YUHONG HOLDING GROUP CO., LTD
YUHONG HOLDING GROUP CO., LTD
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ASTM A335 P22 High Frequency Welding Fin Tube , Cooling Systems
ASTM A335 P22: The tube is made from P22 steel, a chromium-molybdenum (Cr-Mo) alloy steel that is specifically designed for high-temperature service.ASTM A335 P22 contains approximately 2.25% chromium and 1% molybdenum, which provide enhanced resistance to creep, oxidation, and corrosion at elevated temperatures, making it ideal for use in pressure vessels, steam boilers, and other high-temperature systems.
ASTM A335 is the specification for seamless ferritic alloy-steel pipe used in high-temperature service. P22 is a subset of this standard, typically used in power plants and chemical processing industries where the material must withstand both high temperature and pressure.
Chemical Composition:
| Grade | C | Mn | P | S | Si | Cr | Mo |
| ASTM A335 P22 | 0.05 - 0.15% | 0.30 - 0.60% | Max. 0.025% | Max. 0.025% | 0.50% (Max) | 1.90 - 2.60% | 0.87 - 1.13% |
Mechanical Properties:
| Grade | Tensile Strength | Yield Strength | Elongation | Hardness |
| ASTM A335 P22 | Min. 415 MPa (60,200 psi) | Min. 205 MPa (29,700 psi) | Min. 35% (in 2 inches) | Max. 250 HB / 25 HRC |
Key Features:
High Thermal Efficiency: The serrated design disrupts the boundary layer, allowing for better heat transfer.
Corrosion Resistance: Depending on the environment, additional coatings or treatments may be applied to improve resistance.
Durability: Designed to withstand harsh operating conditions such as high temperatures, pressures, and corrosive environments.
Applications:
