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.
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 %
|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|
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|
OD>50, T>5.6, AVG wall +/-10%
|OD<50.8,+3mm OD>=50.8, +5mm|
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.