Carpenter,Vega® Alloy Tool Steel Wire (Air-Tough) (AISI A6)

Carpenter Vega® Alloy Tool Steel Wire (Air-Tough) (AISI A6) Product Information -:- For detailed product information, please contact sales. -: Carpenter Vega® Alloy Tool Steel Wire (Air-Tough) (AISI A6) Synonyms -:- For detailed product information, please contact sales. -:

Carpenter Vega® Alloy Tool Steel (Air-Tough) (AISI A6) Product Information -:- For detailed product information, please contact sales. -: # **Carpenter Vega® Alloy Tool Steel (Air-Tough) (AISI A6)** ## **Premium Air-Hardening Tool Steel for Superior Toughness and Minimal Distortion** --- ### **Product Overview** Carpenter Vega® Alloy is a premium air-hardening tool steel corresponding to the AISI A6 classification, specifically engineered to deliver **exceptional toughness combined with good wear resistance and minimal dimensional change during heat treatment**. Characterized by its unique manganese-chromium-molybdenum alloy system, Vega provides superior through-hardenability and impact resistance compared to conventional A2-type steels, while maintaining the dimensional stability advantages of air hardening. This alloy is particularly valued for applications requiring resistance to chipping, cracking, and shock loading in medium to heavy sections. --- ### **Key Advantages** - **Superior Toughness**: Excellent impact strength and fracture toughness for air-hardening tool steels - **Minimal Distortion on Hardening**: Exceptional dimensional stability during air quenching - **Deep Hardening Characteristics**: Through-hardens in air up to 150mm (6") sections - **Good Wear Resistance**: Balanced carbide structure provides adequate abrasion resistance - **Excellent Machinability**: Superior to most air-hardening grades in the annealed condition - **Good Resistance to Tempering**: Maintains hardness at elevated temperatures - **Predictable Heat Treatment**: Forgiving response with wide processing windows - **Cost-Effective Performance**: Provides S7-like toughness with better wear resistance --- ### **Chemical Composition (%)** | Element | Carbon (C) | Manganese (Mn) | Chromium (Cr) | Molybdenum (Mo) | Silicon (Si) | |---------|------------|----------------|---------------|-----------------|--------------| | **Content** | 0.65-0.75 | 1.80-2.20 | 0.90-1.20 | 0.90-1.20 | 0.10-0.40 | *Additional Elements:* - Nickel (Ni): ≤0.25% - Vanadium (V): ≤0.20% - Copper (Cu): ≤0.25% - Phosphorus (P): ≤0.030% - Sulfur (S): ≤0.030% *Note: The manganese-chromium-molybdenum balance provides exceptional hardenability and toughness while maintaining moderate wear resistance through controlled carbide formation.* --- ### **Physical & Mechanical Properties** #### **Physical Properties** - **Density**: 7.85 g/cm³ (0.284 lb/in³) - **Melting Point**: 1420-1460°C (2590-2660°F) - **Thermal Conductivity**: 32.0 W/m·K at 20°C - **Coefficient of Thermal Expansion**: 11.7 × 10⁻⁶/°C (20-100°C) - **Modulus of Elasticity**: 205 GPa (29.7 × 10⁶ psi) - **Specific Heat**: 460 J/kg·K at 20°C - **Electrical Resistivity**: 0.28 μΩ·m at 20°C #### **Mechanical Properties** **Annealed Condition (typical):** - Hardness: 190-220 HB - Ultimate Tensile Strength: 650-750 MPa (94-109 ksi) - Yield Strength: 380-480 MPa (55-70 ksi) - Elongation: 20-25% - Reduction of Area: 40-50% - Machinability Rating: 80% (relative to 1% carbon steel, 100%) **Hardened and Tempered Condition:** - **Typical Hardness Range**: **56-60 HRC** (optimal 57-59 HRC for maximum toughness) - Ultimate Tensile Strength: 1800-2000 MPa (261-290 ksi) - Yield Strength: 1500-1700 MPa (218-247 ksi) - Elongation: 8-12% - Reduction of Area: 25-35% - **Impact Toughness (Charpy V-notch)**: 35-50 J (26-37 ft-lb) at 58 HRC (exceptional for tool steel) - Compressive Strength: 2100-2400 MPa (305-348 ksi) - Transverse Rupture Strength: 3200-3600 MPa (464-522 ksi) - **Abrasion Resistance**: Comparable to A2 at equivalent hardness **Hardenability Characteristics:** - Fully hardenable in air up to 150mm (6 inches) diameter - Surface hardness of 60-62 HRC achievable on hardening - Through-hardness typically 1-2 HRC points lower than surface - Dimensional change: typically +0.03% to +0.07% on hardening (excellent stability) - Minimal distortion even in complex, asymmetrical shapes #### **Heat Treatment Parameters** 1. **Annealing:** - Temperature: 790-815°C (1450-1500°F) - Cooling: Slow furnace cool to 540°C (1000°F) at 15°C (25°F)/hour, then air cool - Resulting hardness: 190-220 HB - *For spheroidized structure: Hold at 760-790°C (1400-1450°F) for extended time* 2. **Stress Relieving (after rough machining):** - Temperature: 650-675°C (1200-1250°F) for 1-2 hours - Air cool 3. **Preheating:** - Temperature: 650-700°C (1200-1290°F) - Soak time: 30-60 minutes per inch of thickness 4. **Austenitizing:** - Temperature: 830-870°C (1525-1600°F) - Soak time: 30-60 minutes per inch of thickness - *Critical: Lower temperatures (830-850°C) for maximum toughness* 5. **Quenching:** - Medium: Still air or forced air (air hardening) - Cooling rate: Approximately 15-25°C (27-45°F) per minute - *For minimal distortion: Use interrupted cooling at 200-250°C (390-480°F)* - Cool to below 50°C (120°F) before tempering 6. **Tempering:** - **Tempering recommended within 4 hours of quenching** - Temperature range: 150-550°C (300-1020°F) - Double tempering recommended for maximum toughness and stability - Typical tempering response: - 150°C (300°F): 59-61 HRC - 205°C (400°F): 58-60 HRC - 260°C (500°F): 57-59 HRC - 315°C (600°F): 55-57 HRC - 425°C (800°F): 52-54 HRC - 550°C (1020°F): 45-48 HRC - Duration: 1-2 hours per inch of thickness, minimum 2 hours - Between tempers: Cool to room temperature - *Note: Tempering above 200°C significantly enhances toughness* --- ### **International Standards & Cross-References** | Standard System | Designation | Notes | |----------------|-------------|-------| | **Carpenter** | Vega® Alloy, Air-Tough | Proprietary name for premium A6 steel | | **AISI** | A6 | Standard medium-alloy air-hardening tool steel | | **UNS** | T30106 | Unified Numbering System | | **ISO** | - | No direct ISO equivalent | | **European (EN)** | - | Not standardized in EN system | | **German (DIN)** | 1.2365 | Similar air-hardening steel | | **British (BS)** | - | Not standardized in BS system | | **Japanese (JIS)** | - | No direct equivalent | | **Common Equivalents** | Finkl A6, AISI Type A6 | Commercial equivalents | --- ### **Typical Applications** #### **1. Forming and Stamping Tools** - **Heavy Forming Dies**: For high-strength materials requiring toughness - **Punching and Blanking Dies**: For thick materials and high-impact applications - **Cold Forging Tools**: Punches, dies, and inserts - **Thread Rolling Dies**: For tough materials - **Coining and Embossing Dies**: Where impact resistance is critical - **Extrusion Tools**: For non-ferrous metals at room temperature #### **2. Cutting Tools for Tough Materials** - **Shear Blades**: For cutting high-strength alloys and thick sections - **Industrial Knives**: For processing tough materials (composites, reinforced plastics) - **Slitter Knives**: For difficult-to-cut metals - **Band Saw Blades**: For cutting tool steels and hardened materials - **Woodworking Tools**: Chipper knives, planer blades for hardwoods #### **3. Plastic and Rubber Molds** - **Injection Mold Components**: Cavities and cores for abrasive filled plastics - **Compression Molds**: For thermoset plastics and rubber - **Blow Mold Components**: Where impact resistance is needed - **Extrusion Dies**: For abrasive plastic compounds - **Large Mold Bases**: Where dimensional stability is critical #### **4. Shock and Impact Tools** - **Chisels and Punches**: For heavy-duty applications - **Pneumatic Tool Components**: Impact surfaces and wear parts - **Hammer and Anvil Tools**: Blacksmith tools, striking surfaces - **Mining and Quarrying Tools**: Wear components subject to impact #### **5. Machine Components and Wear Parts** - **Gears and Shafts**: For heavy machinery subject to shock loads - **Wear Plates and Liners**: In abrasive, high-impact environments - **Bushings and Bearings**: For high-load, low-speed applications - **Machine Tool Components**: Slides, ways, and wear surfaces - **Rolls and Cylinders**: For forming and processing equipment --- ### **Machining & Fabrication Guidelines** #### **In Annealed Condition (190-220 HB)** - **Machinability**: Very good (80% of 1% carbon steel) - **Recommended Cutting Tools**: High-speed steel or carbide - **Turning Speeds**: 70-90 SFM with HSS, 200-300 SFM with carbide - **Milling Speeds**: 60-80 SFM with HSS, 180-250 SFM with carbide - **Drilling Speeds**: 40-60 SFM with HSS drills - **Coolant**: Recommended for best results and tool life - **Chip Characteristics**: Produces manageable chips; use chipbreakers for turning #### **Grinding and Finishing** - **Hardened State Grinding**: Excellent grindability for hardened steel - **Wheel Selection**: Use aluminum oxide (46-60 grit, H-I hardness) - **Grinding Parameters**: Medium passes with adequate coolant - **Surface Finish**: Capable of achieving 0.4μm (16μin) Ra or better - **Polishing**: Responds well to conventional polishing techniques - **Electrical Discharge Machining (EDM)**: Excellent results; stress relieve after #### **Welding and Joining** - **Weldability**: Good with proper procedures - **Recommended Methods**: TIG or MIG with preheating (200-300°C / 400-570°F) - **Filler Material**: Matching composition or high-nickel alloys - **Post-Weld Heat Treatment**: Stress relieve at 550-600°C (1020-1110°F) - **Hardening After Welding**: Possible with full re-austenitizing --- ### **Surface Treatment Compatibility** #### **Recommended Treatments** - **Nitriding**: Gas or plasma nitriding for increased surface hardness (65-68 HRC) - **Hard Chrome Plating**: For improved wear and corrosion resistance - **Phosphate Coating**: For improved lubrication in forming applications - **Black Oxide**: For corrosion resistance and appearance - **Titanium Nitride (TiN) Coating**: PVD coating for specific applications #### **Benefits of Surface Treatments** - **Extended Tool Life**: 50-150% improvement with appropriate treatments - **Enhanced Wear Resistance**: Surface hardness up to 68 HRC with nitriding - **Corrosion Protection**: Improved resistance to rust and chemical attack - **Reduced Friction**: Better material flow in forming applications - **Improved Fatigue Strength**: Surface compressive stresses from nitriding --- ### **Comparison with Similar Tool Steels** | Property | Vega (A6) | A2 | S7 (Shock) | O1 (Oil-Hard) | |----------|-----------|----|------------|---------------| | **Impact Toughness** | Excellent | Good | Excellent | Good | | **Wear Resistance** | Good | Very Good | Fair | Good | | **Dimensional Stability** | Excellent | Excellent | Good | Excellent | | **Machinability** | Very Good | Good | Fair | Excellent | | **Maximum Hardness (HRC)** | 60-62 | 62-64 | 58-60 | 64-66 | | **Deep Hardening** | Excellent | Very Good | Good | Good | | **Primary Application** | Tough tooling | General tooling | Extreme impact | Precision tools | | **Heat Treatment** | Air-hardening | Air-hardening | Air-hardening | Oil-hardening | | **Cost Factor** | Medium | Medium | Medium-High | Low | --- ### **Design and Manufacturing Considerations** #### **Optimal Design Practices** - **Generous Radii**: Minimum 2.0mm (0.080") on internal corners - **Gradual Section Transitions**: Avoid abrupt changes in cross-section - **Symmetrical Designs**: To ensure uniform cooling during hardening - **Adequate Section Size**: Minimum 5mm (3/16") for through-hardening - **Stress Relief Features**: Proper chamfers and reliefs #### **Heat Treatment Best Practices** 1. **Thorough Preheating**: Essential for complex shapes 2. **Controlled Austenitizing**: Lower temperatures for maximum toughness 3. **Uniform Heating**: Ensure even temperature throughout 4. **Controlled Cooling**: Still air for simple shapes, forced air for uniformity 5. **Proper Tempering**: Multiple tempers for maximum toughness 6. **Temperature Uniformity**: Critical during all heat treatment stages #### **Common Pitfalls to Avoid** - Over-austenitizing (reduces toughness) - Insufficient preheating for complex shapes - Uneven cooling during quenching - Inadequate tempering (insufficient toughness development) - Using contaminated atmosphere during heating --- ### **Economic Justification** #### **Cost-Benefit Analysis** - **Reduced Tool Failure**: Superior toughness minimizes chipping and cracking - **Extended Tool Life**: Good wear resistance combined with toughness - **Lower Maintenance Costs**: Fewer repairs and less downtime - **Versatile Application**: One material for multiple tough applications - **Good Machinability**: Lower manufacturing costs than many alloy steels **Typical ROI**: 3-8 months in demanding forming and cutting applications #### **Total Cost Factors** 1. **Material Cost**: Moderate compared to specialized high-toughness grades 2. **Manufacturing Cost**: Low due to excellent machinability 3. **Heat Treatment Cost**: Simple air hardening (low energy costs) 4. **Tool Performance**: Excellent for tough applications 5. **Maintenance**: Easy to repair and rework --- ### **Industry-Specific Applications** #### **Heavy Manufacturing** - **Forging and Stamping**: Die components for automotive and heavy equipment - **Metal Processing**: Slitting, shearing, and cutting tools - **Heavy Machinery**: Gears, shafts, and wear components #### **Plastics and Rubber Processing** - **Large Injection Molds**: Where impact resistance is needed - **Compression Molds**: For abrasive rubber compounds - **Extrusion Tools**: For filled plastic compounds - **Blow Mold Components**: For large container manufacturing #### **Construction and Mining** - **Demolition Tools**: Impact components and wear parts - **Excavation Equipment**: Tooth points, cutting edges - **Drilling Tools**: Components subject to impact #### **Aerospace and Defense** - **Tooling for Composites**: Cutting and trimming tools for CFRP - **Forming Tools**: For aerospace components - **Fixture Components**: High-strength, wear-resistant parts --- ### **Technical Specifications & Quality Assurance** #### **Quality Standards** - **Micro-Cleanliness**: Meets ASTM E45 requirements - **Grain Size**: ASTM 6-8 (fine to medium) - **Decarburization**: Controlled to ≤0.30mm (0.012") per side - **Hardness Uniformity**: Consistent through specified sections - **Ultrasonic Testing**: Available for critical applications #### **Available Forms** - **Round Bars**: 10mm to 400mm diameter - **Flat Bars and Plates**: Various thicknesses up to 300mm - **Forgings**: Custom shapes and sizes - **Blocks**: Up to 500mm thickness - **Pre-finished Blanks**: Ground, stress-relieved, or rough machined - **Special Sections**: Squares, hexagons, and custom profiles #### **Certification** - Mill test certificates with full chemical analysis - Hardness and mechanical test reports - Microstructure and grain size reports - Full traceability to heat and melt numbers - Compliance with international standards --- ### **Safety and Environmental Considerations** #### **Material Safety** - Standard steel handling precautions apply - Grinding dust requires proper ventilation - No special handling requirements beyond normal steel precautions #### **Regulatory Compliance** - ROHS compliant - REACH registered - Conforms to international environmental standards - Suitable for food contact applications with proper surface treatment --- ### **Conclusion** Carpenter Vega® Alloy (AISI A6) represents a specialized solution in the air-hardening tool steel category, offering exceptional toughness and impact resistance while maintaining the dimensional stability advantages of air hardening. Its unique combination of properties makes it the material of choice for applications where resistance to chipping, cracking, and shock loading is more critical than ultimate wear resistance. **Key Advantages Summary:** 1. **Exceptional Toughness**: Superior impact strength for demanding applications 2. **Minimal Distortion**: Excellent dimensional stability during heat treatment 3. **Deep Hardening**: Through-hardens in substantial sections 4. **Good Machinability**: Easy to fabricate in the annealed condition 5. **Versatile Performance**: Suitable for forming, cutting, and structural applications For toolmakers and manufacturers facing challenges with tool failure due to impact damage or shock loading, Vega Alloy provides a reliable solution that bridges the gap between general-purpose tool steels and specialized shock-resistant grades. While not intended for applications requiring extreme wear resistance, it excels in environments where tools must withstand repeated impact without failing catastrophically. When the application demands a tool steel that can absorb punishment without cracking, that maintains its dimensional accuracy through heat treatment, and that provides reliable performance in tough industrial environments, Carpenter Vega Alloy stands as the engineered solution backed by Carpenter's metallurgical expertise and quality assurance. --- *For specific application recommendations, heat treatment guidelines, or technical assistance, consult with Carpenter Technology's technical services team. Always refer to the latest technical data sheets for current specifications and processing recommendations.* -:- For detailed product information, please contact sales. -: Carpenter Vega® Alloy Tool Steel (Air-Tough) (AISI A6) Specification Dimensions Size： Diameter 20-1000 mm Length <6939 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. -: Carpenter Vega® Alloy Tool Steel (Air-Tough) (AISI A6) Properties -:- For detailed product information, please contact sales. -:

Applications of Carpenter Vega® Alloy Tool Steel Wire (Air-Tough) (AISI A6) -:- For detailed product information, please contact sales. -: Chemical Identifiers Carpenter Vega® Alloy Tool Steel Wire (Air-Tough) (AISI A6) -:- For detailed product information, please contact sales. -:

Packing of Carpenter Vega® Alloy Tool Steel Wire (Air-Tough) (AISI A6) -:- 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 Wire 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 3410 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