ASTM A369/A369M-24

Standard Specification for Carbon and Ferritic Alloy Steel Forged and Bored Pipe for High-Temperature Service

ABSTRACT
This guide specifies standard specification for heavy-wall carbon and alloy steel pipe made from turned and bored forgings and is intended for high-temperature service. Heat and product analysis shall be conducted on several grades of ferritic steels, wherein the material shall conform to the required chemical composition for carbon, manganese, phosphorus, sulfur, silicon, chromium, and molybdenum. The steel pipe shall conform to the required tensile properties like tensile strength, yield strength, and elongation. Required mechanical tests for the steel pipe include transverse or longitudinal tension test, flattening test, and bend test.
SCOPE
1.1 This specification2 covers heavy-wall carbon and alloy steel pipe (Note 1) made from turned and bored forgings and is intended for high-temperature service. Pipe ordered under this specification shall be suitable for bending and other forming operations and for fusion welding. Selection will depend on design, service conditions, mechanical properties and high-temperature characteristics.
Note 1: The use of the word “pipe” throughout the several sections of this specification is used in the broad sense and intended to mean pipe headers, or leads.
Note 2: The dimensionless designator NPS (nominal pipe size) has been substituted in this standard for such traditional terms as “nominal diameter,” “size,” and “nominal size.”  
1.2 Several grades of ferritic steels are covered. Their compositions are given in Table 1.    
1.3 Supplementary requirements (S1 to S7) of an optional nature are provided. Supplementary requirements S1 to S5 call for additional tests to be made, and when desired shall be so stated in the order, together with the number of such tests required as applicable.  
1.4 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.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Published
• Publication Date: 29-Feb-2024
• ICS: 23.040.10 - Iron and steel pipes
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.10 - Stainless and Alloy Steel Tubular Products

Relations

• Replaces: ASTM A369/A369M-23 - Standard Specification for Carbon and Ferritic Alloy Steel Forged and Bored Pipe for High-Temperature Service
• Effective Date: 01-Mar-2024
• Referred By: ASTM A999/A999M-23 - Standard Specification for General Requirements for Alloy and Stainless Steel Pipe
• Effective Date: 01-Mar-2024

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: A369/A369M − 24
Standard Specification for
Carbon and Ferritic Alloy Steel Forged and Bored Pipe for
1
High-Temperature Service
This standard is issued under the fixed designation A369/A369M; 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* mendations issued by the World Trade Organization Technical
2 Barriers to Trade (TBT) Committee.
1.1 This specification covers heavy-wall carbon and alloy
steel pipe (Note 1) made from turned and bored forgings and is
2. Referenced Documents
intended for high-temperature service. Pipe ordered under this
3
2.1 ASTM Standards:
specification shall be suitable for bending and other forming
A999/A999M Specification for General Requirements for
operations and for fusion welding. Selection will depend on
Alloy and Stainless Steel Pipe
design, service conditions, mechanical properties and high-
E290 Test Methods for Bend Testing of Material for Ductil-
temperature characteristics.
ity
NOTE 1—The use of the word “pipe” throughout the several sections of
E381 Method of Macroetch Testing Steel Bars, Billets,
this specification is used in the broad sense and intended to mean pipe
Blooms, and Forgings
headers, or leads.
4
NOTE 2—The dimensionless designator NPS (nominal pipe size) has
2.2 ASME Boiler and Pressure Vessel Code:
been substituted in this standard for such traditional terms as “nominal
Section IX
diameter,” “size,” and “nominal size.”
4
2.3 ASME Standard:
1.2 Several grades of ferritic steels are covered. Their
B 46.1 Surface Texture
compositions are given in Table 1.
5
2.4 AWS Specifications:
1.3 Supplementary requirements (S1 to S7) of an optional
A5.5/A5.5M Specification for Low-Alloy Steel Electrodes
nature are provided. Supplementary requirements S1 to S5 call
for Shielded Metal Arc Welding
for additional tests to be made, and when desired shall be so
A5.23/A5.23M Specification for Low-Alloy Steel Elec-
stated in the order, together with the number of such tests
trodes and Fluxes for Submerged Arc Welding
required as applicable.
A5.28/A5.28M Specification for Low-Alloy Steel Elec-
trodes for Gas Shielded Arc Welding
1.4 The values stated in either SI units or inch-pound units
A5.29/A5.29M Low-Alloy Steel Electrodes for Flux Cored
are to be regarded separately as standard. Within the text, the
Arc Welding
SI units are shown in brackets. The values stated in each
system may not be exact equivalents; therefore, each system
3. Ordering Information
shall be used independently of the other. Combining values
from the two systems may result in non-conformance with the 3.1 Orders for material to this specification should include
standard. The inch-pound units shall apply unless the “M” the following, as required, to describe the desired material
designation of this specification is specified in the order. adequately:
3.1.1 Quantity (feet, centimetres, or number of lengths),
1.5 This international standard was developed in accor-
3.1.2 Name of material (forged and bored pipe),
dance with internationally recognized principles on standard-
3.1.3 Grade (Table 1),
ization established in the Decision on Principles for the
3.1.4 Size (inside diameter and minimum wall thickness),
Development of International Standards, Guides and Recom-
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel, contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee Standards volume information, refer to the standard’s Document Summary page on
A01.10 on Stainless and Alloy Steel Tubular Products. the ASTM website.
4
Current edition approved March 1, 2024. Published March 2024. Originally Available from American Society of Mechanical Engineers (ASME), ASME
approved in 1953. Last previous edition approved in 2023 as A369/A369M – 23. International Headquarters, Two Park Ave., New York, NY 10016-5990, http://
DOI: 10.1520/A0369_A0369M-24. www.asme.org.
2 5
For ASME Boiler and Pressure Vessel Code applications see related Specifi- Available from American Welding Society (AWS), 550 NW LeJeune Rd.,
cation SA-369 in Section II of that Code. Miami, FL 33126, http://www.aws.org.
*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. Un
...

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: A369/A369M − 23 A369/A369M − 24
Standard Specification for
Carbon and Ferritic Alloy Steel Forged and Bored Pipe for
1
High-Temperature Service
This standard is issued under the fixed designation A369/A369M; 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 heavy-wall carbon and alloy steel pipe (Note 1) made from turned and bored forgings and is
intended for high-temperature service. Pipe ordered under this specification shall be suitable for bending and other forming
operations and for fusion welding. Selection will depend on design, service conditions, mechanical properties and high-temperature
characteristics.
NOTE 1—The use of the word “pipe” throughout the several sections of this specification is used in the broad sense and intended to mean pipe headers,
or leads.
NOTE 2—The dimensionless designator NPS (nominal pipe size) has been substituted in this standard for such traditional terms as “nominal diameter,”
“size,” and “nominal size.”
1.2 Several grades of ferritic steels are covered. Their compositions are given in Table 1.
1.3 Supplementary requirements (S1 to S7) of an optional nature are provided. Supplementary requirements S1 to S5 call for
additional tests to be made, and when desired shall be so stated in the order, together with the number of such tests required as
applicable.
1.4 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.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
3
2.1 ASTM Standards:
A999/A999M Specification for General Requirements for Alloy and Stainless Steel Pipe
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 May 1, 2023March 1, 2024. Published May 2023March 2024. Originally approved in 1953. Last previous edition approved in 20182023 as
A369/A369M – 18a.A369/A369M – 23. DOI: 10.1520/A0369_A0369M-23.10.1520/A0369_A0369M-24.
2
For ASME Boiler and Pressure Vessel Code applications see related Specification SA-369 in Section II of that Code.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*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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A369/A369M − 24
TABLE 1 Chemical Requirements
Grade Composition, %
FPA FPB FP1 FP2
Carbon 0.25 max 0.30 max 0.10–0.20 0.10–0.20
Manganese 0.27–0.93 0.29–1.06 0.30–0.80 0.30–0.61
Phosphorus, max 0.035 0.035 0.025 0.025
Sulfur, max 0.035 0.035 0.025 0.025
Silicon 0.10 min 0.10 min 0.10–0.50 0.10–0.30
Chromium . . . 0.50–0.81
Molybdenum . . 0.44–0.65 0.44–0.65
Grade FP5 FP9 FP11 FP12
Carbon 0.15 max 0.15 max 0.05–0.15 0.05–0.15
Manganese 0.30–0.60 0.30–0.60 0.30–0.60 0.30–0.61
Phosphorus, max 0.025 0.030 0.025 0.025
Sulfur, max 0.025 0.030 0.025 0.025
Silicon 0.50 max 0.50–1.00 0.50–1.00 0.50 max
Chromium 4.00–6.00 8.00–10.00 1.00–1.50 0.80–1.25
Molybdenum 0.45–0.65 0.90–1.10 0.44–0.65 0.44–0.65
Grade FP21 FP22 FP91 FP92
Type 1 Type 2
Carbon 0.07–0.13
Heat 0.05–0.15 0.05–0.15 0.08–0.12 0.08–0.12
Product . . . 0.07–0.13
A
Manganese 0.30–0.60 0.30–0.60 0.30–0.60 0.30–0.50 0.30–0.60
A
Phosphorus, max 0.025 0.025 0.025 0.
...