ASTM A423/A423M-09(2014)
(Specification)Standard Specification for Seamless and Electric-Welded Low-Alloy Steel Tubes
Standard Specification for Seamless and Electric-Welded Low-Alloy Steel Tubes
ABSTRACT
This specification covers standards for minimum-wall-thickness, seamless, and electric-resistance welded low-alloy steel tubes to be used for pressure containing parts, that is economizers, and for other corrosion resistant applications. Steel tubes shall either be processed to hot or cold finish. All tubes shall be normalized or given such heat treatment as may be necessary to conform to the requirements of this specification. Chemical composition shall adhere to specified carbon, manganese, phosphorus, sulfur, silicon, copper, chromium, nickel, and molybdenum contents. Tension, flattening, flaring, flange, hardness, reverse flattening, and hydrostatic tests shall be performed. Tubes when inserted in the boiler shall stand expanding and bending without showing cracks or flaws. Tubes shall also conform to tensile strength, yield strength, hardness, and elongation requirements.
SCOPE
1.1 This specification2 covers minimum-wall-thickness, seamless and electric-resistance welded, low-alloy steel tubes for pressure containing parts such as economizers or other applications where corrosion resistance is important.
1.2 The tubing sizes and thicknesses usually furnished to this specification are 1/2 to 5 in. [12.7 to 127 mm] in outside diameter and 0.035 to 0.500 in. [0.9 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.
1.3 Mechanical property requirements do not apply to tubing smaller than 1/4 in. [3.2 mm] in inside diameter or 0.015 in. [0.4 mm] in thickness.
1.4 An optional supplementary requirement is provided and, when desired, shall be so stated in the order.
1.5 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.
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:A423/A423M −09 (Reapproved 2014)
Standard Specification for
Seamless and Electric-Welded Low-Alloy Steel Tubes
This standard is issued under the fixed designationA423/A423M; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope E273 Practice for Ultrasonic Testing of the Weld Zone of
Welded Pipe and Tubing
1.1 This specification covers minimum-wall-thickness,
seamless and electric-resistance welded, low-alloy steel tubes
3. Ordering Information
for pressure containing parts such as economizers or other
3.1 Orders for material under this specification shall include
applications where corrosion resistance is important.
the following, as required, to describe the desired material
1.2 The tubing sizes and thicknesses usually furnished to
adequately:
this specification are ⁄2 to 5 in. [12.7 to 127 mm] in outside
3.1.1 Quantity (feet, metres, or number of lengths),
diameter and 0.035 to 0.500 in. [0.9 to 12.7 mm] inclusive, in
3.1.2 Name of material (seamless or electric-resistance-
minimum wall thickness.Tubing having other dimensions may
welded tubes),
be furnished, provided such tubes comply with all other
3.1.3 Grade (Table 1),
requirements of this specification.
3.1.4 Manufacture (hot finished or cold finished),
1.3 Mechanical property requirements do not apply to
3.1.5 Size (outside diameter and minimum wall thickness),
tubing smaller than ⁄4 in. [3.2 mm] in inside diameter or 0.015
3.1.6 Length (specific or random),
in. [0.4 mm] in thickness.
3.1.7 Optional requirements (hydrostatic or electric test,
13.7),
1.4 Anoptionalsupplementaryrequirementisprovidedand,
3.1.8 Test report required (see Certification Section of
when desired, shall be so stated in the order.
Specification A450/A450M),
1.5 The values stated in either SI units or inch-pound units
3.1.9 Specification designation, and
are to be regarded separately as standard. Within the text, the
3.1.10 Specialrequirementsandanysupplementaryrequire-
SI units are shown in brackets. The values stated in each
ments selected.
system may not be exact equivalents; therefore, each system
shall be used independently of the other. Combining values
4. Manufacture
from the two systems may result in non-conformance with the
4.1 Tubesmadebytheseamlessprocessmaybehotfinished
standard. The inch-pound units shall apply unless the “M”
or cold finished.
designation of this specification is specified in the order.
5. Heat Treatment
2. Referenced Documents
5.1 All tubes shall be normalized or given such heat
2.1 ASTM Standards:
treatment as may be necessary to conform to the requirements
A450/A450M Specification for General Requirements for
of this specification.
Carbon and Low Alloy Steel Tubes
E213 Practice for Ultrasonic Testing of Metal Pipe and
6. Chemical Composition
Tubing
6.1 The steel shall conform to the requirements as to
chemical composition prescribed in Table 1.
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
7. Product Analysis
A01.09 on Carbon Steel Tubular Products.
7.1 An analysis of either one billet, one length of flat-rolled
Current edition approved March 1, 2014. Published March 2014. Originally
approved in 1958. Last previous edition approved in 2009 as A423/A423M – 09.
stock or one tube shall be made from each heat. The chemical
DOI: 10.1520/A0423_A0423M-09R14.
compositionthusdeterminedshallconformtotherequirements
For ASME Boiler and Pressure Vessel Code applications see related Specifi-
specified.
cation SA-423 in Section II of that Code.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
7.2 If the original test for product analysis fails, retests of
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
two additional billets, lengths of flat-rolled stock, or tubes shall
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. be made. Both retests, for the elements in question shall meet
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A423/A423M−09 (2014)
TABLE 1 Chemical Requirements TABLE 3 Tensile Requirements
Composition, % Grades 1 and Grade 3
Grade 1 Grade 2 Grade 3
Tensile strength, min, ksi [MPa] 60 [415] 55 [380]
Yield strength, min, ksi [MPa] 37 [255] 33 [230]
Carbon, max 0.15 0.15 0.06
Elongation in 2 in. or 50 mm, 25 35
Manganese 0.55 max 0.50–1.00 0.70–1.40
min, %
A A
Phosphorus 0.06–0.16 0.04 max 0.020 max
For longitudinal strip tests a 1.25 1.25
Sulfur, max 0.060 0.05 0.020
⁄32 in.
deduction for each
Silicon 0.10 min . 0.55 max
[0.8 mm] decrease in wall
Copper 0.20–0.60 0.30–1.00 0.25–0.45
thickness below ⁄16 in. [8 mm]
Chromium 0.24–1.31 . .
from the basic minimum
Nickel 0.20–0.70 0.40–1.10 0.50 max
elongation of the following
Molybdenum . 0.10 min 0.20 max
percentage points shall be
Antimony . . 0.05–0.15
made
A
Calculated elongation requirements shall be rounded to the nearest whole
number.
the requirements of the specification; otherwise all remaining
material in the heat or lot (Note 1) shall be rejected or, at the
option of the producer, each billet, length of flat-rolled stock or
tube may be individually tested for acceptance. Billets, lengths
11. Mechanical Tests Required
offlat-rolledstockortubeswhichdonotmeettherequirements
of the specification shall be rejected.
11.1 Tension Test—One tension test shall be made on a
specimen for lots of not more than 50 tubes.Tension tests shall
NOTE 1—For flattening, flaring, and flange requirements, the term lot
be made on specimens from two tubes for lots of more than 50
applies to all tubes prior to cutting of the same nominal size and wall
thickness that are produced from the same heat of steel. When fin
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