25Cr2Mo1VA alloy steel is an advanced chromium-molybdenum-vanadium (Cr-Mo-V) heat-resistant steel, developed for ultra-high temperature and high-stress applications in modern power plants and heavy engineering systems.
With increased molybdenum (Mo) content compared to 25Cr2MoVA, this grade delivers enhanced creep resistance, improved high-temperature strength, and superior long-term stability, making it ideal for steam turbine rotors, high-pressure shafts, and critical load-bearing components operating under extreme service conditions.
Technical Specifications
➤ Standard
GB/T Alloy Structural Steel
➤ Available Forms
Forged Rotors
Heavy Shafts
Round Bars
Custom Forgings / CNC Machined Parts
Chemical Composition (Typical)
| Element | Content (%) |
|---|---|
| C | 0.22 – 0.29 |
| Cr | 2.0 – 2.5 |
| Mo | 1.0 – 1.3 |
| V | 0.15 – 0.30 |
| Si | ≤ 0.40 |
| Mn | ≤ 0.70 |
| Fe | Balance |
Key Features & Advantages
✅ Enhanced Creep Resistance
Higher Mo content → better long-term performance at high temperature
✅ Superior High-Temperature Strength
Suitable for 550–620°C service environments
✅ Excellent Thermal Stability
Maintains microstructure under prolonged exposure
✅ High Load-Bearing Capacity
Ideal for critical heavy-duty rotating components
Comparison Guide – 25Cr2Mo1VA vs 25Cr2MoVA vs 21CrMoVA
| Property | 25Cr2Mo1VA | 25Cr2MoVA | 21CrMoVA |
|---|---|---|---|
| Mo Content | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐⭐ |
| Strength | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐ |
| Creep Resistance | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐⭐⭐ |
| Temperature Capability | 600°C+ | 550–600°C | 500–550°C |
| Application | Ultra critical | Heavy duty | Standard rotor |
👉 Key Insight:
25Cr2Mo1VA = upgraded version of 25Cr2MoVA
Best for higher temperature + longer service life
Preferred in modern high-efficiency power plants
Applications
⚡ Power Generation Industry
Steam turbine rotors (high-efficiency units)
High-pressure shafts
Supercritical / ultra-supercritical systems
🏭 Heavy Engineering
Large forged components
High-load rotating systems
Critical structural parts
Inspection & Quality Assurance
Chemical Composition Testing
Mechanical Property Testing
Ultrasonic Testing (UT)
Impact Testing (Charpy)
Hardness Testing
Metallographic Analysis
Product Delivery Standards
Heavy-duty export packaging
Anti-rust protection
Full traceability (heat number)
EN 10204 3.1 / 3.2 certification
FAQ
1. What is 25Cr2Mo1VA alloy steel used for?
It is used for ultra-critical high-temperature components, especially in advanced power plant systems.
2. What is the difference between 25Cr2Mo1VA and 25Cr2MoVA?
25Cr2Mo1VA contains higher molybdenum, resulting in:
Better creep resistance
Higher temperature capability
Longer service life
3. What is the temperature limit of 25Cr2Mo1VA?
It can operate in environments up to 600°C or higher, depending on conditions.
4. Is 25Cr2Mo1VA stronger than 21CrMoVA?
Yes. It offers:
Higher strength
Better high-temperature performance
5. Is this material suitable for turbine rotors?
Yes. It is one of the preferred materials for high-efficiency turbine rotors.
6. What heat treatment is required?
Typical processes include:
Quenching
Tempering
to achieve optimal mechanical properties.
7. What industries use 25Cr2Mo1VA steel?
Power generation (supercritical plants)
Heavy machinery
Petrochemical
8. What forms are available?
Forged rotors
Bars
Heavy forgings
Custom-machined parts
Contact Us
Looking for 25Cr2Mo1VA Alloy Steel Forgings, Rotors, or Bars?
We provide:
Factory-direct pricing
Custom heavy forging solutions
Fast global delivery
Engineering support for power projects
👉 Contact us now for quotation, datasheet, and technical consultation.
+8615769214734
office@dongmjd.com
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