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ASTM A556M-88/ASME SA556 Seamless cold drawn steel feedwater heater tubes 1
(ASTM A 556 ]M - 88 / ASME 556 /ASTMA556M-88/ASME556)

ASTM A556 is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
This standard2 is issued under the fixed designation A 556/A 556M; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon ( ュ) indicates an editorial change since the last revision or reapproval.
1.Scope
1.1 This specification covers minimum-wall-thickness, seamless cold-drawn carbon steel tubes including bending into the from of u-tubes, if specified, for use in tubular feedwater heaters.

1.2 The tubing sizes covered shall be 5/8 to 1 2/4-in. [15.9 to 31.8-mm] outside diameter, inclusive, with minimum wall thicknesses equal to or greater than 0.045 in. [1.1 mm].

1.3 optional supplementary requirements are provided, and hen desired, shall be stated in the order.

1.4 The values stared in either inch-pound units or SI units are to be regarded separately as the standard. within the text, the SI units are shown in brackets. The values sated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining 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.

JIS Number and Corrensponding Foreign Standards
JIS
ASTM
BS
DIN
NF
ISO

Index Number

Standard Number

Grade

Tupe

Standard Number

Grade

Tupe

Standard Number

Grade

Tupe

Standard Number

Grade

Tupe

Standard Number

Grade

Tupe

Standard Number

Grade

Tupe

G3461
STB340
C
A161
LC
C
3059
HFS320
C
A49-245
TS34e
C
C010
(STB35)
A192
-
C
"
CFS320
C
"
TS34c
C
A226
-
C
"
ERW320
C
A556
GrA2
C
"
CEW320
C
A557
GrA2
C
"
S1 360
C
"
S2 360
C
"
ERW 360
C
"
CEW360
C
3606
ERW320
C
"
CEW320
C
"
CFS320
C
STB410
C
A179
GrC
C
3059
S1 440
C
17175
St45.8
C
A49-213
TU42c
C
2604/2
TS9H
C
(STB42)
A210
GrA1
C
"
S2 440
C
17177
St42.8
C
A49-215
TU42c
C
"
TW9H
C
A556
GrB2
C
"
ERW 440
C
A49-243
TS42c
A557
GrB2
C
"
CEW 440
C
A49-245
TS42c
3602
HFS 410
C
"
TS42c
"
CFS 410
C
"
ERW 410
C
"
CEW 410
C
3606
ERW 440
C
"
CEW 440
C
"
CFS 440
C
STB510
C
C
17175
19Mn5
C
A49-213
TU52C
C
2604/2
TS18
C
(STB52)
C
A49-248
TU52C
C

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