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ASTM A213 Grade T122 seamless alloy steel tubes are carbon steel tubes enhanced with chromium, molybdenum, and sometimes vanadium, commonly referred to as chrome-moly tubes. These tubes comply with ASTM A213 specifications, which cover seamless ferritic and austenitic alloy-steel tubes for boilers, superheaters, and heat exchangers.
Super Steel Manufacturing Co.,Ltd is professional ASTM A213 T122 seamless alloy pipes manufacturer, for more details, please contact:sales@super-steels.com
High-Temperature Applications and Mechanical Properties
Designed for high-temperature service, ASTM A213 T122 seamless tubes undergo heat treatment processes such as full annealing, isothermal annealing, or normalization followed by quenching and tempering. These treatments enhance their mechanical properties, ensuring durability in demanding environments.
ASTM A213 T122 tubes typically contain 10.00-11.50% chromium and 0.25-0.60% molybdenum, providing excellent oxidation resistance and high-temperature strength. They exhibit a minimum tensile strength of 620 MPa and a minimum yield strength of 400 MPa, making them suitable for high-pressure and high-heat applications.
Chemical Composition (%) of ASTM A213 T122 Alloy Steel
The exact chemical composition of T122 alloy steel may vary based on manufacturing standards and specific requirements. However, it generally includes the following elements:
|
UNS Designation |
K11562 |
|
Carbon |
0.07-0.14 |
|
Manganese |
0.70 max |
|
Phosphorus |
0.02 |
|
Sulfur |
0.01 |
|
Silicon |
0.50 max |
|
Nickel |
… |
|
Chromium |
10.00-11.50 |
|
Molybdenum |
0.44-0.65 |
|
Vanadium |
… |
|
Boron |
… |
|
Niobium |
… |
|
Nitrogen |
… |
|
Aluminum |
… |
|
Tungsten |
… |
|
Other Elements |
… |
Mechanical Properties For ASTM A213 T122 Low Alloy Steel
ASTM A213 T122 seamless alloy pipes are available from various suppliers and manufacturers. They come in different sizes, specifications, and quantities to meet specific project requirements.
|
Tensile strength(min) |
620Mpa |
|
Yield strength(min) |
220Mpa |
|
Elongation |
20% |
|
Delivery condition |
annealed |
ASTM A213 Grade T122 seamless alloy steel tubes are designed with a minimum wall thickness and are used in boilers, superheaters, and heat exchangers. This specification covers both ferritic and austenitic steel tubes, including various grades such as T5, T11, T22, and T91, which are tailored for high-temperature applications.
Size and Thickness Specifications of ASTM A213 T122 Alloy Steel Pipes
The standard tubing sizes and thicknesses for ASTM A213 Grade T122 typically range as follows:
Inside Diameter: 1 mm to 8 mm (approx. 3.2 mm)
Outside Diameter: Up to 5 inches (approx. 127 mm)
Wall Thickness: 0.015 to 0.500 inches (approx. 0.4 to 12.7 mm)
Tubes of non-standard dimensions may also be supplied, provided they meet all other requirements of the ASTM A213 specification.
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