ASTM D2343-17

Standard Test Method for Tensile Properties of Glass Fiber Strands, Yarns, and Rovings Used in Reinforced Plastics

SIGNIFICANCE AND USE
5.1 Tensile properties determined by this test method are of value for identifying and characterizing materials for control and specification purposes as well as for providing data for research and development studies.  
5.2 This test method is intended for use in testing resin-compatible sized glass fiber materials that have been designed specifically for use with certain generic types of plastics. The use of a resin system that is compatible with the reinforcement material under test produces results that are most representative of the actual strength that is available in the material when used as intended in an end item. Premature reinforcement failures occur if the elongation of the resin system is less than that of the reinforcement being tested. It is critical to select a resin system that does not lead to premature reinforcement failure. Use of compatible resin system and complete resin impregnation is recommended to avoid invalid failures and misleading results.  
5.3 This test method is useful for testing pretreated specimens for which comparative results are desired. Gage length, gripping system, testing speed, and the resin impregnation ratio of the specimen affects the values obtained by this test method.
SCOPE
1.1 This test method covers the determination of the comparative tensile properties of glass fiber strands, yarns, and rovings in the form of impregnated rod test specimens when tested under defined conditions of pretreatment, temperature, humidity, and tension testing machine speed. This test method is applicable to continuous filament, glass fiber materials that have been coated with a resin compatible sizing. This method is intended for use in quality control and R & D, and is not intended to be used to develop composites design data.
Note 1: This method is technically equivalent to the short method described in ISO 9163.
Note 2: Prime consideration should be given to the use of a polymeric binder that produces specimens that yield the highest consistent values for the glass fiber material under test. Tensile properties vary with specimen preparation, resin impregnation system, and speed and environment of testing. Consider these factors where precise comparative results are desired.  
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.  
1.3 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.  
1.4 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: Historical
• Publication Date: 30-Nov-2017
• ICS: 59.100.10 - Textile glass materials
• Technical Committee: D20 - Plastics
• Drafting Committee: D20.18 - Reinforced Thermosetting Plastics

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D2343 − 17
Standard Test Method for
Tensile Properties of Glass Fiber Strands, Yarns, and
1
Rovings Used in Reinforced Plastics
This standard is issued under the fixed designation D2343; 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* 2. Referenced Documents
2
2.1 ASTM Standards:
1.1 This test method covers the determination of the com-
D618 Practice for Conditioning Plastics for Testing
parative tensile properties of glass fiber strands, yarns, and
D883 Terminology Relating to Plastics
rovings in the form of impregnated rod test specimens when
E4 Practices for Force Verification of Testing Machines
tested under defined conditions of pretreatment, temperature,
E6 Terminology Relating to Methods of Mechanical Testing
humidity, and tension testing machine speed. This test method
2.2 ISO Standard:
is applicable to continuous filament, glass fiber materials that
ISO 9163 Textile Glass—Rovings—Manufacture of Test
have been coated with a resin compatible sizing. This method
Specimens and Determination of Tensile Strength of
is intended for use in quality control and R & D, and is not
Impregnated Rovings
intended to be used to develop composites design data.
3. Terminology
NOTE 1—This method is technically equivalent to the short method
described in ISO 9163. 3.1 Definitions:
3.1.1 Definitions of terms and symbols relating to this test
NOTE 2—Prime consideration should be given to the use of a polymeric
binder that produces specimens that yield the highest consistent values for
method appear in Terminologies E6 and D883.
the glass fiber material under test. Tensile properties vary with specimen
preparation, resin impregnation system, and speed and environment of 4. Summary of Test Method
testing. Consider these factors where precise comparative results are
4.1 This test method consists of impregnating glass fiber
desired.
strands, yarns, or rovings with a suitable polymeric binder
1.2 The values stated in SI units are to be regarded as the
material and loading the resulting test specimens to failure in a
standard. The values given in parentheses are for information
tension testing machine having a constant-rate-of crosshead
only.
movement. The cross sectional area is determined from skeins
of glass fiber taken before and after each set of test specimens.
1.3 This standard does not purport to address all of the
After impregnation and curing, the specimens shall either be
safety concerns, if any, associated with its use. It is the
tabbed using glass fiber mat or cardboard and tested with
responsibility of the user of this standard to establish appro-
standard grips; or the ends shall be sanded with 240 grit
priate safety, health, and environmental practices and deter-
sandpaper or fine emery cloth and tested using rubber faced
mine the applicability of regulatory limitations prior to use.
grips.
1.4 This international standard was developed in accor-
dance with internationally recognized principles on standard- 5. Significance and Use
ization established in the Decision on Principles for the
5.1 Tensile properties determined by this test method are of
Development of International Standards, Guides and Recom-
value for identifying and characterizing materials for control
mendations issued by the World Trade Organization Technical
and specification purposes as well as for providing data for
Barriers to Trade (TBT) Committee.
research and development studies.
5.2 This test method is intended for use in testing resin-
compatible sized glass fiber materials that have been designed
1
This test method is under the jurisdiction of ASTM Committee D20 on Plastics
and is the direct responsibility of Subcommittee D20.18 on Reinforced Thermoset-
2
ting Plastics. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Dec. 1, 2017. Published January 2018. Originally contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
approved in 1965. Last previous edition approved in 2009 as D2343 - 09. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/D2343-17. 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

---------------------- Page: 1 ----------------------
D2343 − 17
specifically for use with certain generic types of plastics. The 6.1.3 Impregnation Tank, as illu
...

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: D2343 − 09 D2343 − 17
Standard Test Method for
Tensile Properties of Glass Fiber Strands, Yarns, and
1
Rovings Used in Reinforced Plastics
This standard is issued under the fixed designation D2343; 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 test method covers the determination of the comparative tensile properties of glass fiber strands, yarns, and rovings in
the form of impregnated rod test specimens when tested under defined conditions of pretreatment, temperature, humidity, and
tension testing machine speed. This test method is applicable to continuous filament, glass fiber materials that have been coated
with a resin compatible sizing. This method is intended for use in quality control and R & D, and shouldis not intended to be used
to develop composites design data.
NOTE 1—This method is technically equivalent to the short method described in ISO 9163.
NOTE 2—Prime consideration should be given to the use of a polymeric binder that produces specimens that yield the highest consistent values for the
glass fiber material under test. Tensile properties may vary with specimen preparation, resin impregnation system, and speed and environment of testing.
Consequently, Consider these factors where precise comparative results are desired, these factors must be carefully controlled.desired.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
NOTE 3—Prime consideration should be given to the use of a polymeric binder that produces specimens that yield the highest consistent values for the
glass fiber material under test. Tensile properties may vary with specimen preparation, resin impregnation system, and speed and environment of testing.
Consequently, where precise comparative results are desired, these factors must be carefully controlled.
1.3 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.4 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
2
2.1 ASTM Standards:
D618 Practice for Conditioning Plastics for Testing
D883 Terminology Relating to Plastics
D3039/D3039M Test Method for Tensile Properties of Polymer Matrix Composite Materials
D5083 Test Method for Tensile Properties of Reinforced Thermosetting Plastics Using Straight-Sided Specimens
E4 Practices for Force Verification of Testing Machines
E6 Terminology Relating to Methods of Mechanical Testing
2.2 ISO Standard:
ISO 9163 Textile Glass—Rovings—Manufacture of Test Specimens and Determination of Tensile Strength of Impregnated
Rovings
3. Terminology
3.1 Definitions:
3.1.1 Definitions of terms and symbols relating to this test method appear in Terminologies E6 and D883.
1
This test method is under the jurisdiction of ASTM Committee D20 on Plastics and is the direct responsibility of Subcommittee D20.18 on Reinforced Thermosetting
Plastics.
Current edition approved Sept. 1, 2009Dec. 1, 2017. Published September 2009January 2018. Originally approved in 1965. Last previous edition approved in 20082009
as D2343 - 08.D2343 - 09. DOI: 10.1520/D2343-09.10.1520/D2343-17.
2
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

---------------------- Page: 1 ----------------------
D2343 − 17
4. Summary of Test Method
4.1 This test method consists of impregnating glass fiber stra
...