ASTM A213 T9 Alloy Steel Seamless Boiler Tube ,Oil Refinary Application
Grade A213 T9 is a specification for seamless ferritic and austenitic alloy-steel boiler, superheater, and heat-exchanger tubes. This grade is characterized by its excellent high-temperature strength and resistance to oxidation and corrosion, making it suitable for demanding thermal and mechanical applications.
ASTM A213 T9 stainless steel boiler tubes are particularly effective in the power generation, petrochemical, chemical processing, industrial boiler, oil and gas, and marine industries. Their ability to withstand high temperatures and corrosive environments ensures long-term reliability and efficiency in demanding applications.
Chemical Composition:
Grade | Cr | Mo | C | Mn | P | S | Si | Ni | Fe |
A213 T9 | 8.0-10.0% | 0.9-1.10% | 0.15% maximum | 0.30-0.60% | ≤ 0.25% | ≤ 0.25% | 0.50% maximum | ≤ 0.4% | Balance |
Mechanical Properties:
Grade | Tensile Strength | Yield Strength | Elongation | Hardness |
A213 T9 | Minimum 415 MPa (60,200 psi) | Minimum 220 MPa (31,900 psi) | 30% minimum in 50 mm | ≤ 85 HRB (Rockwell Hardness B) |
Key Features:
- High-Temperature Strength: Ensures reliable performance in high-temperature applications.
- Oxidation Resistance: Provides excellent resistance to oxidation in demanding environments.
- Creep Resistance: High resistance to creep, ensuring long-term reliability under continuous high-temperature exposure.
- Durability: High tensile strength and toughness provide long service life in demanding conditions.
- Weldability: Good weldability allows for easy fabrication and repair of boiler tubes.
- Versatility: Suitable for a wide range of high-temperature and high-pressure applications across various industries.
Applications:
1. Industrial Boilers
- Heating Systems: Utilized in industrial heating systems, including boilers and furnaces, where high-pressure steam or hot water is generated.
- Process Piping: Suitable for high-temperature process piping in various industrial applications.
- Superheaters: Used in superheater tubes exposed to high temperatures and pressures.
2. Power Generation Industry
- Boilers: Used in the construction of boilers for power plants, especially for high-pressure and high-temperature steam generation.
- Superheaters: Ideal for superheater tubes that need to withstand high temperatures and pressures.
- Steam Pipes: Utilized in steam piping systems that operate at high temperatures and pressures.
3. Chemical Processing Industry
- Reactors and Vessels: Ideal for reactors and pressure vessels exposed to high temperatures and aggressive chemicals.
- Piping Systems: Suitable for high-temperature and high-pressure piping systems transporting steam and hot fluids.
- Heat Recovery Systems: Used in heat recovery systems that utilize high-temperature steam.
