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Chemical composition and mechanical properties of 25Cr2Mo1VA
**Chemical Composition and Mechanical Properties of 25Cr2Mo1VA Steel, Main Applications**
**Material Name:** 25Cr2Mo1VA
**Standard:** GB/T 3077-1999 (High Quality Steel)
**Chemical Composition:**
- **Carbon (C):** 0.22–0.29%
- **Silicon (Si):** 0.17–0.37%
- **Manganese (Mn):** 0.50–0.80%
- **Molybdenum (Mo):** 0.90–1.10%
- **Chromium (Cr):** 2.10–2.50%
- **Vanadium (V):** 0.30–0.50%
- **Phosphorus (P):** ≤0.035% (residual)
- **Sulfur (S):** ≤0.035% (residual)
- **Copper (Cu):** ≤0.30% (residual)
- **Nickel (Ni):** ≤0.30% (residual)
**Heat Treatment:**
- **Quenching Temperature:** 900°C
- **Coolant:** Oil
- **Tempering Temperature:** 640°C
**Mechanical Properties:**
- **Tensile Strength (σb):** ≥930 MPa
- **Yield Strength (σs):** ≥785 MPa
- **Elongation (δ5):** ≥14%
- **Reduction of Area (ψ):** ≥55%
- **Impact Toughness (Aku2):** ≥63 J
- **Brinell Hardness (HBS 100/3000):** ≤241 (annealed or high-temperature tempered state)
**Key Features:**
25Cr2Mo1VA is a medium-carbon heat-resistant steel known for its high strength and toughness. It performs well at temperatures below 500°C, with no tendency toward hot brittleness. The steel has good hardenability, machinability, and moderate cold deformation plasticity, but its weldability is relatively poor.
It is typically used in the quenched and tempered condition, or after normalization and high-temperature tempering. This material is commonly applied in high-temperature environments, such as:
- Nuts, bolts, and studs operating under temperatures up to 530°C
- Fasteners working at temperatures up to 510°C
- Turbine rotors, sleeves, main steam valves, and control valves
- Nitriding applications for parts like valve stems and gears
**Editor:** Hardware Business Network Information Center
**Source:** [http://news.chinawj.com.cn](http://news.chinawj.com.cn)
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This steel grade is widely used in industrial and mechanical applications where durability and performance at elevated temperatures are essential. Its combination of strength, toughness, and heat resistance makes it ideal for critical components in power generation, automotive, and heavy machinery industries.