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ASME SA213 T22 Alloy Steel Seamless Tube

Also referred to as 2 1/4 Chrome 1 Moly, the T22 Tube Material is covered by specification ASTM A213. This low alloyed T22 Tube Composition also contains additions of elements such as chromium, molybdenum and sometimes vanadium in order to improve its mechanical properties such as hardness and good resistance to creep. This alloy belongs to the ferritic steel category can be used in applications involving oil patch wellhead. Usually, this steel SA213 T22 Tube is available in a hardened, quenched as well as a tempered condition. Since the ASTM A213 Gr T22 has very good weldability, these tubes can be readily welded to either itself or it could be weld inlayed.

ASME SA213 T22 Alloy Steel Seamless Tube

Another benefit of using the ASTM A213 T22 Tube is that this particular alloy grade does require a post weld heat treatment, and hence can be used to meet sour service requirements. The good weldability of the T22 Tubing grade means that the alloy can be frequently used in those applications where welding is deemed as a primary requirement, such as for weld clad or inlaid components. Per the ASTM specification, the SA213 T22 Boiler Tube is to be first reheated, following which the tube is to be supplied after being furnished. The furnishing of SA213 T22 Tube can be done in either a full annealed condition, isothermal annealed condition or normalised quenched and tempered condition.

Spec chart of ASME SA213 T22 Tube

Standard ASME SA213 T22 ASTM A213 T22, (with IBR Test Certificate)
Specifications ASTM A213 & ASTM A209 (T1 , Ta, T1b)
BS/3059/90/PartII/620 & 622
Size 6.35 mm OD to 101.6 mm OD
Sch. & Swg. 12 Swg., 10 Swg., 14 Swg., 18 Swg., 16 Swg., 20 Swg., 3.6 mm Thk
Thickness 3-12mm
Tolerance Cold drawn pipe: +/-0.1mm
Cold rolled pipe: +/-0.05mm
Craft Cold rolled and Cold drawn
Type ERW / Welded / Fabricated / Seamless
Available in Form of Square, Round, Rectangular, Hydraulic
Length Standard
Double &
In Cut length also.
End Beveled End, Plain End, Treaded
Additional Testing NACE TM0177, H2 SERVICE, NACE MR 0175, NACE TM0284, SSC TEST, HIC TEST, IBR, etc.

Check Before You Buy

ASME SA213 T22 is the part of ASME SA213 Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, Heat-Exchanger Tubes. The tubing sizes and thicknesses are 1⁄8 in. [3.2 mm] in inside diameter to 5 in. [127 mm] in outside diameter and 0.015 to 0.500 in.

Elongation Requirements of SA213 T22 Boiler Tube

Calculated Minimum Elongation Values
Elongation in 2 in. or 50 mm, min %
Wall Thickness T5, T9, T11, T22 P91
in. mm Longitudinal Transverse Longitudinal
5/16 (0.312) 8 30 20 20
9/32 (0.281) 7.2 28 19 19
1/4 (0.250) 6.4 27 18 18
7/32 (0.219) 5.6 26 17
3/16 (0.188) 4.8 24 16
5/32 (0.156) 4 22 15
7/8 (0.125) 3.2 21 14
3/32 (0.094) 2.4 20 13
1/18 (0.062) 1.6 18 12

T22 Boiler Tube Chemical Compatibility


Mechanical Properties of ASTM A213 T22 Tube

Grade Tensile Strength, MPa Elongation, % Hardness, HB Yield Strength, MPa
T22 415 min 30 min 163 max 205 min

T22 Alloy Steel Seamless Tube Equivalent

Trade Name 



Heater Tubes

2 1/4 Chrome 



A213 / SA213

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