **Coolant:** Recommended for all operations ### **Grinding (Hardened Condition):** - **Wheel Type:** Aluminum oxide (A) or CBN - **Wheel Grade:** J-K hardness - **Structure:** 8-10 (more open) - **Speed:** 25-30 m/s - **Feed:** Light to moderate, multiple passes - **Coolant:** Essential – high volume, low pressure ### **Electrical Discharge Machining (EDM):** - **Wire EDM:** Excellent results with proper parameters - **Sinker EDM:** Suitable with graphite electrodes - **Surface Affected Layer:** Typically 10-25 μm - **Post-EDM Treatment:** Stress relieve at 150-200°C below final temper --- ## **Product Applications** ### **Metal Cutting Tools:** - **End Mills:** For machining steel, cast iron, and high-temperature alloys - **Drills:** High-performance twist drills and gun drills - **Reamers:** Precision hole finishing tools - **Broaches:** Internal and surface broaching tools - **Gear Cutters:** Hobs, shaper cutters, and shaving tools - **Threading Tools:** Taps, dies, and thread mills ### **Forming Tools:** - **Punches and Dies:** For cold forming operations - **Extrusion Tools:** For forward and backward extrusion - **Header Dies:** For bolt and fastener production - **Roll Forming Rolls:** For profile forming ### **Special Applications:** - **Plastic Molding Tools:** For abrasive filled plastics - **Woodworking Tools:** For composite wood materials - **Wear Parts:** Bushings, guides, and wear plates - **Knives:** Industrial cutting blades ### **Industry-Specific Applications:** - **Automotive:** Transmission gears, engine components - **Aerospace:** Structural components, turbine parts - **Medical:** Surgical instrument components - **Energy:** Turbine blades, valve components --- ## **Quality Assurance** ### **Testing & Certification:** - **Chemical Analysis:** Spectrographic analysis for full composition - **Hardness Testing:** Brinell, Rockwell, and microhardness - **Microscopic Examination:** Carbide size, distribution, and cleanliness - **Ultrasonic Testing:** For internal defects in critical applications - **Mechanical Testing:** Tensile, impact, and bend testing available - **Dimensional Inspection:** CMM and conventional measurement ### **Certification Provided:** - Material Test Certificate 3.1 per EN 10204 - Heat Treatment certificate - Ultrasonic test report (when specified) - Micrograph with inclusion rating --- ## **Comparative Advantages** ### **vs. Conventional M2/A11:** | Property | Improvement | Benefit | |----------|-------------|---------| | **Tool Life Consistency** | 40-60% | More predictable performance | | **Toughness** | 20-30% | Reduced chipping and breakage | | **Grindability** | 30-50% | Lower grinding costs, better finishes | | **Fatigue Resistance** | 50-100% | Longer life in cyclic applications | | **Distortion During HT** | 50-70% reduction | Tighter tolerances, less finishing | ### **vs. Other PM HSS Grades:** - **Better grindability** than high-vanadium PM grades - **Higher toughness** than cobalt-containing PM grades - **More cost-effective** than super HSS grades for many applications - **Wider processing window** than some specialized PM grades --- ## **Technical Support** PSM Industries provides: - **Application Engineering:** Material selection and design optimization - **Heat Treatment Support:** Customized cycles for specific applications - **Failure Analysis:** Root cause determination and corrective actions - **Field Performance Monitoring:** Ongoing technical support - **Technical Training:** Workshops and seminars --- **Disclaimer:** The information contained herein is based on typical data and represents general guidelines. Actual performance may vary depending on specific application conditions, heat treatment procedures, and operational parameters. This document does not constitute a warranty or guarantee of performance. Users should conduct appropriate testing for their specific applications. PSM Industries reserves the right to modify 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 A11 MOD Powder Metallurgy Steel Alloy Specification Dimensions Size： Diameter 20-1000 mm Length <7106 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 A11 MOD Powder Metallurgy Steel Alloy Properties -:- For detailed product information, please contact sales. -:

Applications of PSM Industries PM Krupp A11 MOD Powder Metallurgy Steel Tube Alloy -:- For detailed product information, please contact sales. -: Chemical Identifiers PSM Industries PM Krupp A11 MOD Powder Metallurgy Steel Tube Alloy -:- For detailed product information, please contact sales. -:

Packing of PSM Industries PM Krupp A11 MOD Powder Metallurgy Steel Tube 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 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 3577 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