213 / SA 213
Specification for Seamless Ferritic and Austenitic
Alloy-Steel Boiler, Superheater, and Heat-Exchanger
1.1 This specification covers minimum-wall-thickness,
seamless ferritic and austenitic steel, boiler and
superheater tubes and austenitic steel heat-exchanger
tubes, designated Grades T5, TP304, etc. These steels
are listed in the specification (Tables 1-3).
1.2 Grades TP304H, TP309H, TP309HCb,
TP310H, TP310HCb, TP310HCbN, TP316H, TP321H, TP347H,
TP347HFG (fine grained) and TP348H are modifications
of Grades TP304, TP309S, TP309Cb, TP310S, TP310Cb,
TP316, TP321, TP347, and TP348, and are intended
for high-temperature service, such as for superheaters
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.
Tubing having other dimensions may be furnished,
provided such tubes comply with all other requirements
of this specification.
1.4 Mechanical property requirements
do not apply to tubing smaller than 1/8 in. [3.2
mm] in inside diameter or 0.015 in. [0.4 mm] in
1.5 Optional supplementary requirements
are provided and, when desired, shall be so stated
in the order.
1.6 The values stated in either
inch-pound units or SI units are to be regarded
separately as standard. (A combination of values
from the two systems may result in nonconformance
with the specification.) The inch-pound units shall
apply unless the "M" designation of this
specification is specified in the order.