ASTM A213 Alloy Tubes

ASTM A213 Alloy Tubes are been widely used in high temperature services especially for the boiler and superheater.

PMI test for ASTM A213 T91 tubes

ASTM A213 Alloy Tubes material could be in alloy steel and stainless steel, and manufactured in seamless of hot rolled or cold drawn. So this pipe usually used in very important places and the price is much higher than normal carbon pipes.

Sunny Steel Supply stocks a full range of the following ASTM A213 grades:

Main grades:ASTM A213 T5, T5b, T9, T11, T91 and T22

Size range:

  • NPS 1/4'' to NPS 24''
  • Wall Thickness - Schedules 40 through 160, STD, XS, XXS.
  • Unscheduled heavy wall pipe thicknesses available up to 4 inches.

SA 213 standard specification for seamless ferritic and austenitic alloy-steel boiler,super heater,and heat-exchanger tubes.

1. Surface state:
Austenitic steel pipe should be washed to remove the scale, when the use of bright annealing, you do not need pickling.

2. Chemical analysis of finished products:
It shall be analyzed from one billet or one pipe per furnace, and the chemical composition determined accordingly shall meet the specified requirements.

3. Mechanical test and grain size:
(1) Tensile test:Such as each batch of steel pipe ≤ 50 root, then take a sample for tensile test; each batch of steel pipe> 50, then two steel pipes should take two samples for tensile test.
(2) Flattening test: in each batch of a finished tube at both ends of each sample to take a flattening test, but the root can not used as a flaring sample.
(3) Flaring test: in each batch of a finished tube at both ends of a sample for a flaring test, but the root canal can not be used as a flattening sample.
(4) Hardness test: from each batch of two tubes on the sample to do Brinell or Rockwell hardness test.
(6) Grain size: according to ASME E112 standard test.

ASTM A213 Standard Scope:

ASTM A213 Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, Heat-Exchanger Tubes.

Seamless ferrite alloy and austenitized alloy tubes
Seamless ferrite alloy and austenitized alloy tubes

1.1 This specification covers seamless ferritic and austenitic steel boiler, superheater, and heat-exchanger tubes, designated Grades T91, TP304, etc. These steels are listed in Tables 1 and 2.

1.2 Grades containing the letter, H, in their designation, have requirements different from those of similar grades not containing the letter, H. These different requirements provide higher creep-rupture strength than normally achievable in similar grades without these different requirements.

1.3 The 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.

1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. The inch-pound units shall apply unless the “M” designation of this specification is specified in the order.

Chemical composition(%) for ASTM A213
Grade UNS Designation C Mn P S Si
T2 K11547 0.10–0.20 0.30–0.61 0.025 0.025B 0.10–0.30
T5 K41545 0.15 0.30–0.60 0.025 0.025 0.5
T5b K51545 0.15 0.30–0.60 0.025 0.025 1.00–2.00
T5c K41245 0.12 0.30–0.60 0.025 0.025 0.5
T9 K90941 0.15 0.30–0.60 0.025 0.025 0.25–1.00
T11 K11597 0.05–0.15 0.30–0.60 0.025 0.025 0.50–1.00
T12 K11562 0.05–0.15 0.30–0.61 0.025 0.025B 0.5