1. Key Properties:
Chromium-Molybdenum Alloy Steel: 9Cr-1Mo-V-Cb-N is a high-performance alloy steel that combines chromium, molybdenum, and vanadium for enhanced strength, heat resistance, and toughness.
High-Temperature Strength: The alloy is specifically designed to maintain its strength at elevated temperatures, making it ideal for high-temperature applications in power generation and industrial processes.
Excellent Creep Resistance: The material's composition offers exceptional resistance to creep at high temperatures, which is crucial for components exposed to long-term stress and heat.
Good Weldability: 9Cr1MoVCB-N is generally weldable, though preheat and post-weld heat treatment may be required to prevent cracking and ensure strong weld joints.
Enhanced Toughness: The addition of vanadium improves toughness, helping the material resist impact and maintain its mechanical properties under dynamic loading conditions.
Corrosion and Oxidation Resistance: While primarily designed for high-temperature strength, 9Cr1MoVCB-N also offers good resistance to oxidation and certain forms of corrosion, making it suitable for high-temperature environments.
2. Applications/Industries:
Power Generation: 9Cr1MoVCB-N is commonly used in power plants for components like boiler tubes, superheaters, reheaters, and steam pipelines where high temperature and pressure resistance are required.
Petrochemical: This steel is used for pipelines, reactor vessels, and heat exchangers in the petrochemical industry, especially for systems exposed to high temperatures.
Oil & Gas: It is also applied in the oil and gas industry for critical piping and equipment that must withstand high-pressure, high-temperature environments.
Chemical Processing: 9Cr1MoVCB-N is utilized in the chemical industry for manufacturing components exposed to elevated temperatures and corrosive chemicals, such as reactors and heat exchangers.
Heavy Machinery: Used in the construction of heavy machinery that is exposed to high heat and mechanical stress, ensuring parts maintain integrity under harsh operating conditions.
3. Certifications/Standards:
ASTM A335: 9Cr1MoVCB-N is often produced under the ASTM A335 standard, which specifies seamless ferritic alloy-steel pipes for high-temperature service, ensuring it meets the necessary mechanical and chemical properties.
ISO 9001: The material is manufactured in compliance with ISO 9001 standards, ensuring reliable quality management processes and consistent product quality.
4. Chemical Composition:
Carbon (C): 0.09% – 0.15%
Manganese (Mn): 0.30% – 0.60%
Chromium (Cr): 8.50% – 9.50%
Molybdenum (Mo): 0.90% – 1.10%
Vanadium (V): 0.20% – 0.30%
Silicon (Si): 0.30% max
Phosphorus (P): 0.020% max
Sulfur (S): 0.010% max
Iron (Fe): Balance
5. Technical Specifications:
Yield Strength:
9Cr1MoVCB-N: 450–600 MPa (depending on heat treatment and thickness)
Tensile Strength:
9Cr1MoVCB-N: 600–750 MPa
Hardness:
9Cr1MoVCB-N: Typically ranges between 190–240 HB (Brinell hardness) depending on the heat treatment.