ASTM A691 1 1/4 CrCL22 Welded For High-Pressure Service At High Temperatures

It is categorized as a low-alloy steel with added chromium, molybdenum, and copper to enhance its mechanical properties and resistance to high temperatures.

Due to its high-pressure and high-temperature capabilities, ASTM A691 1 1/4 CrCL22 is commonly used in various applications, including:

Oil and Gas Industry: It is utilized in oil and gas refineries, pipelines, and offshore platforms where the pipes are exposed to harsh conditions and high-pressure environments.

Petrochemical Industry: The material is suitable for applications involving the transportation of chemicals and gases at elevated temperatures and pressures.

Power Generation: ASTM A691 1 1/4 CrCL22 is used in power plants for steam pipelines and other high-temperature applications.

Property	Value
Tensile Strength	65 ksi (450 MPa) min
Yield Strength	35 ksi (240 MPa) min
Elongation	20% min
Hardness (HB)	187 max
Impact Toughness	27 J (20 ft-lbf) min at -50°C (-58°F)

While ASTM A691 1 1/4 CrCL22 is a widely used material, there are alternative grades available that may be suitable for specific applications. Some possible alternative grades include:

ASTM A335 P11: This grade is a seamless ferritic alloy steel pipe for high-temperature service. It offers similar high-temperature resistance and is commonly used in power plants and refineries.

ASTM A387 Grade 11: This grade is a pressure vessel grade steel used in elevated temperature service. It provides excellent resistance to corrosion and high-temperature environments.

ASTM A213 T11: This grade is a seamless ferritic and austenitic alloy steel boiler, superheater, and heat-exchanger tube. It is suitable for high-temperature applications in various industries.

 

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