ASTM A335 Grade P9 Alloy Steel Seamless Tube , For High-Temperature Service

ASTM A335 Grade P9 Alloy Steel Seamless Tube is a high-quality alloy steel pipe designed for high-temperature applications. It is part of the ASTM A335 standard, which specifies seamless ferritic alloy-steel pipes intended for high-temperature service. Grade P9, specifically, is an alloy containing chromium and molybdenum, which provide excellent strength, oxidation resistance, and thermal stability.

Key Features:

• Material Composition:

  • Chromium (Cr): Enhances oxidation and corrosion resistance.
  • Molybdenum (Mo): Improves strength and temperature resistance.

• Properties:

  • High-temperature strength and durability.
  • Good resistance to oxidation, corrosion, and creep.
  • Excellent weldability and machinability.

• Applications:

  • Commonly used in power plants, refineries, and petrochemical industries.
  • Ideal for high-pressure and high-temperature environments, such as boilers, heat exchangers, and superheaters.

• Standards and Specifications:

  • Standard: ASTM A335
  • Grade: P9
  • Type: Seamless
  • Dimensions: Available in various sizes and thicknesses as per customer requirements.
  • Heat Treatment: Normalizing and tempering or other specified treatments for enhanced performance.

• Mechanical Properties:

  • Tensile Strength: Minimum 415 MPa (60,200 psi).
  • Yield Strength: Minimum 205 MPa (29,700 psi).
  • Elongation: Varies depending on pipe dimensions but ensures flexibility under stress.

Chemical composition of Astm A335 Grade P9

Mechanical properties of Astm A335 Grade P9

Equivalent of Astm A335 Grade P9

Advantages:

• High performance in extreme temperature and pressure conditions.
• Long service life due to superior material properties.
• Complies with industry standards for reliability and safety.