ASTM A250/A250M-05(2009)
(Specification)Standard Specification for Electric-Resistance-Welded Ferritic Alloy-Steel Boiler and Superheater Tubes
Standard Specification for Electric-Resistance-Welded Ferritic Alloy-Steel Boiler and Superheater Tubes
ABSTRACT
This guide covers standard specification for several grades, designated T1, T1a, T1b, T2, T11, T12, and T22, of minimum-wall-thickness, electric-resistance-welded, carbon-molybdenum and chromium-molybdenum alloy-steel, boiler and superheater tubes. Product analysis shall be done wherein the material shall conform to the required chemical composition for carbon, manganese, phosphorus, sulfur, silicon, molybdenum, and chromium. The material shall conform to the required tensile properties, namely: tensile strength, yield strength, and elongation. The computed minimum elongation values for steel with decreasing wall thickness shall be given. The tubes shall have a hardness not exceeding the specified values for Brinell hardness and Rockwell hardness numbers. When the final heat treatment is in a continuous furnace, the number of tubes of the same size and from the same heat in a lot shall be determined from the given size of the tubes. Required mechanical tests such as tensile test, flattening test, flange test, reverse flattening test, hardness test, and hydrostatic or nondestructive electric tests, shall be performed on the steel specimen.
SCOPE
1.1 This specification covers several grades, designated T1, T1a, T1b, T2, T11, T12 and T22, of minimum-wall-thickness, electric-resistance-welded, carbon-molybdenum and chromium-molybdenum alloy-steel, boiler and superheater tubes.
1.2 The tubing sizes and thicknesses usually furnished to this specification are ½ to 5 in. [12.7 to 127 mm] in outside diameter and 0.035 to 0.320 in. [0.9 to 8.1 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 1/8 in. [3.2 mm] in inside diameter or 0.015 in. [0.4 mm] in thickness.
1.4 An optional supplementary requirement is provided for non-destructive examination for certain ASME applications.
1.5 The values stated in either SI units or inch-pound units are to be reaagrded separately as standard. 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.
1.5.1 Within the text, the SI units are shown in brackets.
1.5.2 The inch-pound units shall apply unless the “M” designation of this specification is specified in the order.
General Information
Relations
Buy Standard
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:A250/A250M −05(Reapproved 2009)
Standard Specification for
Electric-Resistance-Welded Ferritic Alloy-Steel Boiler and
1
Superheater Tubes
This standard is issued under the fixed designationA250/A250M; 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 A1016/A1016M Specification for General Requirements for
2 Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless
1.1 Thisspecification coversseveralgrades,designatedT1,
Steel Tubes
T1a, T1b, T2, T11, T12 and T22, of minimum-wall-thickness,
E213 Practice for Ultrasonic Testing of Metal Pipe and
electric-resistance-welded, carbon-molybdenum and
Tubing
chromium-molybdenum alloy-steel, boiler and superheater
E273 Practice for Ultrasonic Testing of the Weld Zone of
tubes.
Welded Pipe and Tubing
1.2 The tubing sizes and thicknesses usually furnished to
1
this specification are ⁄2 to 5 in. [12.7 to 127 mm] in outside
3. Ordering Information
diameter and 0.035 to 0.320 in. [0.9 to 8.1 mm], inclusive, in
3.1 Orders for material under this specification should
minimum wall thickness.Tubing having other dimensions may
include the following, as required, to describe the desired
be furnished, provided such tubes comply with all other
material adequately:
requirements of this specification.
3.1.1 Quantity (feet, metres, or number of lengths),
1.3 Mechanical property requirements do not apply to 3.1.2 Name of material (electric-resistance-welded tubes),
1
tubing smaller than ⁄8 in. [3.2 mm] in inside diameter or 0.015
3.1.3 Grade (Table 1),
in. [0.4 mm] in thickness. 3.1.4 Size (outside diameter or minimum wall thickness),
3.1.5 Length (specific or random),
1.4 An optional supplementary requirement is provided for
3.1.6 Optional requirement (7.3.6),
non-destructive examination for certain ASME applications.
3.1.7 Test report required (see Certification Section of
1.5 The values stated in either SI units or inch-pound units
Specification A1016/A1016M),
are to be reaagrded separately as standard. The values stated in
3.1.8 Specification designation, and
each system may not be exact equivalents; therefore, each
3.1.9 Special requirements and any supplementary require-
system shall be used independently of the other. Combining
ments selected.
values from the two systems may result in non-conformance
with the standard.
4. General Requirements
1.5.1 Within the text, the SI units are shown in brackets.
4.1 Product furnished under this specification shall conform
1.5.2 The inch-pound units shall apply unless the “M”
to the applicable requirements of Specification A1016/
designation of this specification is specified in the order.
A1016M, including any supplementary requirements that are
indicated in the purchase order. Failure to comply with the
2. Referenced Documents
general requirements of Specification A1016/A1016M consti-
3
2.1 ASTM Standards:
tutes nonconformance with this specification. In case of con-
flicts with the requirements of this specification and Specifi-
cation A1016/A1016M, this specification shall prevail.
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
5. Materials and Manufacture
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
A01.10 on Stainless and Alloy Steel Tubular Products.
5.1 The steel shall be killed.
Current edition approved Oct. 1, 2009. Published February 2010. Originally
approved in 1941. Last previous edition approved in 2005 as A250/A250M – 05.
5.2 The tubes shall be made by electric-resistance welding.
DOI: 10.1520/A0250_A0250M-05R09.
2
5.3 Heat Treatment
For ASME Boiler and Pressure Vessel Code applications see related Specifi-
cation SA-250 in Section II of that Code.
5.3.1 After welding, or when cold finished, after the final
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
cold-drawing pass, all tubes shall be heat treated and, except as
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
provided in 5.3.2, furnished in the full annealed, isothermal
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. annealed, normalized, or normalized and tempered condition at
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
A250/A250M−05 (2009)
TABLE 1 Chemical Requirements
Element Composition, %
Grade Grade Grade Grade Grade Grade Grade
T1 T1a T1b T2 T11 T12 T22
Carbon 0.10–0.20 0.15–0.25 0.14 max 0.10–0.20 0.05–0.15 0.05–0.15 0.15 max
Manganese 0.30–0.80 0.30–0.80
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:A250/A250M–05 Designation: A250/A250M – 05 (Reapproved 2009)
Standard Specification for
Electric-Resistance-Welded Ferritic Alloy-Steel Boiler and
1
Superheater Tubes
This standard is issued under the fixed designationA250/A250M; 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 *
2
1.1 This specification covers several grades, designated T1, T1a, T1b, T2, T11, T12 and T22, of minimum-wall-thickness,
electric-resistance-welded, carbon-molybdenum and chromium-molybdenum alloy-steel, boiler and superheater tubes.
1
1.2 The tubing sizes and thicknesses usually furnished to this specification are ⁄2 to 5 in. [12.7 to 127 mm] in outside diameter
and 0.035 to 0.320 in. [0.9 to 8.1 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
1.3 Mechanical property requirements do not apply to tubing smaller than ⁄8 in. [3.2 mm] in inside diameter or 0.015 in. [0.4
mm] in thickness.
1.4 An optional supplementary requirement is provided for non-destructive examination for certain ASME applications.
1.5 The values stated in either inch-poundSI units or SIinch-pound units are to be regardedreaagrded separately as the standard.
Within the text, the SI units are shown in brackets. The values stated in each system aremay not be exact equivalents; therefore,
each system mustshall be used independently of the other. Combining values from the two systems may result in non-conformance
with the specification. Thestandard.
1.5.1 Within the text, the SI units are shown in brackets.
1.5.2 The inch-pound units shall apply unless the “M” designation of this specification is specified in the order.
2. Referenced Documents
3
2.1 ASTM Standards:
A1016/A1016M Specification for General Requirements for Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless Steel
Tubes
E213 Practice for Ultrasonic Testing of Metal Pipe and Tubing
E273 Practice for Ultrasonic Testing of the Weld Zone of Welded Pipe and Tubing
3. Ordering Information
3.1 Orders for material under this specification should include the following, as required, to describe the desired material
adequately:
3.1.1 Quantity (feet, metres, or number of lengths),
3.1.2 Name of material (electric-resistance-welded tubes),
3.1.3 Grade (Table 1),
3.1.4 Size (outside diameter or minimum wall thickness),
3.1.5 Length (specific or random),
3.1.6 Optional requirement (7.3.6),
3.1.7 Test report required (see Certification Section of Specification A1016/A1016M),
3.1.8 Specification designation, and
3.1.9 Special requirements and any supplementary requirements selected.
4. General Requirements
4.1 Product furnished under this specification shall conform to the applicable requirements of Specification A1016/A1016M,
1
This specification is under the jurisdiction ofASTM CommitteeA01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of SubcommitteeA01.10
on Stainless and Alloy Steel Tubular Products .
Current edition approved MarchOct. 1, 2005.2009. Published March 2005.February 2010. Originally approved in 1941. Last previous edition approved in 20042005 as
A250/A250M – 045. DOI: 10.1520/A0250_A0250M-05R09.
2
For ASME Boiler and Pressure Vessel Code applications see related Specification SA-250 in Section II of that Code.
3
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. ForAnnualBookofASTMStandards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
A250/A250M – 05 (2009)
TABLE 1 Chemical Requirements
Element Composition, %
Grade Grade Grade Grade Grade Grade Grade
T1 T1a T1b T2 T11 T12 T22
Carbon 0.10–0.20 0.15–0.25 0.14 max 0.10–0.20 0.05–0.15 0.05–0.15 0.15 max
Manganese 0.30–0.80 0.30–0.80 0.30–0.80 0.30–0.61 0.30–0.60 0.30–0.61 0.30–0.60
Phosphorus, max 0.025 0.025 0.025 0.025 0.025 0.030 0.025
Sulfur, max 0.025 0.025 0.025 0.020 0.020 0.020 0.020
Silicon 0.10–0.50 0.10–0.50 0.10–0.50 0.10–0.30 0.50–1.00 0.50 max 0.50 max
Molybdenum 0.44–0.65 0.44–0.65 0.44–0.65 0.44–0.65 0.44–0.65 0.
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.