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20Cr1Mo1VTiB alloy steel is a high-strength, Cr-Mo-V-Ti-B alloy steel engineered for high-temperature, high-pressure, and heavy-load applications. With the addition of titanium (Ti) and boron (B), this steel exhibits enhanced grain refinement, improved creep resistance, and excellent long-term stability, making it ideal for critical components in power plants, turbines, and heavy machinery.
It is widely used for rotor shafts, steam turbine rotors, pressure-bearing components, and other structural parts where mechanical reliability and high-temperature performance are essential.
Technical Specifications
➤ Standard
GB/T Alloy Structural Steel
➤ Available Forms
Forged Rotors & Shafts
Round Bars
Heavy Forgings
Custom Machined Parts
Chemical Composition (Typical)
| Element | Content (%) |
|---|---|
| C | 0.18 – 0.24 |
| Cr | 0.90 – 1.20 |
| Mo | 0.25 – 0.40 |
| V | 0.15 – 0.25 |
| Ti | 0.02 – 0.05 |
| B | 0.001 – 0.003 |
| Si | ≤ 0.40 |
| Mn | ≤ 0.70 |
| Fe | Balance |
Key Features & Advantages
✅ High Strength & Fatigue Resistance
Suitable for rotor shafts and heavy-load components
✅ Excellent Creep Resistance
Maintains structural integrity under long-term high temperature
✅ Grain Refinement & Thermal Stability
Titanium and boron additions refine grain size, improving high-temperature toughness
✅ High Load-Bearing Capacity
Ideal for critical rotating machinery and pressure-bearing components
Comparison Guide – 20Cr1Mo1VTiB vs 21CrMoVA vs 25Cr2Mo1VA
| Property | 20Cr1Mo1VTiB | 21CrMoVA | 25Cr2Mo1VA |
|---|---|---|---|
| Alloy Type | Cr-Mo-V-Ti-B | Cr-Mo-V | Cr-Mo-V |
| Strength | High | High | Very High |
| Creep Resistance | High | High | Very High |
| Grain Refinement | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐⭐⭐ |
| Temperature Capability | 500–550°C | 500–550°C | 600°C+ |
| Application | Rotors & Shafts | Rotors & Shafts | Ultra-critical components |
👉 Key Insight:
20Cr1Mo1VTiB → refined grain, better fatigue & creep for moderate high-temperature applications
21CrMoVA → general high-strength rotor steel
25Cr2Mo1VA → ultra high-strength & temperature-critical parts
Applications
⚡ Power Generation
Steam turbine rotors
High-pressure shafts
Generator components
🏭 Heavy Industry
Large forged shafts
Pressure-bearing machinery components
Rotating equipment
Inspection & Quality Assurance
Chemical Composition Analysis (PMI)
Mechanical Property Testing
Ultrasonic Testing (UT)
Hardness Testing
Impact Testing (Charpy)
Metallographic Examination
Product Delivery Standards
Heavy-duty export packaging
Anti-corrosion treatment
Heat number traceability
EN 10204 3.1 / 3.2 certification
FAQ
1. What is 20Cr1Mo1VTiB steel used for?
It is used for high-strength, high-temperature rotors, shafts, and heavy-duty pressure components.
2. How does 20Cr1Mo1VTiB differ from 21CrMoVA?
Titanium and boron improve grain refinement and fatigue resistance
Suitable for moderate high-temperature applications
21CrMoVA emphasizes mechanical strength under heavy load
3. Is 20Cr1Mo1VTiB suitable for turbine rotors?
Yes, it is widely used for rotor shafts in power plants.
4. What is the temperature range?
Reliable performance in 500–550°C working environments.
5. What heat treatment is required?
Quenching
Tempering
Ensures high strength, hardness, and toughness.
6. What role do Ti and B play?
Titanium (Ti) → grain refinement, enhanced toughness
Boron (B) → improves hardenability and creep strength
7. What forms are available?
Forged rotors
Bars
Heavy forgings
Custom machined components
8. What industries use this steel?
Power generation
Heavy machinery manufacturing
Petrochemical and chemical industry
Contact Us
Looking for 20Cr1Mo1VTiB Alloy Steel Forgings, Rotors, or Shafts?
We provide:
Factory-direct pricing
Custom heavy forging solutions
Fast global delivery
Technical support for turbine & power plant projects
👉 Contact us now for quotation, datasheet, and expert consultation.
+8615769214734
office@dongmjd.com
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