Carpenter,Micro-Melt® HS-30 Alloy

Carpenter Micro-Melt® HS-30 Alloy Product Information -:- For detailed product information, please contact sales. -: Carpenter Micro-Melt® HS-30 Alloy Synonyms -:- For detailed product information, please contact sales. -:

Carpenter Micro-Melt® HS-30 Alloy Product Information -:- For detailed product information, please contact sales. -: ## **Carpenter Micro-Melt® HS-30 Alloy** ### **Premium Maraging Steel for High-Strength, High-Toughness Applications** --- ### **Product Overview** Carpenter Micro-Melt® HS-30 is a premium-grade maraging steel produced through Carpenter's proprietary powder metallurgy (PM) "Micro-Melt" process. Unlike conventional high-speed steels, HS-30 belongs to the **nickel-cobalt-molybdenum maraging steel family**, designed to achieve **exceptional combinations of high strength (up to 2400 MPa / 350 ksi) and superior toughness** through low-temperature age hardening rather than conventional quench-and-temper martensitic transformation. This material offers excellent dimensional stability during heat treatment, outstanding fracture toughness at high strength levels, and good fabricability in the annealed (solution-treated) condition. --- ### **Key Advantages** - **Ultra-High Strength with Excellent Toughness**: Unique ability to maintain high fracture toughness at tensile strengths exceeding 2000 MPa (290 ksi) - **Low-Temperature Heat Treatment**: Ages at 480°C (900°F) with minimal distortion and dimensional change - **Excellent Dimensional Stability**: Less than 0.1% dimensional change during aging - **Superior Fatigue Resistance**: Exceptional fatigue strength and crack propagation resistance - **Good Fabricability**: Can be machined and formed in the soft, solution-treated condition - **Simple Heat Treatment**: No quenching required - air cooling from solution temperature followed by aging - **Isotropic Properties**: Uniform properties in all directions due to PM manufacturing --- ### **Chemical Composition (%)** | Element | Nickel (Ni) | Cobalt (Co) | Molybdenum (Mo) | Titanium (Ti) | Aluminum (Al) | |---------|-------------|-------------|-----------------|---------------|---------------| | **Content** | 17.00-19.00 | 7.00-8.50 | 4.50-5.20 | 0.30-0.50 | 0.05-0.15 | | Element | Carbon (C) | Manganese (Mn) | Silicon (Si) | Zirconium (Zr) | Boron (B) | |---------|------------|----------------|--------------|----------------|-----------| | **Content** | ≤0.03 | ≤0.10 | ≤0.10 | ≤0.01 | 0.003-0.005 | *Note: Ultra-low carbon content distinguishes it from conventional tool steels; high nickel provides martensitic transformation without quenching* --- ### **Physical & Mechanical Properties** #### **Physical Properties** - **Density**: 8.00 g/cm³ (0.289 lb/in³) - **Melting Point**: 1410-1440°C (2570-2625°F) - **Thermal Conductivity**: 19.5 W/m·K at 20°C - **Coefficient of Thermal Expansion**: 10.5 × 10⁻⁶/°C (20-100°C) - **Modulus of Elasticity**: 185 GPa (26.8 × 10⁶ psi) - **Magnetic Properties**: Slightly magnetic in aged condition #### **Mechanical Properties (Solution Treated & Aged)** - **Solution Treated Condition**: - Hardness: 28-32 HRC - Ultimate Tensile Strength: 1000-1100 MPa (145-160 ksi) - Yield Strength: 800-900 MPa (116-130 ksi) - Elongation: 15-20% - **Aged Conditions** (at 480°C/900°F): 1. **HS-30A (Aged 3 hours)**: - Hardness: 50-52 HRC - Ultimate Tensile Strength: 1650-1750 MPa (240-255 ksi) - Yield Strength: 1550-1650 MPa (225-240 ksi) - Elongation: 10-12% - Fracture Toughness (K꜀c): 90-100 MPa·√m 2. **HS-30B (Aged 6 hours)**: - Hardness: 52-54 HRC - Ultimate Tensile Strength: 1850-1950 MPa (270-285 ksi) - Yield Strength: 1750-1850 MPa (255-270 ksi) - Elongation: 8-10% - Fracture Toughness (K꜀c): 80-90 MPa·√m 3. **HS-30C (Aged 10+ hours)**: - Hardness: 54-56 HRC - Ultimate Tensile Strength: 2100-2300 MPa (305-335 ksi) - Yield Strength: 2000-2200 MPa (290-320 ksi) - Elongation: 6-8% - Fracture Toughness (K꜀c): 65-75 MPa·√m #### **Fatigue Properties** - **Fatigue Strength** (10⁷ cycles, R=0.1): - HS-30A: 700-750 MPa (102-109 ksi) - HS-30B: 800-850 MPa (116-123 ksi) - HS-30C: 900-950 MPa (131-138 ksi) --- ### **Heat Treatment Process** #### **1. Solution Treatment** - **Temperature**: 820-850°C (1510-1560°F) - **Time**: 1 hour per 25mm (1 inch) of thickness - **Cooling**: Air cool (no quenching required) - **Result**: Soft, machinable condition (28-32 HRC) #### **2. Aging (Precipitation Hardening)** - **Temperature**: 480 ± 5°C (896 ± 9°F) - **Time Options**: - 3 hours: HS-30A condition (50-52 HRC) - 6 hours: HS-30B condition (52-54 HRC) - 10+ hours: HS-30C condition (54-56 HRC) - **Cooling**: Air cool after aging - **Note**: No decarburization concerns due to low carbon content #### **3. Stress Relieving** - Performed after heavy machining in aged condition - Temperature: 300-350°C (570-660°F) for 2 hours --- ### **International Standards & Cross-References** | Standard System | Designation | Notes | |----------------|-------------|-------| | **Carpenter** | Micro-Melt HS-30 | Primary proprietary designation | | **Common Names** | 18Ni Maraging 240, C300 | Industry maraging steel designations | | **AMS** | AMS 6512, AMS 6514 | Aerospace material specifications | | **UNS** | K92890 (similar) | For 18Ni(300) maraging steels | | **Aerospace** | 18Ni 300, 1.6354 | Common industry references | | **European** | X2NiCoMo18-8-5 | Similar composition designation | *Note: HS-30 is Carpenter's proprietary PM version with improved cleanliness and isotropy* --- ### **Typical Applications** #### **1. Aerospace & Defense** - **Rocket Motor Cases**: High strength-to-weight ratio for propulsion systems - **Aircraft Landing Gear**: Critical high-strength components - **Missile Components**: Structural elements requiring high reliability - **Helicopter Rotor Parts**: High fatigue resistance components - **Spacecraft Structures**: Lightweight, high-strength frames #### **2. Tooling & Die Applications** - **Plastic Injection Molds**: For high-pressure, high-precision molding - **Die Casting Dies**: Particularly for aluminum and magnesium - **Extrusion Dies**: For non-ferrous metals - **Hot Work Tooling**: Limited applications where thermal stability is required - **Precision Gauges**: Dimensional stability-critical measuring tools #### **3. High-Performance Industrial Components** - **High-Pressure Vessels**: For industrial gas and chemical processing - **Power Transmission Shafts**: High torque capacity components - **Fasteners**: Ultra-high-strength bolts and studs - **Springs**: For high-stress applications - **Bearings**: Specialized high-load bearings #### **4. Sports & Racing Equipment** - **Bicycle Frames**: High-performance racing bicycles - **Motorcycle Components**: Critical structural parts - **Golf Clubs**: High-end driver heads and components - **Archery Equipment**: Bow limbs and components #### **5. Special Applications** - **Nuclear Components**: Where radiation resistance is required - **Marine Applications**: Corrosion-resistant high-strength parts - **Medical Devices**: Surgical instruments and implants (with proper certification) --- ### **Machining & Fabrication** #### **In Solution Treated Condition (28-32 HRC)** - **Machinability**: Good (60-70% of 1% carbon steel) - **Recommended Tools**: High-speed steel or carbide tools - **Cutting Speeds**: 40-60 SFM for turning operations - **Feed Rates**: Moderate - **Coolant**: Recommended for best results - **Formability**: Can be cold formed with appropriate tooling #### **In Aged Condition (50-56 HRC)** - **Machining**: Difficult - requires carbide or CBN tools - **Grinding**: Aluminum oxide or CBN wheels with light passes - **EDM**: Suitable with proper parameters - **Polishing**: Achieves excellent surface finishes #### **Welding** - **Weldability**: Good with proper procedures - **Recommended Methods**: TIG, MIG, plasma arc - **Filler Material**: Matching composition or 18Ni maraging steel filler - **Post-Weld Heat Treatment**: Re-solution treat and age for maximum properties --- ### **Technical Specifications** #### **Quality Standards** - **Micro-Cleanliness**: Superior to AMS 2301 requirements - **Grain Size**: ASTM 8-10 (fine) - **Inclusion Rating**: Better than ASTM 2 for all inclusion types - **Ultrasonic Inspection**: Available to customer requirements - **Certification**: Full traceability with mill test reports #### **Available Forms** - **Round Bars**: 10mm to 300mm diameter - **Flat Bars**: Various thicknesses and widths - **Forgings**: Custom shapes and sizes - **Plate**: Up to 150mm thickness - **Billets**: For subsequent forging or machining - **Pre-finished Blanks**: Machined to customer specifications --- ### **Application-Specific Recommendations** #### **Strength-Toughness Selection Guide** | Application Requirement | Recommended Condition | Key Properties | |------------------------|----------------------|----------------| | **Maximum Toughness** | HS-30A (3hr age) | K꜀c: 90-100 MPa·√m, UTS: 1650-1750 MPa | | **Balanced Properties** | HS-30B (6hr age) | K꜀c: 80-90 MPa·√m, UTS: 1850-1950 MPa | | **Maximum Strength** | HS-30C (10+hr age) | K꜀c: 65-75 MPa·√m, UTS: 2100-2300 MPa | #### **Economic Considerations** - **Material Cost**: Premium pricing due to PM processing and alloy content - **Fabrication Savings**: Easy machining in soft condition reduces manufacturing costs - **Heat Treatment Savings**: Simple aging process vs. complex quench-and-temper - **Life Cycle Cost**: Extended service life in demanding applications **Typical ROI**: 1-3 years in aerospace and tooling applications --- ### **Limitations & Considerations** #### **Technical Limitations** - **Maximum Service Temperature**: 300°C (570°F) for extended use - **Corrosion Resistance**: Moderate - may require protection in severe environments - **Cost**: Higher than conventional ultra-high-strength steels - **Availability**: May require longer lead times for special sizes #### **Not Recommended For** - Applications above 300°C (570°F) continuous service - Highly corrosive environments without protection - Cost-sensitive applications where lower-grade materials suffice - Applications requiring hardness above 56 HRC --- ### **Special Processing Considerations** #### **Surface Treatments** - **Nitriding**: Possible to increase surface hardness (up to 70 HRC) - **Plating**: Chrome, nickel, or electroless nickel for corrosion protection - **Coating**: PVD coatings for specific applications - **Passivation**: For improved corrosion resistance #### **Machining After Aging** - Minimal machining recommended after aging - If necessary, use light cuts with sharp tools - Follow with stress relief at 300-350°C (570-660°F) --- ### **Industry-Specific Applications** #### **Aerospace Industry** - **Primary Structure**: Wing fittings, fuselage attachments - **Engine Components**: Mounts, brackets, fasteners - **Flight Control**: Hinges, actuators, linkages - **Space Systems**: Deployable structures, antenna components #### **Tool & Die Industry** - **Mold Bases**: For high-precision injection molding - **Die Inserts**: Wear-resistant components - **Ejector Pins**: High-strength, wear-resistant pins - **Guide Components**: Bushings, leader pins #### **Oil & Gas Industry** - **Downhole Tools**: MWD/LWD components - **Valve Components**: High-pressure valves - **Connectors**: Subsea connectors and fittings - **Tool Joints**: Drill string components --- ### **Maintenance & Service** #### **In-Service Monitoring** - Regular inspection for cracks or deformation - Non-destructive testing recommended for critical applications - Monitor dimensional stability in precision applications #### **Repair and Refurbishment** - Can be re-solution treated and re-aged if necessary - Weld repairs possible with proper procedures - Surface refinishing achievable with appropriate methods --- ### **Comparison with Competitive Materials** | Property | HS-30 | 4340 Steel | 300M Steel | Ti-6Al-4V | |----------|-------|------------|------------|-----------| | **Max UTS (MPa)** | 2300 | 1900 | 2100 | 1100 | | **Toughness at Max UTS** | Excellent | Good | Fair | Excellent | | **Heat Treatment Distortion** | Minimal | Significant | Significant | N/A | | **Machinability (soft)** | Good | Good | Good | Poor | | **Cost Factor** | High | Low | Medium | Very High | | **Strength-to-Weight** | High | Medium | Medium | Very High | --- ### **Environmental & Regulatory Compliance** - **RoHS Compliant**: Yes - **REACH Registered**: Yes - **Aerospace Certification**: Meets major aerospace specifications - **Quality Systems**: Produced under AS9100/ISO9001 quality systems --- ### **Conclusion** Carpenter Micro-Melt® HS-30 Alloy represents a unique combination of ultra-high strength and exceptional toughness made possible by maraging steel technology and powder metallurgy manufacturing. Its distinctive characteristics include: 1. **Unmatched Toughness at High Strength**: Maintains excellent fracture toughness at strength levels where other materials become brittle 2. **Simple, Low-Distortion Heat Treatment**: Aging process provides dimensional stability unattainable with quench-and-temper steels 3. **Superior Fatigue Performance**: Excellent resistance to crack initiation and propagation 4. **Excellent Fabricability**: Can be easily machined and formed in the soft condition **Key Benefits Summary:** - Enables lightweight designs through high strength-to-weight ratio - Reduces manufacturing costs through easy machining and minimal heat treatment distortion - Improves reliability through superior fatigue and fracture resistance - Provides design flexibility through customizable strength-toughness balance For applications where conventional high-strength steels cannot provide sufficient toughness, where heat treatment distortion must be minimized, or where weight reduction is critical, Micro-Melt HS-30 offers a technologically advanced solution. While commanding a premium price, its performance advantages and manufacturing benefits consistently justify its use in the most demanding aerospace, defense, tooling, and high-performance industrial applications. When failure is not an option and performance boundaries must be pushed, HS-30 provides the material science solution that bridges the gap between what is possible and what is practical with conventional metallurgy. --- *For specific application engineering support, 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 Micro-Melt® HS-30 Alloy Specification Dimensions Size： Diameter 20-1000 mm Length <6932 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 Micro-Melt® HS-30 Alloy Properties -:- For detailed product information, please contact sales. -:

Applications of Carpenter Micro-Melt® HS-30 Alloy -:- For detailed product information, please contact sales. -: Chemical Identifiers Carpenter Micro-Melt® HS-30 Alloy -:- For detailed product information, please contact sales. -:

Packing of Carpenter Micro-Melt® HS-30 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 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 3403 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