What is A335 P11 Seamless Pipe?

ASTM A335 Grade P11 is also commonly known as ASME SA335 Grade P11 Pipes; it is a seamless ferriticloy-steel pipe that mainly has high-temperature applications. The UNS designation for this grade P11 is K11597.
The key elements of P11 pipes are carbon, manganese, phosphorus, sulfur, silicon, chromium and molybdenum. Its key components are chrome and moly that provide it with strength, resistance against wear, hardenability, and corrosion resistance properties. It is also possible to heat treat this alloy. The chromium within the alloy increases its resistance to oxidation, allowing it to be used in corrosive high-temperature environments. Molybdenum addition enhances strength and wear resistance.

ASTM A335 P11 Equivalent

Scope of ASTM A335 GR.P11

This specification covers nominal wall and minimum wall seamless ferritic alloy-steel pipe intended for high-pressure service. temperature service. Pipe ordered to this specification shall be suitable for bending, flanging (vanstoning), and similar forming operations, and for fusion welding. Selection will depend upon design, service conditions, mechanical properties, and high-temperature characteristics.