ASTM A999/A999M-23

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: A999/A999M − 23
Standard Specification for
1
General Requirements for Alloy and Stainless Steel Pipe
This standard is issued under the fixed designation A999/A999M; 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*
Single- or Double-Welded Austenitic Stainless Steel Pipe A813/A813M
Cold-Worked Welded Austenitic Stainless Steel Pipe A814/A814M
2
1.1 This specification covers a group of general require-
Centrifugally Cast Ferritic/Austenitic Stainless Steel Pipe A872/A872M
ments that, unless otherwise specified in an individual for Corrosive Environments
Ferritic/Austenitic (Duplex) Stainless Steel Pipe Electric A928/A928M
specification, shall apply to the ASTM product specifications
Fusion Welded with Addition of Filler Metal
noted below.
Spray-Formed Seamless Austenitic Stainless Steel Pipes A943/A943M
Spray-Formed Seamless Ferritic/Austenitic Stainless Steel A949/A949M
1.2 In the case of conflict between a requirement of a
Pipe
product specification and a requirement of this specification,
Austenitic Chromium-Nickel-Silicon Alloy Steel Seamless A954
and Welded Pipe
the product specification shall prevail. In the case of conflict
between a requirement of the product specification or a 1.3 The values stated in either SI units or inch-pound units
requirement of this specification and a more stringent require-
are to be regarded separately as standard. Within the text, the
ment of the purchase order, the purchase order shall prevail. SI units are shown in brackets. The values stated in each
system may not be exact equivalents; therefore, each system
Title of Specification ASTM Desig-
3
nation
shall be used independently of the other. Combining values
from the two systems may result in non-conformance with the
Seamless, Welded, and Heavily Cold Worked Austenitic A312/A312M
standard. The inch-pound units apply unless the “M” designa-
Stainless Steel Pipes
Seamless and Welded Steel Pipe for Low-Temperature A333/A333M
tion (SI) of the product specification is specified in the order.
Service and Other Applications with Required Notch
Toughness
NOTE 1—The dimensionless designator NPS (nominal pipe size) is used
Seamless Ferritic Alloy-Steel Pipe for High Temperature A335/A335M
in this standard for such traditional terms as “nominal diameter,” “size,”
Service
“nominal bore,” and “nominal size.”
Electric-Fusion-Welded Austenitic Chromium-Nickel Stainless A358/A358M
1.4 The following precautionary statement pertains only to
Steel Pipe for High-Temperature Service and General
Applications
the test method portion, Section 21, of this specification: This
Carbon and Ferritic Alloy Steel Forged and Bored Pipe for A369/A369M
standard does not purport to address all of the safety concerns,
High-Temperature Service
Seamless Austenitic Steel Pipe for High-Temperature A376/A376M if any, associated with its use. It is the responsibility of the user
Service
of this standard to establish appropriate safety, health, and
Welded Large Diameter Austenitic Steel Pipe for Corrosive A409/A409M
environmental practices and determine the applicability of
or High-Temperature Service
Centrifugally Cast Ferritic Alloy Steel Pipe for A426/A426M regulatory limitations prior to use.
High-Temperature Service
1.5 This international standard was developed in accor-
Centrifugally Cast Austenitic Steel Pipe for High- A451/A451M
dance with internationally recognized principles on standard-
Temperature Service
Centrifugally Cast Iron-Chromium-Nickel High-Alloy A608/A608M
ization established in the Decision on Principles for the
Tubing for Pressure Application at High
Development of International Standards, Guides and Recom-
Temperatures
mendations issued by the World Trade Organization Technical
Welded, Unannealed Austenitic Stainless Steel Tubular A778/A778M
Products
Barriers to Trade (TBT) Committee.
Seamless and Welded Ferritic/Austenitic A790/A790M
Stainless Steel Pipe
2. Referenced Documents
4
2.1 ASTM Standards:
1
A312/A312M Specification for Seamless, Welded, and
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
Heavily Cold Worked Austenitic Stainless Steel Pipes
A01.10 on Stainless and Alloy Steel Tubular Products.
A333/A333M Specification for Seamless and Welded Steel
Current edition approved Sept. 1, 2023. Published September 2023. Originally
approved in 1998. Last prev
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