ALLOYS

P22 (P22, WP22, F22) (2 – 1/4% Cr • 1% Mo)

Used primarily for their stress/rupture properties, P22 can be held at high temperatures with high pressure and can also have a strong resistance to rupturing. In addition, 2 1/4% chrome can be used for elevated temperatures, creep and corrosion resistance process and service. Typical temperatures applications range from -20° to 1100° F

Availability – P22

Seamless Pipe: 1/2” – 24”

Butt-Weld Fittings: 1/2” – 24”

Flanges: 1/2” – 24” Pressure

Fittings: 1/8” – 4”

Specifications – P22

ASTM / ASME A335, A182, A234

Chemical Composition – P22

C Cr Mn Mo P S Si
Max Max Max Max Max
.05% – .15% 1.90% – 2.60% .30% – .60% .87% – 1.13% 0.040% 0.040% 0.50%

Typical Applications – P22

  • Main steam and hot reheat systems
  • Process heater tubing

Tensile Requirements – P22

Tensile Strength (KSI): 60

Yield Strength (KSI): 30

KSI can be converted to MPA (Megapascals) by multiplying by 6.895.





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