ASTM D4963/D4963M-22
(Test Method)Standard Test Method for Ignition Loss of Glass Fiber Strands and Fabrics
Standard Test Method for Ignition Loss of Glass Fiber Strands and Fabrics
SIGNIFICANCE AND USE
5.1 This test method is considered satisfactory for acceptance testing of commercial shipments because current estimates of between-laboratory precision are acceptable.
5.1.1 In cases of a dispute arising from differences in reported test results when using this test method for acceptance testing of commercial shipments, the purchaser and the supplier should conduct comparative tests to determine if there is a statistical bias between their laboratories. Competent statistical assistance is recommended for the investigation of bias. As a minimum, the two parties should take a group of test specimens which are as homogeneous as possible and which are from a lot of material of the type in question. The test specimens should then be randomly assigned in equal numbers to each laboratory for testing. The average results from the two laboratories should be compared using Student's t-test for unpaired data and an acceptable probability level chosen by the two parties before the testing begins. If a bias is found, either its cause must be found and corrected or the purchaser and the supplier must agree to interpret future test results in the view of the known bias.
5.2 Glass fiber textiles are provided with various sizings or coatings. These provide a protection for the individual fibers, yarns, or fabric that may compose the glass fiber textile as well as compatibility with further finishing requirements. The amount of sizing or coating on glass fiber textiles as determined by this procedure is used for process control.
SCOPE
1.1 This test method covers primarily the determination of ignition loss of glass fiber textiles. This method applies to glass fiber strands, twisted or untwisted, coated or uncoated; and fabrics, woven, nonwoven, knitted, coated, and uncoated, and chopped strand. This procedure may be applied to other glass textiles where the amount of organic content obtained by ignition loss is required.
Note 1: This test method may be used with other glass fiber classifications, such as C or D, but a different ignition temperature and exposure time may be required. In these cases the manufacturer should be consulted for the appropriate ignition conditions.
1.2 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.
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
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: D4963/D4963M − 22
Standard Test Method for
1
Ignition Loss of Glass Fiber Strands and Fabrics
This standard is issued under the fixed designation D4963/D4963M; 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 D578 Specification for Glass Fiber Strands
D7018 Terminology Relating to Glass Fiber and Its Products
1.1 This test method covers primarily the determination of
ignition loss of glass fiber textiles.This method applies to glass
3. Terminology
fiber strands, twisted or untwisted, coated or uncoated; and
3.1 Definitions—For all terminology related to Subcommit-
fabrics, woven, nonwoven, knitted, coated, and uncoated, and
tee D13.18 on Glass Fibers, see Terminology D7018.
chopped strand. This procedure may be applied to other glass
3.2 For definitions of other textile terms used in this test
textiles where the amount of organic content obtained by
method, refer to Terminology D123. For information on the
ignition loss is required.
designation of construction of glass strands, refer to Specifi-
NOTE 1—This test method may be used with other glass fiber
classifications, such as C or D, but a different ignition temperature and
cation D578.
exposure time may be required. In these cases the manufacturer should be
consulted for the appropriate ignition conditions. 4. Summary of Test Method
1.2 The values stated in either SI units or inch-pound units
4.1 The organic content on glass fiber textiles is determined
are to be regarded separately as standard. The values stated in
by weighing the specimen before and after ignition. The
each system are not necessarily exact equivalents; therefore, to
amount of ignition loss on a sample is reported as a percentage
ensure conformance with the standard, each system shall be
of the total mass before ignition.
used independently of the other, and values from the two
5. Significance and Use
systems shall not be combined.
5.1 This test method is considered satisfactory for accep-
1.3 This standard does not purport to address all of the
tance testing of commercial shipments because current esti-
safety concerns, if any, associated with its use. It is the
mates of between-laboratory precision are acceptable.
responsibility of the user of this standard to establish appro-
5.1.1 In cases of a dispute arising from differences in
priate safety, health, and environmental practices and deter-
reported test results when using this test method for acceptance
mine the applicability of regulatory limitations prior to use.
testing of commercial shipments, the purchaser and the sup-
1.4 This international standard was developed in accor-
plier should conduct comparative tests to determine if there is
dance with internationally recognized principles on standard-
a statistical bias between their laboratories. Competent statis-
ization established in the Decision on Principles for the
tical assistance is recommended for the investigation of bias.
Development of International Standards, Guides and Recom-
As a minimum, the two parties should take a group of test
mendations issued by the World Trade Organization Technical
specimens which are as homogeneous as possible and which
Barriers to Trade (TBT) Committee.
are from a lot of material of the type in question. The test
specimens should then be randomly assigned in equal numbers
2. Referenced Documents
to each laboratory for testing.The average results from the two
2
2.1 ASTM Standards:
laboratories should be compared using Student’s t-test for
D123 Terminology Relating to Textiles
unpaireddataandanacceptableprobabilitylevelchosenbythe
two parties before the testing begins. If a bias is found, either
its cause must be found and corrected or the purchaser and the
1
This test method is under the jurisdiction ofASTM Committee D13 on Textiles
suppliermustagreetointerpretfuturetestresultsintheviewof
and is the direct responsibility of Subcommittee D13.18 on Glass Fiber and its
the known bias.
Products.
CurrenteditionapprovedJune1,2022.PublishedJuly2022.Originallyapproved
5.2 Glass fiber textiles are provided with various sizings or
in 1989. Last previous edition approved in 2011 as D4963 – 11 which was
coatings. These provide a protection for the individual fibers,
withdrawn in January 2020 and reinstated in June 2022. DOI: 10.1520/D4963_
D4963-22.
yarns, or fabric that may compose the glass fiber textile as well
2
For referenced ASTM standards, visit the ASTM website, www.astm.
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