ASTM A376/A376M-14
(Specification)Standard Specification for Seamless Austenitic Steel Pipe for High-Temperature Service
Standard Specification for Seamless Austenitic Steel Pipe for High-Temperature Service
ABSTRACT
This specification covers seamless austenitic steel pipe intended for high-temperature central-station service. The grades covered are five H grades and two nitrogen grades. Pipe may be either hot finished or cold finished, with a suitable finishing treatment. All pipes shall be furnished in the heat-treated condition unless the order specifically states that no final heat treatment shall be applied. Tensile tests, hydrostatic test, nondestructive electric tests, ultrasonic tests, eddy-current tests, tension tests, and flattening tests shall be made to conform to the requirements specified.
SCOPE
1.1 This specification2 covers seamless austenitic steel pipe intended for high-temperature service. Among the grades covered are H grades and nitrogen grades that are specifically intended for high-temperature service.
Note 1: This specification was originally developed for use for piping in the central stations of electric-power generating thermal plants. However, its use is not restricted to such applications and it may be used in other applications for which the attributes of the materials, as defined by this specification, are appropriate.
1.2 Optional supplementary requirements (S1 through S10) are provided. These supplementary requirements specify additional tests that will be made only when stated in the order, together with the number of such tests required.
1.3 Grades TP321 and TP321H have lower strength requirements for nominal wall thicknesses greater than 3/8 in. [9.5 mm].
1.4 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 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.
Note 2: The dimensionless designators NPS (nominal pipe size) and DN (Diametre Nominel) have been substituted in this standard for such traditional terms as “nominal diameter,” “size,” and “nominal size.”
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Designation:A376/A376M −14 Used in USDOE-NE standards
Standard Specification for
Seamless Austenitic Steel Pipe for High-Temperature
1
Service
This standard is issued under the fixed designationA376/A376M; 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* A262 Practices for Detecting Susceptibility to Intergranular
2 Attack in Austenitic Stainless Steels
1.1 This specification covers seamless austenitic steel pipe
A999/A999M Specification for General Requirements for
intended for high-temperature service. Among the grades
Alloy and Stainless Steel Pipe
covered are H grades and nitrogen grades that are specifically
E112 Test Methods for Determining Average Grain Size
intended for high-temperature service.
E213 Practice for Ultrasonic Testing of Metal Pipe and
NOTE 1—This specification was originally developed for use for piping
Tubing
in the central stations of electric-power generating thermal plants.
However, its use is not restricted to such applications and it may be used
E381 Method of Macroetch Testing Steel Bars, Billets,
inotherapplicationsforwhichtheattributesofthematerials,asdefinedby
Blooms, and Forgings
this specification, are appropriate.
E426 PracticeforElectromagnetic(Eddy-Current)Examina-
1.2 Optional supplementary requirements (S1 through S10)
tion of Seamless and Welded Tubular Products, Titanium,
are provided. These supplementary requirements specify addi-
Austenitic Stainless Steel and Similar Alloys
tional tests that will be made only when stated in the order,
2.2 Other Standards:
together with the number of such tests required.
SNT-TC-1A Personnel Qualification and Certification in
4
1.3 GradesTP321 andTP321H have lower strength require- Nondestructive Testing
3
ments for nominal wall thicknesses greater than ⁄8 in. [9.5
3. Ordering Information
mm].
3.1 Orders for material to this specification should include
1.4 The values stated in either inch-pound units or SI units
the following, as required to describe the desired material
are to be regarded separately as standard. Within the text, the
adequately:
SI units are shown in brackets. The values stated in each
3.1.1 Quantity (feet, centimetres, or number of lengths),
system may not be exact equivalents; therefore, each system
3.1.2 Name of material (seamless austenitic steel pipe),
shall be used independently of the other. Combining values
3.1.3 Grade (Table 1),
from the two systems may result in non-conformance with the
3.1.4 Size (nominal size, or outside diameter and schedule
standard. The inch-pound units shall apply unless the “M”
number or average wall thickness),
designation of this specification is specified in the order.
3.1.5 Lengths (specific or random), (Permissible Variations
NOTE 2—The dimensionless designators NPS (nominal pipe size) and
in Length Section of Specification A999/A999M),
DN (Diametre Nominel) have been substituted in this standard for such
3.1.6 End finish (Ends Section of Specification A999/
traditional terms as “nominal diameter,” “size,” and “nominal size.”
A999M),
2. Referenced Documents 3.1.7 Optional requirements (Section 8) (see Hydrostatic
3
Test Requirements Section and the Permissible Variation in
2.1 ASTM Standards:
Weight for Seamless Pipe Section for weighing individual
lengths, of Specification A999/A999M), (see 9.6, repairing by
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel, welding; 13.3, die stamping),
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
3.1.8 Test report required (Certification Section of Specifi-
A01.10 on Stainless and Alloy Steel Tubular Products.
cation A999/A999M),
Current edition approved Oct. 1, 2014. Published November 2014. Originally
3.1.9 Specification designation, and
approved in 1954. Last previous edition approved in 2013 as A376/A376M–13.
DOI: 10.1520/A0376_A0376M-14.
3.1.10 Special requirements or any supplementary require-
2
For ASME Boiler and Pressure Vessel Code applications see related Specifi-
ments selected, or both.
cation SA-376 in Section II of that Code.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
4
Standards volume information, refer to the standard’s Document Summary page on AvailablefromAmericanSocietyforNondestructiveTesting(ASNT),P.O.Box
the ASTM website. 28518, 1711 Arlingate Ln., Columbus, OH 43228-0518.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United State
...
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: A376/A376M − 13 A376/A376M − 14 Used in USDOE-NE standards
Standard Specification for
Seamless Austenitic Steel Pipe for High-Temperature
1
Service
This standard is issued under the fixed designation A376/A376M; 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 seamless austenitic steel pipe intended for high-temperature service. Among the grades covered
are H grades and nitrogen grades that are specifically intended for high-temperature service.
NOTE 1—This specification was originally developed for use for piping in the central stations of electric-power generating thermal plants. However,
its use is not restricted to such applications and it may be used in other applications for which the attributes of the materials, as defined by this
specification, are appropriate.
1.2 Optional supplementary requirements (S1 through S10) are provided. These supplementary requirements specify additional
tests that will be made only when stated in the order, together with the number of such tests required.
3
1.3 Grades TP321 and TP321H have lower strength requirements for nominal wall thicknesses greater than ⁄8 in. [9.5 mm].
1.4 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 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.
NOTE 2—The dimensionless designators NPS (nominal pipe size) and DN (Diametre Nominel) have been substituted in this standard for such
traditional terms as “nominal diameter,” “size,” and “nominal size.”
2. Referenced Documents
3
2.1 ASTM Standards:
A262 Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels
A999/A999M Specification for General Requirements for Alloy and Stainless Steel Pipe
E112 Test Methods for Determining Average Grain Size
E213 Practice for Ultrasonic Testing of Metal Pipe and Tubing
E381 Method of Macroetch Testing Steel Bars, Billets, Blooms, and Forgings
E426 Practice for Electromagnetic (Eddy-Current) Examination of Seamless and Welded Tubular Products, Titanium, Austenitic
Stainless Steel and Similar Alloys
2.2 Other Standards:
4
SNT-TC-1A Personnel Qualification and Certification in Nondestructive Testing
3. Ordering Information
3.1 Orders for material to this specification should include the following, as required to describe the desired material adequately:
3.1.1 Quantity (feet, centimetres, or number of lengths),
3.1.2 Name of material (seamless austenitic steel pipe),
3.1.3 Grade (Table 1),
3.1.4 Size (nominal size, or outside diameter and schedule number or average wall thickness),
3.1.5 Lengths (specific or random), (Permissible Variations in Length Section of Specification A999/A999M),
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 A01.10
on Stainless and Alloy Steel Tubular Products.
Current edition approved April 1, 2013Oct. 1, 2014. Published May 2013November 2014. Originally approved in 1954. Last previous edition approved in 20122013 as
A376/A376M–12.–13. DOI: 10.1520/A0376_A0376M-13.10.1520/A0376_A0376M-14.
2
For ASME Boiler and Pressure Vessel Code applications see related Specification SA-376 in Section II of that Code.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
4
Available from American Society for Nondestructive Testing (ASNT), P.O. Box 28518, 1711 Arlingate Ln., Columbus, OH 43228-0518.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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A376/A376M − 14
TABLE 1 Chemical Requirements
A
UNS Composition,%
Desig-
Grade
Carbon Man-
...
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