Project Description

ASME SA213, ASTM A213 / A 213M T11, T12, T22, T2, T5, T5b, T5c, T9, T91 is the standard applicable to seamless alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes.

ASME SA213 /SA213M tubes shall be made by the seamless process and shall be either hot-finished or cold finished as specified.

ASME SA213 /SA213M covers several grades of minimum- wall-thickness, seamless, alloy-steel, boiler and superheater tubes.

ASME SA213 /SA213M tubing sizes and thicknesses usually furnished to this specification 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. [0.4 to 12.7 mm], inclusive, in minimum wall thickness or, if specified in the order, average wall thickness. Tubing having other diameters may be furnished, provided such tubes comply with all other requirements of this specification.

Standard: ASME SA213 /SA213M

Description Name: ASME SA213 / ASTM A213 T11 Seamless tubes, ASTM A213 / ASME SA213 T12 Seamless tubes, ASTM A213 / ASME SA213 T22, Seamless alloy tubes, ASTM A213 T11 Superheater tubes, ASTM A213 T12 Superheater tubes, ASTM A213 T22 Superheater tubes, ASTM A213 T11 boiler tubes, ASTM A213 T22 boiler tubes, ASTM A213 T12 boiler tubes, Seamless superheater tubes, Boiler tubes.

Size: 3.2 to 127 mm

Wall Thickness: 0.4 to 12.7mm

Shape: Round

Length: Single random length/ Double random length or as customer’s actual request

Grade: T11, T12, T22

Referenced Documents:

ASTM A 1016/A 1016M Specification for General Requirements for Ferritic Alloy Steel, Austenitic Alloy Steel, and Stain- less Steel Tubes.

Chemical Composition:

Chemical Components (%)


Heat Treatment Requirements

GradeUNS NumberHeat Treat TypeSubcritical Annealing or Tempering Temperature, Min or range °F [°C]
T11K11597full or isothermal anneal normalize and temper1200 [650]
T12K11562full or isothermal anneal normalize and temper subcritical anneal1200 to 1350[650 to 730]
T22K21590full or isothermal anneal normalize and temper1250 [675]

Tensile Requirements and Hardness

Mechanical properties
Strength (Mpa)Strength (Mpa)(%)(HRB)
  • 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
  • Hydrostatic or Nondestructive Electric Test—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.

Materials and Manufacture

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