ASTM A213

ASTM A213/A213M – Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Super heater, and Heat-Exchanger Tubes, this standard is the most used for seamless stainless steel tube, helps users and manufactures to specify tube detaills, main information contain grade, size, finishes, test and so on.

Seeing specific details, download ASTM A213 specification in PDF, equivalent standard is ASME SA213.

Material Grades

ASTM A213 Specification covers material containing alloy steels, Ferritic and Austenitic steels, common alloys have T9, T11, T12, T22.

Austenitic stainless steel is the most used group due to their properties, common designated grades are listed, in table 1 for chemical composition, table 2 for mechanical properties and solution temperature.

Table 1, chemical composition %

Grade C Si Mn Cr Ni Mo S P
TP304 0,08 1,0 2 18 – 20 8 – 11 0,03 0,045
TP304L 0,035 1,0 2 18 – 20 8 – 12 0,03 0,045
TP316 0,08 1,0 2 16 – 18 11 – 14 2 – 3 0,03 0,045
TP316L 0,035 1,0 2 16 – 18 10 – 14 2 – 3 0,03 0,045
TP321 0,08 1,0 2 17 – 19 9 – 12 0,03 0,045

Table 2, mechanical properties and solution temperature (Min, degree centigrade).

Grade Tensile strength(Mpa) Yield point(Mpa) Elongation(%) Hardness(HRB) Solution temperature
TP304 515 205 35 90 1040
TP304L 485 170 35 90 1040
TP316 515 205 35 90 1040
TP316L 485 170 35 90 1040
TP321 515 205 35 90 1040

Tube Sizes and Dimensions

The tubing sizes and thicknesses usually furnished to this specification are 1/8 inch [3.2 mm] in inside diameter to 5 inch [127 mm] in outside diameter and 0.015 to 0.500 in. [0.4 to 12.7 mm].

Custom OD sizes have 19.05, 22, 25, 28, 38.1, 57, 60.3, 76.2, 88.9 mm.

W.T. sizes have 1.24, 1.65, 2.5, 2.77, 3.02 mm。

Minimum wall thickness is stated in the ASTM A213, if specified, average wall thickness is available.

Table 3, outside diameter, wall thickless and length tolerances

 OD, mm W.T, mm L, mm
≤25.4 ±0.10 +20%, 0%
OD>50, T>5.6, AVG wall +/-10%
OD<50.8,+3mm OD>=50.8, +5mm
25.4~38.1 ±0.15
38.1~50.8 ±0.2
50.8~63.5 ±0.25
63.5~76.2 ±0.3
76.2~101.6 ±0.38

Seamless tubing furnished to this specification shall conform to the requirements of Specification A1016/A1016M, including any supplementary requirements.

ASTM A213 testing requirement

  • Tensile property, Elogation
  • Hardness testing, Brinell, Rockwell, Vickers hardness
  • Flattening testing
  • Flaring testing
  • Hydrostatic or Nondestructive test
  • Intergranular Corrosion Test – ASTM A262/E (option)

ASTM A213 seamless tube manufacturer

We are professional ASTM A213 seamless tube manufacture & supplier, having capability to produce wide range size seamless tube for heat exchanger system, manufacturing process starts from extrusion of billet, by cold rolling and cold drawn methods to control size and tolerance, heat treatment will be finished after cold working to achieve original steel properties, which improve high temperature resistance and corrosion resistance, then tubes should be under pickling passivation condition.

Straight length tubes, coiled tubing and U bending tubes can be offered for critical applications, seamless tubing conform to ASTM A213, also conform to ASTM A213/A269 dual certified standard for superior quality tubes.

ASTM A213 seamless tubes