Standard Test Methods for Tension Testing of Nonmetallic Gasket Materials

SIGNIFICANCE AND USE
These test methods are described in order to standardize procedures for determining the tensile strength of nonmetallic gasket materials. The measurement of this property characterizes various classes and grades of materials of a given type and in so doing, it will give the manufacturer a measurement of the quality of his product. It also will aid the purchaser of the gasketing materials to be able to determine whether the gasket material that he has approved for a given application is being manufactured in acceptable quality.
The measurement of this property should not be misconstrued as to give the purchaser of the gasket material an indication of the performance of that material in application.
The property may be useful in establishing material specifications.
Various procedures are given for the different types of materials, and in order to compare the results from one laboratory to another, it is imperative that the applicable procedure be selected.
Various types of tension-testing apparatus are allowed to be used. These types of equipment can produce different indicated results. Laboratories having different equipment may have to establish correlations between each other; otherwise, misinterpretation of the test data could result.
SCOPE
1.1 These test methods cover the determination of tensile strength of certain nonmetallic gasketing materials at room temperature. The types of materials covered are those containing asbestos and other inorganic fibers (Type 1), cork (Type 2), cellulose or other organic fiber (Type 3), and flexible graphite (Type 5) as described in Classification F 104. These test methods are not applicable to the testing of vulcanized rubber, a method for which is described in Test Methods D 412 nor for rubber O-rings, a method for which is described in Test Methods D 1414.
1.2 The values stated in SI units are to be regarded as the standard. The values 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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

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Historical
Publication Date
14-Jan-1995
Technical Committee
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ASTM F152-95(2002) - Standard Test Methods for Tension Testing of Nonmetallic Gasket Materials
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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:F152–95 (Reapproved 2002)
Standard Test Methods for
Tension Testing of Nonmetallic Gasket Materials
This standard is issued under the fixed designation F 152; 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 (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 3.1.2 specimen—a piece of material appropriately shaped
and prepared so that it is ready for a test.
1.1 These test methods cover the determination of tensile
3.1.3 tensile strength—the maximum tensile stress applied
strength of certain nonmetallic gasketing materials at room
during stretching a specimen to rupture.
temperature. The types of materials covered are those contain-
3.1.4 tensile stress—the applied force per unit or original
ing asbestos and other inorganic fibers (Type 1), cork (Type 2),
cross-sectional area of the specimen.
cellulose or other organic fiber (Type 3), and flexible graphite
(Type 5) as described in Classification F 104. These test
4. Significance and Use
methods are not applicable to the testing of vulcanized rubber,
4.1 These test methods are described in order to standardize
a method for which is described in Test Methods D 412 nor for
procedures for determining the tensile strength of nonmetallic
rubber O-rings, a method for which is described in Test
gasket materials. The measurement of this property character-
Methods D 1414.
izes various classes and grades of materials of a given type and
1.2 The values stated in SI units are to be regarded as the
in so doing, it will give the manufacturer a measurement of the
standard. The values in parentheses are for information only.
quality of his product. It also will aid the purchaser of the
1.3 This standard does not purport to address all of the
gasketing materials to be able to determine whether the gasket
safety concerns, if any, associated with its use. It is the
material that he has approved for a given application is being
responsibility of the user of this standard to establish appro-
manufactured in acceptable quality.
priate safety and health practices and determine the applica-
4.2 The measurement of this property should not be mis-
bility of regulatory limitations prior to use.
construed as to give the purchaser of the gasket material an
2. Referenced Documents indication of the performance of that material in application.
4.3 The property may be useful in establishing material
2.1 ASTM Standards:
specifications.
D 412 Test Methods for Vulcanized Rubber and Thermo-
4.4 Various procedures are given for the different types of
plastic Rubbers and Thermoplastic Elastomers— Tension
3 materials, and in order to compare the results from one
D 1414 Test Methods for Rubber O-Rings
laboratory to another, it is imperative that the applicable
E 4 Practices for Force Verification of Testing Machines
procedure be selected.
E 691 Practice for Conducting an Interlaboratory Study to
4.5 Varioustypesoftension-testingapparatusareallowedto
Determine the Precision of a Test Method
be used. These types of equipment can produce different
F 104 Classification System for Nonmetallic Gasket Mate-
indicated results. Laboratories having different equipment may
rials
have to establish correlations between each other; otherwise,
3. Terminology
misinterpretation of the test data could result.
3.1 Definitions:
5. Apparatus
3.1.1 sample—a unit or section of a unit taken from a
5.1 Dies—The inside faces of the dies shall be polished and
sampling lot.
be perpendicular to the plane formed by the cutting edges for
a depth of at least 5 mm (0.2 in.). The dies shall be sharp and
These test methods are under the jurisdiction of ASTM Committee F03 on
free of nicks in order to prevent ragged edges on the specimen.
Gaskets and are the direct responsibility of Subcommittee F03.20 on Mechanical
5.2 Dial Micrometers—In accordance with 9.1 of Classifi-
Test Methods.
cation F 104.
Current edition approved Jan. 15, 1995. Published March 1995. Originally
published as F152 – 72. Last previous edition F152 – 93.
5.3 Testing Machine—Tension tests shall be made on a
Annual Book of ASTM Standards, Vol 09.01.
power-driven machine, so equipped that a constant rate of grip
Annual Book of ASTM Standards, Vol 09.02.
4 separation shall be maintained, and with an indicating or
Annual Book of ASTM Standards, Vol 03.01.
Annual Book of ASTM Standards, Vol 14.02. recording device for measuring the resulting force within
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
F152
62 %. The tester shall have two grips and a mechanism for 7.3 Method C, for Cellulosic or Other Organic Fiber-
separating the grips at a uniform rate, which will be maintained Containing Gasket Materials:
during the test within 65 % of the desired rate of separation. 7.3.1 The specimens shall be 25.4 by 152.4 mm (1 by 6 in.).
The grips shall be either wedged or toggle type, designed to The lengthwise dimension shall be perpendicular to the grain
transmit the applied force over a large surface area of the direction of the material.
specimen. 7.3.2 Place them in the machine with a 102-mm (4-in.)
5.3.1 Calibrate the testing machine in accordance with distance between the jaws and drive the jaw at 305 6 25 mm
Procedure A of Practices E 4. (12 6 1 in.)/min. Specimens of 12.7-mm (0.50-in.) width may
be used where necessary to
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