ASTM F876-24
(Specification)Standard Specification for Crosslinked Polyethylene (PEX) Tubing
Standard Specification for Crosslinked Polyethylene (PEX) Tubing
ABSTRACT
This specification covers crosslinked polyethylene (PEX) tubing that is outside diameter controlled, made in standard thermoplastic tubing dimension ratios, and pressure rated for water at three temperatures. This specification covers one PEX tubing material in one standard dimension ratio and having pressure ratings for water of three temperatures. The pressure ratings decrease as the temperature is increased. PEX tubing shall be made from polyethylene compounds which have been crosslinked by peroxides, Azo compounds, or silane compounds in extrusion, or by electron beam after extrusion, or by other means such that the tubing meets the performance requirements. The following tests shall be performed: dimensions and tolerances; density; sustained pressure test; burst pressure; environmental stress cracking test; degree of crosslinking; stabilizer functionality; and oxidative stability in potable chlorinated water applications.
SCOPE
1.1 This specification covers crosslinked polyethylene (PEX) tubing that incorporates an optional polymeric inner, middle or outer layer and that is outside diameter controlled, made in nominal SDR9 tubing dimension ratios except where noted, and pressure rated for water at three temperatures (see Appendix X1). Included are requirements and test methods for material, workmanship, dimensions, burst pressure, hydrostatic sustained pressure, excessive temperature and pressure, environmental stress cracking, stabilizer functionality, bent-tube hydrostatic pressure, oxidative stability in potable chlorinated water, UV resistance, and degree of crosslinking. Requirements for tubing markings are also given. The components covered by this specification are intended for use in, but not limited to, residential and commercial, hot- and cold-potable water distribution systems, reclaimed water, fire protection, municipal water service lines, building supply lines, radiant heating and cooling systems, hydronic distribution systems, snow and ice melting systems, geothermal ground loops, district heating, turf conditioning, compressed air distribution and building services pipe, provided that the PEX tubing covered herein complies with applicable code requirements.
1.2 The text of this specification references notes, footnotes, and appendixes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the specification.
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. The values given in parentheses are mathematical conversions that may not be exact equivalents to either SI units or inch-pound units and that are provided for information only.
1.4 The following safety hazards caveat pertains only to the test methods portion, Section 7, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
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.
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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: F876 − 24 An American National Standard
Standard Specification for
1
Crosslinked Polyethylene (PEX) Tubing
This standard is issued under the fixed designation F876; 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 U.S. Department of Defense.
1. Scope* 1.4 The following safety hazards caveat pertains only to the
test methods portion, Section 7, of this specification: This
1.1 This specification covers crosslinked polyethylene
standard does not purport to address all of the safety concerns,
(PEX) tubing that incorporates an optional polymeric inner,
if any, associated with its use. It is the responsibility of the user
middle or outer layer and that is outside diameter controlled,
of this standard to establish appropriate safety, health, and
made in nominal SDR9 tubing dimension ratios except where
environmental practices and determine the applicability of
noted, and pressure rated for water at three temperatures (see
regulatory limitations prior to use.
Appendix X1). Included are requirements and test methods for
1.5 This international standard was developed in accor-
material, workmanship, dimensions, burst pressure, hydrostatic
dance with internationally recognized principles on standard-
sustained pressure, excessive temperature and pressure, envi-
ization established in the Decision on Principles for the
ronmental stress cracking, stabilizer functionality, bent-tube
Development of International Standards, Guides and Recom-
hydrostatic pressure, oxidative stability in potable chlorinated
mendations issued by the World Trade Organization Technical
water, UV resistance, and degree of crosslinking. Require-
Barriers to Trade (TBT) Committee.
ments for tubing markings are also given. The components
covered by this specification are intended for use in, but not
2. Referenced Documents
limited to, residential and commercial, hot- and cold-potable
2
2.1 ASTM Standards:
water distribution systems, reclaimed water, fire protection,
D618 Practice for Conditioning Plastics for Testing
municipal water service lines, building supply lines, radiant
D792 Test Methods for Density and Specific Gravity (Rela-
heating and cooling systems, hydronic distribution systems,
tive Density) of Plastics by Displacement
snow and ice melting systems, geothermal ground loops,
D1505 Test Method for Density of Plastics by the Density-
district heating, turf conditioning, compressed air distribution
Gradient Technique
and building services pipe, provided that the PEX tubing
D1598 Test Method for Time-to-Failure of Plastic Pipe
covered herein complies with applicable code requirements.
Under Constant Internal Pressure
1.2 The text of this specification references notes, footnotes,
D1599 Test Method for Resistance to Short-Time Hydraulic
and appendixes which provide explanatory material. These
Pressure of Plastic Pipe, Tubing, and Fittings
notes and footnotes (excluding those in tables and figures) shall
D1600 Terminology for Abbreviated Terms Relating to Plas-
3
not be considered as requirements of the specification.
tics (Withdrawn 2024)
3
1.3 The values stated in either SI units or inch-pound units D1898 Practice for Sampling of Plastics (Withdrawn 1998)
D2122 Test Method for Determining Dimensions of Ther-
are to be regarded separately as standard. The values stated in
each system are not necessarily exact equivalents; therefore, to moplastic Pipe and Fittings
D2765 Test Methods for Determination of Gel Content and
ensure conformance with the standard, each system shall be
used independently of the other, and values from the two Swell Ratio of Crosslinked Ethylene Plastics
D2837 Test Method for Obtaining Hydrostatic Design Basis
systems shall not be combined. The values given in parenthe-
for Thermoplastic Pipe Materials or Pressure Design Basis
ses are mathematical conversions that may not be exact
for Thermoplastic Pipe Products
equivalents to either SI units or inch-pound units and that are
D3895 Test Method for Oxidative-Induction Time of Poly-
provided for information only.
olefins by Differential Scanning Calorimetry
1 2
This specification is under the jurisdiction of ASTM Committee F17 on Plastic For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Piping Systems and is the direct responsibility of Subcommittee F17.26 on Olefin contact ASTM Customer Service at service@astm.org. For Annual Bo
...
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: F876 − 23a F876 − 24 An American National Standard
Standard Specification for
1
Crosslinked Polyethylene (PEX) Tubing
This standard is issued under the fixed designation F876; 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 U.S. Department of Defense.
1. Scope*
1.1 This specification covers crosslinked polyethylene (PEX) tubing that incorporates an optional polymeric inner, middle or outer
layer and that is outside diameter controlled, made in nominal SDR9 tubing dimension ratios except where noted, and pressure
rated for water at three temperatures (see Appendix X1). Included are requirements and test methods for material, workmanship,
dimensions, burst pressure, hydrostatic sustained pressure, excessive temperature and pressure, environmental stress cracking,
stabilizer functionality, bent-tube hydrostatic pressure, oxidative stability in potable chlorinated water, UV resistance, and degree
of crosslinking. Requirements for tubing markings are also given. The components covered by this specification are intended for
use in, but not limited to, residential and commercial, hot- and cold-potable water distribution systems, reclaimed water, fire
protection, municipal water service lines, building supply lines, radiant heating and cooling systems, hydronic distribution systems,
snow and ice melting systems, geothermal ground loops, district heating, turf conditioning, compressed air distribution and
building services pipe, provided that the PEX tubing covered herein complies with applicable code requirements.
1.2 The text of this specification references notes, footnotes, and appendixes which provide explanatory material. These notes and
footnotes (excluding those in tables and figures) shall not be considered as requirements of the specification.
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each
system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used
independently of the other, and values from the two systems shall not be combined. The values given in parentheses are
mathematical conversions that may not be exact equivalents to either SI units or inch-pound units and that are provided for
information only.
1.4 The following safety hazards caveat pertains only to the test methods portion, Section 7, of this specification: This standard
does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this
standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory
limitations prior to use.
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.
1
This specification is under the jurisdiction of ASTM Committee F17 on Plastic Piping Systems and is the direct responsibility of Subcommittee F17.26 on Olefin Based
Pipe.
Current edition approved Dec. 1, 2023Feb. 1, 2024. Published December 2023February 2024. Originally approved in 1984. Last previous edition approved 2023 as
F876 – 23.F876 – 23a. DOI: 10.1520/F0876-23A.10.1520/F0876-24.
*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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F876 − 24
2. Referenced Documents
2
2.1 ASTM Standards:
D618 Practice for Conditioning Plastics for Testing
D792 Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement
D1505 Test Method for Density of Plastics by the Density-Gradient Technique
D1598 Test Method for Time-to-Failure of Plastic Pipe Under Constant Internal Pressure
D1599 Test Method for Resistance to Short-Time Hydraulic Pressure of Plastic Pipe, Tubing, and Fittings
3
D1600 Terminology for Abbreviated Terms Relating to Plastics (Withdrawn 2024)
3
D1898 Practice for Sampli
...
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