Spherical Latrobe Graph-Air® Cold Work Tool Steel Powder (ASTM A10)

Latrobe Graph-Air® Cold Work Tool Steel Spherical Powder (ASTM A10) Product Information -:- For detailed product information, please contact sales. -: Latrobe Graph-Air® Cold Work Tool Steel Spherical Powder (ASTM A10) Synonyms -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: Spherical Latrobe Graph-Air® Cold Work Tool Steel Powder (ASTM A10) characteristics -:- For detailed product information, please contact sales. -: Spherical Latrobe Graph-Air® Cold Work Tool Steel Powder (ASTM A10) 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 Graph-Air® Cold Work Tool Steel Powder (ASTM A10) 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 Graph-Air® Cold Work Tool Steel Powder (ASTM A10) Chemical Composition -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: Latrobe Graph-Air® Cold Work Tool Steel (ASTM A10) Product Information -:- For detailed product information, please contact sales. -: # **Latrobe Graph-Air® Cold Work Tool Steel** ## **Premium Graphitic Air-Hardening Tool Steel for Enhanced Machinability and Wear Resistance** Latrobe Graph-Air® represents a specialized class of graphitic tool steel within the ASTM A10 specification, engineered to provide exceptional machinability combined with good wear resistance and dimensional stability. This unique air-hardening steel incorporates controlled graphite dispersion within its matrix, offering distinctive advantages for complex tooling applications where machining efficiency, thermal conductivity, and reduced galling tendency are critical performance factors. --- ### **Key Features & Benefits** - **Exceptional Machinability**: Graphite content significantly improves cutting performance and tool life during fabrication - **Good Wear Resistance**: Balanced carbide structure provides adequate abrasion resistance for many applications - **Enhanced Thermal Conductivity**: Graphite dispersion improves heat transfer characteristics - **Reduced Galling Tendency**: Graphite acts as a solid lubricant, minimizing material adhesion - **Air-Hardening Capability**: Can be hardened in air with minimal distortion and cracking risks - **Good Dimensional Stability**: Predictable size changes during heat treatment - **Self-Lubricating Properties**: Graphite provides inherent lubricity in service conditions --- ### **Chemical Composition (Typical %, ASTM A681 A10)** | Element | Carbon (C) | Graphite (Cgraphite) | Chromium (Cr) | Molybdenum (Mo) | Vanadium (V) | Silicon (Si) | Manganese (Mn) | Nickel (Ni) | |---------|------------|---------------------|---------------|-----------------|--------------|--------------|----------------|-------------| | **Content** | 1.25 - 1.50 | 0.60 - 1.10 | 1.00 - 1.50 | 1.00 - 1.50 | 0.90 - 1.40 | 0.90 - 1.20 | 0.40 - 0.70 | 1.25 - 1.75 | *Note: Graph-Air® features a unique composition that includes both combined carbon (in carbide form) and free carbon (as graphite). The controlled graphite dispersion (0.6-1.1%) is the defining characteristic that provides the distinctive properties of this grade, while nickel enhances toughness and hardenability.* --- ### **Physical & Mechanical Properties** | Property | Value / Description | |----------|---------------------| | **Density** | 7.75 g/cm³ (slightly reduced due to graphite content) | | **Thermal Conductivity** | 35-40 W/m·K at 20°C (enhanced by graphite dispersion) | | **Specific Heat Capacity** | 0.48 kJ/kg·K at 20°C | | **Coefficient of Thermal Expansion** | 11.5 × 10⁻⁶/K (20-100°C) | | **Hardness (Annealed)** | 190-225 HB | | **Hardness (Heat Treated)** | **54-60 HRC** (typical working range) | | **Tensile Strength** | 1,700-2,100 MPa (at 57 HRC) | | **Yield Strength** | 1,500-1,900 MPa (at 57 HRC) | | **Modulus of Elasticity** | 200-210 GPa | | **Impact Toughness** | Good – adequate for most cold work applications | | **Compressive Strength** | 1,900-2,300 MPa (at 57 HRC) | | **Machinability Rating** | **70-85%** of B1112 free-machining steel (exceptional for tool steel) | --- ### **Heat Treatment Guidelines** #### **Annealing** - **Temperature**: 790-820°C (1455-1510°F) - **Method**: Slow furnace cool at ≤20°C (36°F) per hour to 600°C (1110°F), then air cool - **Resultant Hardness**: 190-225 HB - **Special Note**: Careful temperature control required to preserve graphite structure #### **Stress Relieving** - **Temperature**: 600-650°C (1110-1200°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**: **845-870°C (1555-1600°F)** – relatively low temperature to preserve graphite 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**: 54-60 HRC typically achieved at 175-250°C (350-480°F) - **Special Feature**: Graphite structure remains stable through tempering cycles #### **Special Considerations** - **Atmosphere Control**: Neutral or slightly carburizing atmospheres recommended - **Temperature Limits**: Avoid exceeding 870°C (1600°F) to prevent graphite dissolution - **Cooling Rates**: Moderate cooling rates preserve graphite dispersion --- ### **International Standards & Equivalent Grades** | Standard | Grade Designation | Notes | |----------|-------------------|-------| | **ASTM** | A681 A10 | Primary specification (UNS T30110) | | **ISO** | 100CrMnMoSi4-4-2 | ISO 4957 designation | | **DIN** | Not directly equivalent | German standards lack direct graphitic equivalent | | **JIS** | Not directly equivalent | Japanese standards lack direct equivalent | | **AFNOR** | Not directly equivalent | French standards lack direct equivalent | | **Proprietary** | Graph-Air® | Latrobe Special Steel trademark | | **Similar Grades** | Other graphitic tool steels | Comparable graphitic steel technology | --- ### **Typical Applications** #### **Complex Tooling Applications** - **Intricate Dies and Molds**: With complex geometries requiring extensive machining - **Prototype Tooling**: Where rapid fabrication and modification are required - **Low-Volume Production Tools**: Justifying easier machining over maximum wear life - **Educational and Training Tools**: For machining and toolmaking instruction #### **Forming and Drawing Applications** - **Deep Drawing Dies**: Where reduced galling and material pickup are beneficial - **Forming Rolls and Mandrels**: For sheet metal forming operations - **Bending and Folding Tools**: For metal fabrication applications - **Spinning Tools**: For metal spinning operations #### **Plastic and Rubber Molding** - **Plastic Injection Molds**: Particularly for filled or abrasive plastics - **Compression Molds**: For plastic and rubber molding - **Extrusion Dies**: For plastic profile extrusion - **Blow Molding Tools**: For container manufacturing #### **Specialized Applications** - **Woodworking Tools**: Knives, blades, and cutting tools - **Paper Cutting Tools**: For paper and cardboard cutting - **Food Processing Equipment**: Cutting blades and components - **Textile Industry Tools**: Cutting blades and components #### **Non-Tooling Applications** - **Wear Plates and Guides**: Where self-lubricating properties are advantageous - **Bushings and Bearings**: For moderate load applications - **Machine Components**: Slides, ways, and guide components - **Fixtures and Jigs**: Precision holding and locating devices --- ### **Machining & Fabrication Notes** #### **Machinability (Annealed Condition)** - **Rating**: **70-85%** of B1112 free-machining steel (exceptional for tool steel) - **Recommended Tools**: HSS tools perform well; carbide for production efficiency - **Cutting Speeds**: 40-60 m/min (130-200 SFM) for turning operations with carbide - **Feed Rates**: Moderate to heavy feeds possible - **Coolant**: Standard soluble oils adequate - **Special Advantage**: Reduced cutting forces and extended tool life compared to conventional tool steels #### **Grindability** - **Relative Rating**: 75-85 (vs. 100 for annealed O1 tool steel) - **Abrasive Recommendations**: Aluminum oxide wheels - **Wheel Maintenance**: Normal dressing intervals - **Coolant**: Standard grinding coolant adequate - **Special Feature**: Graphite reduces wheel loading and improves grinding efficiency #### **EDM Machining** - Excellent suitability for wire and sinker EDM - Consistent material removal characteristics - Good surface finish with standard parameters - Graphite content may affect dielectric fluid performance #### **Polishing and Texturing** - Good polishability for most applications - Texturing response comparable to conventional tool steels - Surface preparation standard procedures apply - Final finishes adequate for most industrial applications --- ### **Quality Assurance & Metallurgical Standards** #### **Microstructural Requirements** - **Graphite Distribution**: Uniform dispersion of fine graphite particles - **Carbide Distribution**: Fine, uniformly distributed carbides - **Graphite Morphology**: Type II or III graphite preferred - **Grain Size**: ASTM 6 or finer - **Decarburization**: ≤0.30 mm per side on rough stock (allowance for graphitic structure) - **Graphite Content Verification**: Critical quality parameter #### **Testing & Certification** - Full chemical analysis with graphite content verification - Hardness testing throughout production - Microstructural evaluation including graphite characterization - Machinability testing data available - Standard material test reports with graphite specification --- ### **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 | Graph-Air® (A10) | A2 | O1 | D2 | |----------|------------------|----|----|----| | **Machinability** | **Excellent** | Good | Excellent | Fair | | **Wear Resistance** | Good | Good | Fair | **Excellent** | | **Toughness** | Good | Good | Good | Fair | | **Thermal Conductivity** | **Excellent** | Fair | Good | Fair | | **Galling Resistance** | **Excellent** | Fair | Good | Poor | | **Hardness Potential** | 54-60 HRC | 57-62 HRC | 57-61 HRC | 58-62 HRC | | **Primary Advantage** | Machinability + lubricity | Balance | Machinability | Wear resistance | | **Cost** | Moderate | Moderate | Low | Moderate-High | --- ### **Surface Treatment Compatibility** Graph-Air® presents unique considerations for surface treatments: - **Nitriding**: Suitable with specialized procedures (graphite may affect nitride layer) - **Chrome Plating**: Good adhesion with proper surface preparation - **PVD Coatings**: Suitable with appropriate surface conditioning - **Special Note**: Graphite content may affect some surface treatment processes --- ### **Economic Considerations** 1. **Material Cost**: Moderate – competitive with other air-hardening tool steels 2. **Machining Cost**: **Significantly reduced** compared to conventional tool steels 3. **Fabrication Efficiency**: Faster tool fabrication and modification 4. **Tool Life**: Adequate for many applications, though not maximum wear resistance 5. **Total Project Cost**: Often lower when machining costs are significant 6. **Overall Value**: Excellent for complex tools or situations requiring extensive machining --- ### **Technical Support** Latrobe provides specialized technical support for Graph-Air®: - **Machining Optimization**: Guidance on optimal cutting parameters - **Application Engineering**: Assistance with appropriate applications - **Heat Treatment Support**: Specialized protocols for graphitic steel - **Troubleshooting**: Support for fabrication and performance issues - **Material Selection**: Guidance on when graphitic steel is appropriate --- **Select Latrobe Graph-Air® Cold Work Tool Steel** when machining efficiency, reduced galling tendency, and thermal conductivity are primary concerns in tool fabrication and performance. This unique graphitic air-hardening tool steel provides distinctive advantages for complex tooling applications, prototype development, and situations where extensive machining is required. Graph-Air® represents an intelligent compromise solution that maximizes fabrication efficiency while providing adequate service performance for many industrial applications. When tool complexity, machining time, or material adhesion issues challenge conventional tool steel selection, Graph-Air® offers the distinctive advantages of graphitic steel technology backed by Latrobe's manufacturing excellence and technical support. For applications where the total cost of tool fabrication and performance must be optimized, Graph-Air® delivers measurable benefits through reduced machining time, improved thermal management, and enhanced operational characteristics. -:- For detailed product information, please contact sales. -: Latrobe Graph-Air® Cold Work Tool Steel (ASTM A10) Specification Dimensions Size： Diameter 20-1000 mm Length <7190 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 Graph-Air® Cold Work Tool Steel (ASTM A10) Properties -:- For detailed product information, please contact sales. -:

Spherical Latrobe Graph-Air® Cold Work Tool Steel Powder (ASTM A10) Particle Size Description -:- For detailed product information, please contact sales. -: Applications of Spherical Latrobe Graph-Air® Cold Work Tool Steel Powder (ASTM A10) -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: Applications of Latrobe Graph-Air® Cold Work Tool Steel Spherical Powder (ASTM A10) -:- For detailed product information, please contact sales. -: Chemical Identifiers Latrobe Graph-Air® Cold Work Tool Steel Spherical Powder (ASTM A10) -:- For detailed product information, please contact sales. -:

Packing of Latrobe Graph-Air® Cold Work Tool Steel Spherical Powder (ASTM A10) -:- 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 3661 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