Latrobe,LSS™ H10A Modified

Latrobe LSS™ H10A Modified Product Information -:- For detailed product information, please contact sales. -: Latrobe LSS™ H10A Modified Synonyms -:- For detailed product information, please contact sales. -:

Latrobe LSS™ H10A Modified Product Information -:- For detailed product information, please contact sales. -: # **Latrobe LSS™ H10A Modified Hot Work Tool Steel** ## **Enhanced Chromium-Molybdenum Hot Work Steel for Superior Performance** Latrobe LSS™ H10A Modified represents an enhanced version of the standard H10 hot work tool steel, featuring optimized chemistry and improved processing for superior performance in demanding high-temperature applications. This modified grade maintains the excellent thermal fatigue resistance of conventional H10 while offering enhanced high-temperature strength, improved toughness, and better overall consistency. Designed for critical hot work applications where reliability and extended service life are paramount. --- ### **Key Features & Benefits** - **Enhanced Thermal Fatigue Resistance**: Optimized composition provides superior resistance to heat checking and thermal cracking - **Improved High-Temperature Strength**: Maintains mechanical properties at elevated temperatures up to 565°C (1050°F) - **Superior Toughness**: Enhanced impact resistance for demanding applications with mechanical shock - **Better Wear Resistance**: Improved alloy balance provides enhanced abrasion resistance in hot work conditions - **Excellent Dimensional Stability**: Minimal distortion during heat treatment and in service - **Consistent Performance**: Enhanced manufacturing controls ensure batch-to-battle consistency --- ### **Chemical Composition (Typical %, Modified H10 Specification)** | Element | Carbon (C) | Chromium (Cr) | Molybdenum (Mo) | Vanadium (V) | Silicon (Si) | Manganese (Mn) | Special Additions | |---------|------------|---------------|-----------------|--------------|--------------|----------------|-------------------| | **Content** | 0.35 - 0.42 | 3.00 - 3.50 | 2.75 - 3.25 | 0.35 - 0.55 | 0.90 - 1.20 | 0.25 - 0.60 | Micro-alloyed | *Note: LSS™ H10A Modified features a carefully optimized composition with refined alloying elements and controlled micro-alloying additions that enhance performance without compromising toughness. The balance between chromium, molybdenum, and vanadium has been specifically tuned for improved hot work characteristics.* --- ### **Physical & Mechanical Properties** | Property | Value / Description | |----------|---------------------| | **Density** | 7.83 g/cm³ | | **Thermal Conductivity** | 29-33 W/m·K at 20°C (slightly improved over standard H10) | | **Specific Heat Capacity** | 0.46 kJ/kg·K at 20°C | | **Coefficient of Thermal Expansion** | 11.3 × 10⁻⁶/K (20-400°C) | | **Hardness (Annealed)** | 185-215 HB | | **Hardness (Heat Treated)** | **44-50 HRC** (optimized working range) | | **High-Temperature Yield Strength** | ≥ 1000 MPa at 540°C (1000°F) | | **Tensile Strength** | 1,650-2,000 MPa (at 47 HRC) | | **Yield Strength** | 1,450-1,800 MPa (at 47 HRC) | | **Modulus of Elasticity** | 205-215 GPa | | **Impact Toughness** | Excellent – superior to standard H10 | --- ### **Heat Treatment Guidelines** #### **Annealing** - **Temperature**: 840-860°C (1545-1580°F) - **Method**: Slow furnace cool at ≤20°C (36°F) per hour to 600°C (1110°F), then air cool - **Resultant Hardness**: 185-215 HB - **Special Note**: Modified composition allows for slightly lower annealing temperature #### **Stress Relieving** - **Temperature**: 620-650°C (1150-1200°F) - **Hold Time**: 1-2 hours per inch of thickness - **Cooling**: Slow cool to 500°C (930°F), then air cool #### **Hardening** 1. **Preheating**: 600-700°C (1110-1290°F) – thorough equalization 2. **Intermediate Preheat**: 800-850°C (1470-1560°F) – recommended for complex sections 3. **Austenitizing**: **1000-1030°C (1830-1885°F)** – precise control recommended 4. **Soak Time**: 20-40 minutes per inch of thickness (depending on section size) 5. **Quenching**: Air cooling standard; oil for maximum hardness in thick sections 6. **Immediate Handling**: Cool to below 65°C (150°F) before tempering #### **Tempering** - **Temperature Range**: 540-620°C (1005-1150°F) - **Cycles**: Double tempering mandatory; triple tempering recommended for critical applications - **Duration**: 2 hours per cycle minimum, air cool between cycles - **Target Hardness**: 44-50 HRC typically achieved at 560-600°C (1040-1110°F) - **Special Note**: Modified grade shows improved tempering resistance --- ### **International Standards & Equivalent Grades** | Standard | Grade Designation | Notes | |----------|-------------------|-------| | **ASTM** | Modified H10 | Enhanced version of A681 H10 | | **Proprietary** | LSS™ H10A Modified | Latrobe Special Steel designation | | **Similar Grades** | H10 with enhancements | Comparable to premium H10 variants | | **ISO** | 30CrMoV12-9 (Enhanced) | Enhanced version of ISO standard | | **DIN** | 1.2365 Enhanced | German standard with improvements | | **Customer Specifications** | Various | Meets many OEM specifications | --- ### **Typical Applications** #### **Premium Die Casting Applications** - **High-Pressure Aluminum Die Casting**: Core pins, cavities, and inserts for demanding applications - **Large Die Casting Dies**: For automotive and industrial components - **Critical Die Components**: Where extended service life is essential - **Shot Sleeves and Plunger Tips**: For high-production aluminum casting #### **Demanding Extrusion Tooling** - **Complex Aluminum Extrusion Dies**: Profile dies requiring superior thermal fatigue resistance - **High-Stress Extrusion Components**: Mandrels, backers, and feeder plates - **Thin-Wall Extrusion Dies**: Where dimensional stability is critical #### **Advanced Forging Applications** - **Precision Forging Dies**: For automotive and aerospace components - **Hot Trimming Dies**: Requiring good wear and thermal fatigue resistance - **Forging Die Inserts**: For extended service in production environments #### **Specialized Hot Work Applications** - **Hot Runner Systems**: For engineering plastics and high-temperature polymers - **Glass Molding Tools**: Where thermal cycling is severe - **Hot Forming Tools**: For advanced high-strength steels - **Die Casting Machine Components**: Goosenecks, nozzles, and other hot zone parts --- ### **Machining & Fabrication Notes** #### **Machinability (Annealed Condition)** - **Rating**: 65-75% of B1112 free-machining steel - **Recommended Tools**: HSS or carbide tools both suitable - **Cutting Speeds**: 25-35 m/min (80-115 SFM) for turning operations - **Feed Rates**: Moderate to heavy feeds possible - **Coolant**: Standard soluble oils adequate - **Advantage**: Better machinability than many comparable hot work steels #### **Grindability** - **Relative Rating**: 75-85 (vs. 100 for annealed O1 tool steel) - **Abrasive Recommendations**: Aluminum oxide or CBN wheels - **Wheel Maintenance**: Normal dressing intervals - **Coolant**: Standard grinding coolant adequate - **Special Note**: Good grindability for a hot work steel #### **EDM Machining** - Excellent suitability for wire and sinker EDM - Consistent material removal characteristics - Good surface finish achievable - Stress relief after roughing operations recommended #### **Welding and Repair** - Good weldability with proper procedures - Preheating to 300-400°C (570-750°F) recommended - Post-weld heat treatment essential - Suitable for die repair and maintenance --- ### **Quality Assurance & Metallurgical Standards** #### **Microstructural Requirements** - **Carbide Distribution**: Fine, uniformly distributed carbides - **Grain Size**: ASTM 7 or finer - **Decarburization**: ≤0.20 mm per side on finished products - **Non-Metallic Inclusions**: ASTM E45 Method A, ≤2.0 total rating - **Microcleanliness**: Enhanced standards for critical applications #### **Testing & Certification** - Complete chemical analysis with enhanced element control - Hardness testing at multiple production stages - Microstructural evaluation with enhanced standards - Mechanical testing available for specific applications - Certified material test reports with enhanced data --- ### **Available Product Forms** | Form | Standard Sizes | Condition | Surface Finish | |------|---------------|-----------|---------------| | **Round Bars** | 15mm - 600mm diameter | Annealed | Black, Peeled, Ground | | **Flat Bars and Plate** | 10-300mm thickness | Annealed | Mill, Ground, Machined | | **Blocks** | Custom dimensions | Annealed | Rough or finish machined | | **Forged Blanks** | Customer specifications | Annealed | As-forged, Machined | | **Near-Net Shapes** | Complex geometries | Annealed | Machined to close tolerances | --- ### **Technical Comparison** | Property | LSS™ H10A Modified | Standard H10 | H13 | H11 | |----------|---------------------|--------------|-----|-----| | **Thermal Fatigue Resistance** | **Excellent** | Very Good | Excellent | Good | | **High-Temperature Strength** | Very Good | Good | Very Good | Good | | **Toughness** | **Excellent** | Very Good | Good | Very Good | | **Wear Resistance** | Very Good | Good | Very Good | Good | | **Machinability** | Very Good | Good | Good | Good | | **Cost Performance** | Excellent | Very Good | Good | Very Good | --- ### **Surface Treatment Compatibility** LSS™ H10A Modified is compatible with various surface treatments: - **Nitriding**: Gas, plasma, or salt bath nitriding for enhanced surface hardness - **Coatings**: PVD and CVD coatings for specific applications - **Surface Engineering**: Various treatments to enhance performance --- ### **Economic Considerations** 1. **Material Cost**: Moderate premium over standard H10 2. **Tool Life**: Typically 20-40% improvement in demanding applications 3. **Maintenance Interval**: Extended time between repairs and maintenance 4. **Overall Value**: Excellent return on investment for critical applications --- ### **Technical Support Services** Latrobe provides enhanced technical support for LSS™ H10A Modified: - **Application Engineering**: Specialized guidance for demanding applications - **Heat Treatment Optimization**: Custom protocols for specific requirements - **Performance Analysis**: Assistance with tool performance optimization - **Troubleshooting**: Enhanced support for application challenges --- **Select Latrobe LSS™ H10A Modified Hot Work Tool Steel** for applications requiring enhanced performance beyond standard H10 capabilities. This optimized grade provides superior thermal fatigue resistance, improved toughness, and better overall consistency for demanding hot work applications. Whether for critical die casting components, complex extrusion dies, or demanding forging applications, LSS™ H10A Modified delivers reliable performance and extended service life. When standard hot work steels reach their limitations but higher-cost alternatives are not justified, LSS™ H10A Modified provides the optimal solution combining enhanced performance with excellent value. -:- For detailed product information, please contact sales. -: Latrobe LSS™ H10A Modified Specification Dimensions Size： Diameter 20-1000 mm Length <7165 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 LSS™ H10A Modified Properties -:- For detailed product information, please contact sales. -:

Applications of Latrobe LSS™ H10A Modified -:- For detailed product information, please contact sales. -: Chemical Identifiers Latrobe LSS™ H10A Modified -:- For detailed product information, please contact sales. -:

Packing of Latrobe LSS™ H10A Modified -:- 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 Sheet/Plate 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 3636 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