ASTM A423/A423M-95(2004)

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 specification  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 inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated 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.

General Information

• Status: Historical
• Publication Date: 31-Aug-2004
• ICS: 23.040.10 - Iron and steel pipes
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.09 - Carbon Steel Tubular Products

Relations

• Replaces: ASTM A423/A423M-95(2000) - Standard Specification for Seamless and Electric-Welded Low-Alloy Steel Tubes
• Effective Date: 01-Sep-2004
• Replaced By: ASTM A423/A423M-09 - Standard Specification for Seamless and Electric-Welded Low-Alloy Steel Tubes
• Effective Date: 01-Nov-2009
• Referred By: ASTM A450/A450M-21 - Standard Specification for General Requirements for Carbon and Low Alloy Steel Tubes
• Effective Date: 01-Sep-2004

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information.
Designation: A423/A423M – 95 (Reapproved 2004)
Standard Specification for
1
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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope E273 Practice for Ultrasonic Examination of theWeld Zone
2 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:
1
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),
1
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,
1.4 Anoptionalsupplementaryrequirementisprovidedand,
13.7),
when desired, shall be so stated in the order.
3.1.8 Test report required (see Certification Section of
1.5 The values stated in either inch-pound units or SI units
Specification A450/A450M),
are to be regarded separately as standard. Within the text, the
3.1.9 Specification designation, and
SI units are shown in brackets. The values stated in each
3.1.10 Specialrequirementsandanysupplementaryrequire-
system are not exact equivalents; therefore, each system must
ments selected.
be used independently of the other. Combining values from the
two systems may result in nonconformance with the specifi-
4. Manufacture
cation. The inch-pound units shall apply unless the “M”
4.1 Tubesmadebytheseamlessprocessmaybehotfinished
designation of this specification is specified in the order.
or cold finished.
2. Referenced Documents
5. Heat Treatment
3
2.1 ASTM Standards:
5.1 All tubes shall be normalized or given such heat
A450/A450M Specification for General Requirements for
treatment as may be necessary to conform to the requirements
Carbon and Low Alloy Steel Tubes
of this specification.
E213 Practice for Ultrasonic Testing of Metal Pipe and
Tubing
6. Chemical Composition
6.1 The steel shall conform to the requirements as to
chemical composition prescribed in Table 1.
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. ProductAnalysis
A01.09 on Carbon Steel Tubular Products.
Current edition approved Sept. 1, 2004. Published October 2004. Originally
7.1 An analysis of either one billet, one length of flat-rolled
approved in 1958. Last previous edition approved in 2000 as A423/A423M – 95
stock or one tube shall be made from each heat. The chemical
(2000). DOI: 10.1520/A0423_A0423M-95R04.
2
compositionthusdeterminedshallconformtotherequirements
For ASME Boiler and Pressure Vessel Code applications see related Specifi-
cation SA-423 in Section II of that Code.
specified.
3
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 [e-mail]. 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
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
A423/A423M – 95 (2004)
TABLE 1 Chemical Requirements TABLE 3 Tensile Requirements
Tensile strength, min, ksi [MPa], 60 [415]
Composition, %
Yield strength, min, or 50 mm, 37 [255]
ksi [MPa]
Grade 1 Grade 2
Elongation in 2 in. or 50 mm, min, % 25
A
Carbon, max 0.15 0.15
For longitudinal s
...