ASTM D1784-20
(Specification)Standard Classification System and Basis for Specification for Rigid Poly(Vinyl Chloride) (PVC) Compounds and Chlorinated Poly(Vinyl Chloride) (CPVC) Compounds
Standard Classification System and Basis for Specification for Rigid Poly(Vinyl Chloride) (PVC) Compounds and Chlorinated Poly(Vinyl Chloride) (CPVC) Compounds
ABSTRACT
This specification covers rigid poly(vinyl chloride) (PVC) compounds and chlorinated poly(vinyl chloride) (CPVC) compounds for use in extruded or molded form like pipe and fitting applications. Classification requirements for identifying rigid PVC and CPVC shall be according to base resin, impact resistance under notch, tensile strength, modulus of elasticity in tension, deflection temperature under load, and flammability. PVC and CPVC shall be in the form of cubes, granules, free-flowing powder blends, or compacted powder blends, and shall be of uniform size and free of foreign matter. The material shall conform to the test requirements such as tensile strength and modulus of elasticity, conditioning, impact resistance, deflection temperature, and flammability.
SCOPE
1.1 This classification system standard covers rigid PVC and CPVC compounds intended for general purpose use in extruded or molded form—including fittings and both pressure and nonpressure piping applications—composed of poly(vinyl chloride), chlorinated poly(vinyl chloride), or vinyl chloride copolymers containing at least 80 % vinyl chloride, and the necessary compounding ingredients. The compounding ingredients shall be permitted to consist of lubricants, stabilizers, non-poly(vinyl chloride) resin modifiers, pigments, and inorganic fillers.
Note 1: Selection of specific compounds for particular end uses or applications requires consideration of other characteristics such as thermal properties, optical properties, weather resistance, etc. Specific requirements and test methods for these properties should be by mutual agreement between the purchaser and the seller.
Note 2: Selection of compounds for pressure piping applications requires consideration of material stress ratings that are required for determining pressure ratings, but are not addressed in this specification. Requirements for long-term material stress ratings in accordance with recognized stress rating standards, such as HDB in accordance with Test Method D2837 for pressure piping, should be included in specifications for pressure piping products or systems.
Note 3: The list of compounding ingredients in 1.1 is not meant to be an exhaustive list of allowable compound ingredients. In addition to the compounding ingredients listed, others may also be used. The list of compounding ingredients in 1.1 does not imply that every ingredient listed is a required ingredient. Some compounds may not contain all the ingredients listed in 1.1.
1.2 For applications involving special chemical resistance see Classification D5260.
1.3 The requirements in this classification system standard are intended for the quality control of compounds used to manufacture finished products. These properties are based on data obtained using standard test specimens tested under specified conditions. They are not directly applicable to finished products. See the applicable ASTM standards for requirements for finished products.
1.4 The text of this classification system standard references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of this specification.
1.5 Some rigid PVC applications have the option to contain recycled PVC plastics that meet the requirements of this classification system standard. Refer to the specific requirements in the materials and manufacture section of the applicable product standard.
1.6 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.
1.7 The following safety hazards caveat pertains only to the test methods portion, Section 11, 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 an...
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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:D1784 −20
Standard Classification System and Basis for Specification for
Rigid Poly(Vinyl Chloride) (PVC) Compounds and
1
Chlorinated Poly(Vinyl Chloride) (CPVC) Compounds
This standard is issued under the fixed designation D1784; 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* ishedproducts.SeetheapplicableASTMstandardsforrequire-
ments for finished products.
1.1 This classification system standard covers rigid PVC
and CPVC compounds intended for general purpose use in 1.4 The text of this classification system standard references
extruded or molded form—including fittings and both pressure notes and footnotes that provide explanatory material. These
and nonpressure piping applications—composed of poly(vinyl notesandfootnotes(excludingthoseintablesandfigures)shall
chloride), chlorinated poly(vinyl chloride), or vinyl chloride not be considered as requirements of this specification.
copolymers containing at least 80 % vinyl chloride, and the
1.5 Some rigid PVC applications have the option to contain
necessary compounding ingredients. The compounding ingre-
recycled PVC plastics that meet the requirements of this
dients shall be permitted to consist of lubricants, stabilizers,
classification system standard. Refer to the specific require-
non-poly(vinyl chloride) resin modifiers, pigments, and inor-
ments in the materials and manufacture section of the appli-
ganic fillers.
cable product standard.
NOTE 1—Selection of specific compounds for particular end uses or
1.6 The values stated in SI units are to be regarded as
applicationsrequiresconsiderationofothercharacteristicssuchasthermal
standard. The values given in parentheses are for information
properties, optical properties, weather resistance, etc. Specific require-
only.
ments and test methods for these properties should be by mutual
agreement between the purchaser and the seller.
1.7 The following safety hazards caveat pertains only to the
NOTE 2—Selection of compounds for pressure piping applications
test methods portion, Section 11, of this specification: This
requires consideration of material stress ratings that are required for
standard does not purport to address all of the safety concerns,
determining pressure ratings, but are not addressed in this specification.
if any, associated with its use. It is the responsibility of the user
Requirements for long-term material stress ratings in accordance with
recognized stress rating standards, such as HDB in accordance with Test
of this standard to establish appropriate safety, health, and
Method D2837 for pressure piping, should be included in specifications
environmental practices and determine the applicability of
for pressure piping products or systems.
regulatory limitations prior to use.
NOTE 3—The list of compounding ingredients in 1.1 is not meant to be
an exhaustive list of allowable compound ingredients. In addition to the
NOTE 4—This specification is similar in content (but not technically
compounding ingredients listed, others may also be used. The list of
equivalent) to ISO 1163-1:1985 and ISO 1163-2:1980.
compoundingingredientsin1.1doesnotimplythateveryingredientlisted
1.8 This international standard was developed in accor-
is a required ingredient. Some compounds may not contain all the
dance with internationally recognized principles on standard-
ingredients listed in 1.1.
ization established in the Decision on Principles for the
1.2 For applications involving special chemical resistance
Development of International Standards, Guides and Recom-
see Classification D5260.
mendations issued by the World Trade Organization Technical
1.3 The requirements in this classification system standard
Barriers to Trade (TBT) Committee.
are intended for the quality control of compounds used to
manufacture finished products. These properties are based on 2. Referenced Documents
data obtained using standard test specimens tested under 2
2.1 ASTM Standards:
specified conditions. They are not directly applicable to fin-
D256 Test Methods for Determining the Izod Pendulum
Impact Resistance of Plastics
D618 Practice for Conditioning Plastics for Testing
1
This classification system standard is under the jurisdiction ofASTM Commit-
tee D20 on Plastics and is the direct responsibility of Subcommittee D20.15 on
2
Thermoplastic Materials. For referenced ASTM standard
...
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: D1784 − 11 D1784 − 20
Standard Classification System and Basis for Specification for
Rigid Poly(Vinyl Chloride) (PVC) Compounds and
1
Chlorinated Poly(Vinyl Chloride) (CPVC) Compounds
This standard is issued under the fixed designation D1784; 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 rigid PVC and CPVC compounds intended for general purpose use in extruded or molded
form—including pressure piping applications and nonpressure piping applications—composed of poly(vinyl chloride), chlorinated
poly(vinyl chloride), or vinyl chloride copolymers containing at least 80 % vinyl chloride, and the necessary compounding
ingredients. The compounding ingredients shall be permitted to consist of lubricants, stabilizers, non-poly(vinyl chloride) resin
modifiers, pigments, and inorganic fillers.
NOTE 1—Selection of specific compounds for particular end uses or applications requires consideration of other characteristics such as thermal
properties, optical properties, weather resistance, etc. Specific requirements and test methods for these properties should be by mutual agreement between
the purchaser and the seller.
NOTE 2—Selection of compounds for pressure piping applications requires consideration of material stress ratings that are required for determining
pressure ratings, but are not addressed in this specification. Requirements for long-term material stress ratings in accordance with recognized stress rating
standards, such as HDB in accordance with Test Method D2837 for pressure piping, should be included in specifications for pressure piping products or
systems.
NOTE 3—The list of compounding ingredients in 1.1 is not meant to be an exhaustive list of allowable compound ingredients. In addition to the
compounding ingredients listed, others may also be used. The list of compounding ingredients in 1.1 does not imply that every ingredient listed is a
required ingredient. Some compounds may not contain all the ingredients listed in 1.1.
1.2 For applications involving special chemical resistance see Classification D5260.
1.3 The requirements in this specification are intended for the quality control of compounds used to manufacture finished
products. These properties are based on data obtained using standard test specimens tested under specified conditions. They are
not directly applicable to finished products. See the applicable ASTM standards for requirements for finished products.
1.4 The text of this specification references notes and footnotes that provide explanatory material. These notes and footnotes
(excluding those in tables and figures) shall not be considered as requirements of this specification.
1.5 Rigid PVC recycle plastics meeting the requirements of this specification may be used in some applications. Refer to the
specific requirements in the materials and manufacture section of the applicable product standard.
1.6 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.
1.7 The following safety hazards caveat pertains only to the test methods portion, Section 11, 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 and health practices and determine the applicability of regulatory limitations prior to use.
NOTE 4—This specification is similar in content (but not technically equivalent) to ISO 1163-1:1985 and ISO 1163-2:1980.
2. Referenced Documents
2
2.1 ASTM Standards:
D256 Test Methods for Determining the Izod Pendulum Impact Resistance of Plastics
D618 Practice for Conditioning Plastics for Testing
1
This specification classification system standard is under the jurisdiction of ASTM Committee D20 on Plastics and is the direct responsibility of Subcommittee D20.15
on Thermoplastic Materials.
Current edition approved May 1, 2011Jan. 15, 2020. Published May 2011February 2020. Originally approved in 1960. Last previous edition approved in 20082011 as
D1784 – 08.D1784 – 11. DOI: 10.1520/D1784-11.10.1520/D1784-20.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org,
...
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