Spherical Latrobe LSS™ A2 Tool Steel Powder (ASTM A2)

Latrobe LSS™ A2 Tool Steel Spherical Powder (ASTM A2) Product Information -:- For detailed product information, please contact sales. -: Latrobe LSS™ A2 Tool Steel Spherical Powder (ASTM A2) Synonyms -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: Spherical Latrobe LSS™ A2 Tool Steel Powder (ASTM A2) characteristics -:- For detailed product information, please contact sales. -: Spherical Latrobe LSS™ A2 Tool Steel Powder (ASTM A2) Particle Size -:- For detailed product information, please contact sales. -: -:- -:- 0-15μm ,5-25μm, 15-45μm, 15-53μm,20-63um, 45-75μm, 45-105μm, 45-150μm ,75-150μm. (Various granularities can be customized according to customer requirements) -:- For detailed product information, please contact sales. -:

Spherical Latrobe LSS™ A2 Tool Steel Powder (ASTM A2) Applicable processes -:- For detailed product information, please contact sales. -: Laser/electron beam additive manufacturing (SLM/EBM, 3D printing) Direct laser deposition (DLD) Used in thermal spray (TSA) Powder hot isostatic pressing (HIP) Metal injection molding (MIM) Powder metallurgy (PM) Laser cladding (LC), etc. -:- For detailed product information, please contact sales. -: Spherical Latrobe LSS™ A2 Tool Steel Powder (ASTM A2) Chemical Composition -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: Latrobe LSS™ A2 Tool Steel (ASTM A2) Product Information -:- For detailed product information, please contact sales. -: # **Latrobe LSS™ A2 Air-Hardening Tool Steel** ## **Premium Medium-Alloy Cold Work Tool Steel for Versatile Applications** Latrobe LSS™ A2 is a premium medium-alloy, air-hardening cold work tool steel that offers an excellent balance of wear resistance, dimensional stability, and toughness. As an ASTM A2 grade, it represents one of the most versatile and widely used tool steels for applications requiring good wear resistance with minimal distortion during heat treatment. This air-hardening characteristic makes it particularly suitable for complex tools and dies where dimensional accuracy is critical. --- ### **Key Features & Benefits** - **Excellent Dimensional Stability**: Minimal distortion during heat treatment due to air-hardening capability - **Good Wear Resistance**: Adequate abrasion resistance for many tooling applications - **High Hardness Potential**: Capable of achieving 58-62 HRC with proper heat treatment - **Good Toughness**: Better impact resistance than higher-carbon, higher-chromium tool steels - **Good Machinability**: Reasonable machinability in the annealed condition - **Deep Hardening Characteristics**: Good through-hardening in moderate sections - **Versatile Application Range**: Suitable for a wide variety of tooling applications --- ### **Chemical Composition (Typical %, ASTM A681 A2)** | Element | Carbon (C) | Chromium (Cr) | Molybdenum (Mo) | Vanadium (V) | Manganese (Mn) | Silicon (Si) | |---------|------------|---------------|-----------------|--------------|----------------|--------------| | **Content** | 0.95 - 1.05 | 4.75 - 5.50 | 0.90 - 1.40 | 0.15 - 0.50 | 0.40 - 1.00 | 0.10 - 0.50 | *Note: LSS™ A2 features a balanced chromium-molybdenum-vanadium composition that provides good hardenability, wear resistance, and toughness. The moderate carbon content ensures adequate hardness while maintaining reasonable toughness for many cold work applications.* --- ### **Physical & Mechanical Properties** | Property | Value / Description | |----------|---------------------| | **Density** | 7.86 g/cm³ | | **Thermal Conductivity** | 20-25 W/m·K at 20°C | | **Specific Heat Capacity** | 0.46 kJ/kg·K at 20°C | | **Coefficient of Thermal Expansion** | 11.5 × 10⁻⁶/K (20-100°C) | | **Hardness (Annealed)** | 200-235 HB | | **Hardness (Heat Treated)** | **57-62 HRC** (typical working range) | | **Tensile Strength** | 2,000-2,400 MPa (at 60 HRC) | | **Yield Strength** | 1,800-2,200 MPa (at 60 HRC) | | **Modulus of Elasticity** | 210-220 GPa | | **Impact Toughness** | Good – better than D2 but less than S7 | | **Compressive Strength** | 2,200-2,600 MPa (at 60 HRC) | --- ### **Heat Treatment Guidelines** #### **Annealing** - **Temperature**: 845-870°C (1555-1600°F) - **Method**: Slow furnace cool at ≤22°C (40°F) per hour to 600°C (1110°F), then air cool - **Resultant Hardness**: 200-235 HB #### **Stress Relieving** - **Temperature**: 650-675°C (1200-1245°F) - **Hold Time**: 1-2 hours per inch of thickness - **Cooling**: Air cool to room temperature #### **Hardening** 1. **Preheating**: 650-750°C (1200-1380°F) – thorough equalization 2. **Austenitizing**: **925-980°C (1695-1795°F)** – typically 950-970°C (1740-1780°F) 3. **Soak Time**: 20-40 minutes per inch of thickness 4. **Quenching**: **Air cooling standard**; forced air for maximum hardness 5. **Immediate Handling**: Cool to below 65°C (150°F) before tempering #### **Tempering** - **Temperature Range**: 175-540°C (350-1000°F) - **Cycles**: Double tempering recommended for dimensional stability - **Duration**: 2 hours per cycle minimum, air cool between cycles - **Target Hardness**: 57-62 HRC typically achieved at 175-230°C (350-450°F) - **Special Note**: Avoid tempering between 260-370°C (500-700°F) due to secondary hardening #### **Sub-Zero Treatment (Optional)** - **Application**: Recommended for maximum dimensional stability - **Temperature**: -80 to -100°C (-112 to -148°F) - **Duration**: 2-3 hours - **Timing**: After quenching, before tempering - **Benefit**: Enhanced dimensional stability and slightly increased hardness --- ### **International Standards & Equivalent Grades** | Standard | Grade Designation | Notes | |----------|-------------------|-------| | **ASTM** | A681 A2 | Primary specification (UNS T30102) | | **ISO** | 100CrMoV5 | ISO 4957 designation | | **DIN** | 1.2363 / X100CrMoV5-1 | German standard | | **JIS** | SKD12 | Japanese industrial standard | | **AFNOR** | X100CrMoV5 | French association standard | | **GB** | Cr5Mo1V | Chinese equivalent | | **UNS** | T30102 | Unified Numbering System | --- ### **Typical Applications** #### **Cutting and Forming Tools** - **Blanking and Piercing Dies**: For sheet metal up to 6mm (0.25") thickness - **Forming Dies and Punches**: For bending, drawing, and forming operations - **Shear Blades**: For cutting sheet metal and plate - **Cut-off Tools**: For lathes and automatic screw machines - **Thread Rolling Dies**: For thread forming applications #### **Molding Applications** - **Plastic Injection Molds**: For general-purpose molding applications - **Die Casting Dies**: Cores, cavities, and inserts (non-ferrous applications) - **Compression Molds**: For plastic and rubber molding - **Extrusion Dies**: For plastic profile extrusion #### **Gauges and Precision Tools** - **Measuring Instruments**: Calipers, micrometers, and gauges - **Jigs and Fixtures**: Precision fixtures and holding devices - **Machine Tool Components**: Slides, ways, and guide components - **Cutting Tool Holders**: For machining centers and lathes #### **Specialized Tooling** - **Woodworking Tools**: Knives, blades, and cutting tools - **Paper Cutting Tools**: For paper and cardboard cutting - **Textile Industry Tools**: Cutting blades and components - **Food Processing Equipment**: Cutting blades and components --- ### **Machining & Fabrication Notes** #### **Machinability (Annealed Condition)** - **Rating**: 50-60% of B1112 free-machining steel - **Recommended Tools**: HSS or carbide tools both suitable - **Cutting Speeds**: 15-25 m/min (50-80 SFM) for turning operations - **Feed Rates**: Moderate feeds with good chip control - **Coolant**: Heavy-duty soluble oil or synthetic coolant recommended #### **Grindability** - **Relative Rating**: 60-70 (vs. 100 for annealed O1 tool steel) - **Abrasive Recommendations**: Aluminum oxide wheels - **Wheel Maintenance**: Regular dressing recommended - **Coolant**: Adequate coolant flow important - **Note**: Grind in the annealed condition when possible #### **EDM Machining** - Suitable for wire and sinker EDM operations - Standard EDM parameters apply - Stress relief after roughing operations recommended - Heat treatment after EDM completion recommended #### **Welding and Repair** - Moderate weldability with proper procedures - Preheating to 300-400°C (570-750°F) recommended - Post-weld heat treatment essential - Suitable for repair of tools and dies --- ### **Quality Assurance & Metallurgical Standards** #### **Microstructural Requirements** - **Carbide Distribution**: Uniform distribution of chromium carbides - **Grain Size**: ASTM 6 or finer - **Decarburization**: ≤0.25 mm per side on rough stock - **Non-Metallic Inclusions**: ASTM E45 Method A, ≤2.5 total rating #### **Testing & Certification** - Full chemical analysis verification - Hardness testing throughout production - Microstructural evaluation available upon request - Standard material test reports with shipments --- ### **Available Product Forms** | Form | Standard Sizes | Condition | Surface Finish | |------|---------------|-----------|---------------| | **Round Bars** | 10-300mm diameter | Annealed | Black, Peeled, Ground | | **Flat Bars and Plate** | 10-150mm thickness | Annealed | Mill, Ground | | **Blocks** | Various dimensions | Annealed | Rough or finish machined | | **Forged Blanks** | Custom dimensions | Annealed | As-forged, Machined | --- ### **Technical Comparison** | Property | LSS™ A2 | D2 | O1 | S7 | |----------|----------|----|----|----| | **Wear Resistance** | Good | **Excellent** | Fair | Good | | **Toughness** | Good | Fair | Good | **Excellent** | | **Dimensional Stability** | **Excellent** | Very Good | Fair | Very Good | | **Hardness Potential** | 57-62 HRC | 58-62 HRC | 57-61 HRC | 56-60 HRC | | **Machinability** | Good | Fair | **Excellent** | Good | | **Primary Advantage** | Balance | Wear resistance | Machinability | Toughness | | **Cost** | Moderate | Moderate-High | Low | Moderate | --- ### **Surface Treatment Compatibility** LSS™ A2 is compatible with various surface treatments: - **Nitriding**: Excellent candidate for gas, plasma, or salt bath nitriding - **Chrome Plating**: Good adhesion with proper surface preparation - **PVD Coatings**: TiN, TiCN coatings suitable - **Surface Engineering**: Various treatments to enhance specific properties --- ### **Economic Considerations** 1. **Material Cost**: Moderate – cost-effective for many applications 2. **Tool Life**: Good service life in appropriate applications 3. **Heat Treatment Cost**: Lower due to air-hardening capability 4. **Machining Cost**: Reasonable machining costs 5. **Overall Value**: Excellent performance-to-cost ratio for versatile applications --- ### **Technical Support** Latrobe provides comprehensive technical support for LSS™ A2: - **Application Engineering**: Guidance on appropriate applications and heat treatment - **Troubleshooting**: Assistance with tool performance issues - **Heat Treatment Support**: Protocols for optimal performance - **Field Support**: On-site technical assistance available - **Material Selection**: Assistance in choosing the optimal grade for specific needs --- **Select Latrobe LSS™ A2 Air-Hardening Tool Steel** for applications requiring good wear resistance with excellent dimensional stability and minimal distortion during heat treatment. This versatile medium-alloy tool steel provides reliable performance in a wide range of cold work applications, offering a balanced combination of properties that has made it one of the most popular tool steels worldwide. LSS™ A2 represents an optimal solution for blanking and forming dies, plastic molds, gauges, and precision tools where dimensional accuracy and wear resistance must be balanced with reasonable toughness and cost-effectiveness. When air-hardening characteristics, good dimensional stability, and versatile performance are required, LSS™ A2 delivers proven reliability backed by Latrobe's manufacturing excellence. -:- For detailed product information, please contact sales. -: Latrobe LSS™ A2 Tool Steel (ASTM A2) Specification Dimensions Size： Diameter 20-1000 mm Length <7184 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™ A2 Tool Steel (ASTM A2) Properties -:- For detailed product information, please contact sales. -:

Spherical Latrobe LSS™ A2 Tool Steel Powder (ASTM A2) Particle Size Description -:- For detailed product information, please contact sales. -: Applications of Spherical Latrobe LSS™ A2 Tool Steel Powder (ASTM A2) -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: Applications of Latrobe LSS™ A2 Tool Steel Spherical Powder (ASTM A2) -:- For detailed product information, please contact sales. -: Chemical Identifiers Latrobe LSS™ A2 Tool Steel Spherical Powder (ASTM A2) -:- For detailed product information, please contact sales. -:

Packing of Latrobe LSS™ A2 Tool Steel Spherical Powder (ASTM A2) -:- 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 Spherical Powder 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 3655 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