EN10216-2 P235GH TC1 Alloy Steel Heat Exchanger Tube , Power Plants

EN 10216-2: This is a European standard specifying the requirements for seamless tubes made from carbon and alloy steel for use in the manufacture of pressure equipment and piping systems. It applies to tubes used for high-temperature service, where pressure resistance and good mechanical properties are necessary.

P235GH: This indicates the material grade of the tube. It is a non-alloy steel grade that offers good weldability, moderate strength, and excellent performance at high temperatures. The "P" designation refers to the tube’s application for pressure purposes, while "235" refers to the minimum yield strength of the material (235 MPa) at room temperature.

GH: The "GH" suffix indicates that the steel grade is designed for high-temperature applications (typically up to around 400°C or more), making it suitable for use in heat exchangers, boilers, and other high-pressure equipment that operate under elevated temperatures.

Material Composition:

• Tensile Strength (R_m): 360–510 MPa
• Yield Strength (R_eH): ≥ 235 MPa
• Elongation: 22% (in 5.65 √S)
• Hardness: Typically ≤ 180 HB

Mechanical Properties:

• Yield Strength: The P235GH material grade typically has a yield strength of at least 235 MPa at room temperature, which makes it suitable for medium-pressure applications.
• Tensile Strength: The tensile strength of P235GH steel is typically in the range of 360-510 MPa, ensuring the tube can handle mechanical stresses.
• Temperature Resistance: P235GH is designed for elevated temperature environments, providing resistance to creep and high-temperature oxidation.

Key Characteristics:

• High-Temperature Performance: The P235GH material is specifically designed to perform well at elevated temperatures, offering stability under thermal expansion.
• Excellent Weldability: This grade of steel has good weldability, allowing for ease of fabrication, which is essential in pressure equipment manufacturing.
• Durability and Reliability: The seamless construction, combined with the TC1 testing requirements, ensures a tube that is robust, resistant to defects, and reliable in critical applications.

Applications:

1. Boilers:

High-Pressure Boilers: The P235GH grade material is designed for use in boiler systems, especially those that operate at high temperatures and pressures. This makes it ideal for fire-tube and water-tube boilers, commonly used in power plants and industrial heating systems.

2. Heat Exchangers:

Industrial Heat Exchangers: P235GH tubes are commonly used in heat exchangers where heat transfer efficiency and resistance to high-temperature fluids are critical. The tubes help in transferring heat between fluids while maintaining structural integrity at elevated temperatures.

3. Pressure Vessels:

Pressure Vessel Construction: These tubes are used to manufacture pressure vessels that operate under high pressure and temperature conditions. Pressure vessels are integral in industries like chemical processing, petroleum refining, and gas storage.

4. Piping Systems:

High-Temperature Piping: These tubes are used in piping systems that transport high-temperature fluids, such as steam or hot gases, within power plants or industrial systems. Their resistance to corrosion and ability to handle elevated temperatures make them a good choice for steam lines and other heat-sensitive piping.