ASTM A213 T92 (ASME SA213 T92) is a high-chromium alloy seamless steel pipe material, containing 8.5–9.5% Cr, 0.2–0.5% W and Mo, V, Nb, and other alloying elements. After normalizing and tempering, this steel pipe possesses ultra-high high-temperature strength, excellent creep resistance, and good thermal stability.
T92 steel pipes are commonly used for critical components of high-pressure and ultra-high-pressure boilers, heat exchangers, and superheaters, and are widely applied in the power, petrochemical, and energy industries.
UNS number is K92460.
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The chemical composition requirements of T92 are highly stringent. Precise control of key elements such as C, Cr, Mo, W, V, Nb, B, and N ensures the overall performance of the steel pipes. Chemical composition testing shall be conducted in accordance with the applicable requirements of ASTM A1016.
| ASTM A213 T92 Chemical Composition | |||
| C | 0.07 ~ 0.13 % | V | 0.15 ~ 0.25 % |
| Mn | 0.30 ~ 0.60 % | B | 0.001 ~ 0.006 % |
| P | 0.020 % max | Nb | 0.04 ~ 0.09 % |
| S | 0.010 % max | N | 0.030 ~ 0.070 % |
| Si | 0.50 % max | Al | 0.02 % max |
| Ni | 0.40 % max | W | 1.5 ~ 2.0 % |
| Cr | 8.5 ~ 9.5 % | Ti | 0.01 % max |
| Mo | 0.30 ~ 0.60 % | Zr | 0.01 % max |
| Mechanical Properties | ASTM A213 T92 | |
| Tensile Requirements | Tensile Strength | 90 ksi [620 MPa] min |
| Yield Strength | 64 ksi [440 MPa] min | |
| Elongation in 2 in. or 50 mm |
20 % min | |
| Hardness Requirements | Brinell/Vickers | 250 HBW / 265 HV max |
| Rockwell | 25 HRC max | |
| Flattening Test | One flattening test shall be made on specimens from each end of one finished tube, not the one used for the flaring test, from each lot. | |
| Flaring Test | One flaring test shall be made on specimens from each end of one finished tube, not the one used for the flattening test, from each lot. | |
Each tube shall be subjected to the nondestructive electric test or the hydrostatic test. The type of test to be used shall be at the option of the manufacturer, unless otherwise specified in the purchase order.
Common non-destructive testing methods include Ultrasonic Testing (UT) and Eddy Current Testing (ET), among others.
Manufacturer and Condition
Heat Treatment
ASTM A213 T92 steel pipes shall be made by the seamless process and shall be either hot finished or cold finished, as specified.
| Grade | ASTM A213 T92 |
| Heat Treat Type | normalize and temper |
| Normalizing Temperature | 1900 ~ 1975 ℉ [1040 ~ 1080 ℃] |
| Tempering Temperature | 1350 ~ 1470 ℉ [730 ~ 800 ℃] |
Heat treatment shall be carried out separately and in addition to any heating applied for hot forming.
All T92 steel pipes shall be normalized and tempered. The specific requirements are as shown in the table below.
Dimension Range
ASTM A213 T92 tubing sizes and wall thicknesses are usually furnished with 3.2 mm in inside diameters to 127 mm in outside diameters, and minimum wall thicknesses from 0.4 mm to 12.7 mm, inclusive, in minimum wall thickness.
T92 pipes of other sizes are also permitted under ASTM A213, as long as all other requirements of the standard are met.
Wall Thickness Tolerance
Permissible variations from the specified minimum wall thickness shall be:
| Outside Diameter | Wall Thickness | |||
| 2.4 mm and under | 2.4 to 3.8 mm, incl | Over 3.8 to 4.6 mm, incl | Over 4.6 mm | |
| Hot-finished Seamless Tubes | ||||
| 100 mm and under | 0 ~ +40 % | 0 ~ +35 % | 0 ~ +33 % | 0 ~ +28 % |
| Over 100 mm | — | 0 ~ +35 % | 0 ~ +33 % | 0 ~ +28 % |
| Cold-finished Seamless Tubes | ||||
| 38.1mm and under | 0 ~ +20 % | |||
| Over 38.1 mm | 0 ~ +22 % | |||
Permissible variations from the specified average wall thickness shall be:
| Type | Specified Outside Diameter | Tolerance from specified |
| Cold-formed tubes average wall thickness Tolerance | ±10 % | |
| Hot-formed tubes average wall thickness Tolerance | 10.3 to 73.0 mm incl, all t/D ratios | -12.5 ~ 20 % |
| Above 73.0 mm. t/D ≤ 5 % | -12.5 ~ 22.5 % | |
| Above 73.0 mm. t/D ＞ 5 % | -12.5 ~ 15 % | |
ASTM A213 T92 pipes are primarily used in industrial environments that involve high temperatures and high pressures. Common applications include:
Power industry: Main steam and reheat steam pipes in supercritical and ultra-supercritical boilers.
Petrochemical industry: High-pressure reactor vessels and cracking furnace tubes.
Natural gas and refining industry: High-temperature gas transportation pipelines.
Other high-temperature, high-pressure equipment: Heat exchanger tubes in corrosive high-temperature environments.
| ASME | ASTM | EN | GB |
| ASME SA213 T92 | ASTM A335 P92 | EN 10216-2 X10CrWMoVNb9-2 | GB/T 5310 10Cr9MoW2VNbBN |
Material: ASTM A213 T92 seamless steel pipes and fittings;
Size: 1/8" to 24", or customized according to your requirements;
Length: Random length or cut to order;
Packaging: Black coating, beveled ends, pipe end protectors, wooden crates, etc.
Support: IBR certification, TPI inspection, MTC, cutting, processing, and customization;
MOQ: 1 m;
Payment Terms: T/T or L/C;
Price: Contact us for the latest T92 steel pipe prices.
