YXR33 Material Detailed Information
YXR33 is a high-performance high-speed tool steel developed by Hitachi Metals, designed for high toughness, wear resistance, and heat resistance. It is primarily used in cold and hot work tooling applications, such as punches, dies, cold forming tools, and cutting tools, where extreme durability and toughness are required.
Compared to traditional high-speed steels like SKH51 (M2) and SKH55 (M35), YXR33 offers superior toughness, longer tool life, and better performance under impact and high stress conditions.
Key Features
- Exceptional Toughness: YXR33 has higher impact strength than standard high-speed steels, making it ideal for tools subjected to high mechanical stress.
- Superior Wear Resistance: The optimized vanadium and molybdenum composition enhances abrasion resistance, extending tool life.
- Excellent Thermal Stability: The addition of cobalt (Co) and tungsten (W) allows YXR33 to maintain hardness and performance at high temperatures.
- Extended Tool Life: The combination of toughness, wear resistance, and thermal stability ensures longer durability in cutting and forming applications.
Chemical Composition
| Element | Composition (%) |
| Carbon (C) | 0.90 – 1.10 |
| Silicon (Si) | 0.20 – 0.50 |
| Manganese (Mn) | 0.20 – 0.50 |
| Chromium (Cr) | 4.50 – 5.50 |
| Molybdenum (Mo) | 4.50 – 5.50 |
| Tungsten (W) | 1.00 – 2.00 |
| Vanadium (V) | 2.20 – 3.00 |
| Cobalt (Co) | 7.50 – 8.50 |
Key Features in Composition:
- High Vanadium (V): Increases wear resistance and toughness.
- Cobalt (Co) Addition: Enhances heat resistance and maintains hardness at high temperatures.
- Balanced Molybdenum (Mo) & Tungsten (W): Improves toughness and thermal stability.
Mechanical Properties
| Property | Value |
| Hardness (Annealed) | ≤ 269 HB |
| Hardness (Hardened & Tempered) | 63 – 67 HRC |
| Wear Resistance | Excellent |
| Toughness | Superior |
| Compressive Strength | High |
| Thermal Stability | Excellent |
- Outstanding balance between toughness and wear resistance
- Higher impact resistance compared to conventional high-speed steels
- Excellent performance in high-stress applications
- Superior heat resistance for high-temperature working conditions
YXR33 vs. Other High-Speed Steels
| Property | YXR33 | SKH51 (M2) | SKH55 (M35) | ASP23 (PM Steel) |
| Hardness (HRC) | 63-67 | 62-65 | 63-66 | 64-67 |
| Wear Resistance | Excellent | Good | Very Good | Excellent |
| Toughness | Superior | Moderate | Good | Moderate |
| Thermal Stability | High | Moderate | High | High |
| Impact Strength | Outstanding | Moderate | Good | Moderate |
| Applications | Cold/Hot Work, Cutting, Forging | General Cutting | High-Speed Cutting | Powder Metallurgy Steel for Cutting |
Why Choose YXR33?
- Better toughness and impact resistance than SKH51 (M2) and SKH55 (M35).
- Higher wear resistance than standard high-speed steels, making it ideal for high-impact applications.
- Superior thermal stability, extending tool life in high-temperature environments.
Applications
YXR33 is widely used in industries requiring high-performance tooling materials for cutting, forming, and impact applications.
Cold & Hot Work Tooling
- Punches and Dies for high-impact stamping
- Cold forming tools for high-strength steel processing
- Hot work dies requiring superior toughness
Cutting Tools & Industrial Blades
- High-performance cutting tools for high-speed machining
- Metal shearing blades
- Punching and slitting tools
Mold Components & Wear Parts
- Plastic mold parts subjected to high wear
- Precision wear-resistant parts
Forging & Extrusion Tools
- Forging dies and extrusion dies exposed to extreme stress
- Hot stamping dies
Heat Treatment Process
Annealing
- Heat to 850–900°C, then slowly cool in a furnace.
Hardening
- Preheat at 600–700°C, then heat to 1,080–1,120°C, followed by oil or air quenching.
Tempering
- Temper at 540–620°C (multiple cycles) to achieve 63-67 HRC.
Surface Treatment
- PVD or CVD Coating (TiN, TiCN) for additional wear resistance.
- Cryogenic Treatment to improve hardness retention.
Alternative Materials
- YXR7 (Hitachi Metals): A lower cobalt version of YXR33 with slightly lower heat resistance but similar toughness.
- ASP23 (Powder Metallurgy Steel): A high-performance powder metallurgy (PM) steel with better wear resistance but lower toughness than YXR33.
- HAP40 (Powder Metallurgy Steel): Offers superior hardness and wear resistance, but less toughness than YXR33.
- SKH51 (AISI M2): A general-purpose high-speed steel, but not as tough or heat-resistant as YXR33.
- SKH55 (AISI M35): A cobalt-added high-speed steel, but lower impact strength than YXR33.
Conclusion
YXR33 is a high-performance high-speed tool steel with exceptional toughness, wear resistance, and heat resistance, making it ideal for high-impact and high-temperature tooling applications. Its superior mechanical properties and extended tool life make it a premium choice for demanding industries such as metal stamping, forging, and cutting tool manufacturing.
Best Choice for: Punches, dies, cutting tools, cold forming, and forging applications
Why Choose YXR33? Unmatched toughness, wear resistance, and heat resistance for extreme working conditions
