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ASTM D6770-02e1

(Test Method)

Standard Test Method for Abrasion Resistance of Textile Webbing (Hex Bar Method)

Standard Test Method for Abrasion Resistance of Textile Webbing (Hex Bar Method)

SCOPE
1.1 This test method covers the determination of abrasion resistance of textile webbing using a hex bar abrasion tester.
1.1.1 The resistance is expressed as a percentage of retained break strength.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as the standard. Within the text, the inch-pound units are shown in parentheses. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with this test method.
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

Status
Historical
Publication Date
09-Feb-2002
ICS
59.080.30 - Textile fabrics
Technical Committee
D13 - Textiles
Drafting Committee
D13.60 - Fabric Physical Test Methods B
Current Stage
Ref Project

Relations

Replaces
ASTM D6770-02 - Standard Test Method for Abrasion Resistance of Textile Webbing (Hex Bar Method)
Effective Date
10-Feb-2002
Replaced By
ASTM D6770-07 - Standard Test Method for Abrasion Resistance of Textile Webbing (Hex Bar Method)
Effective Date
01-Jul-2007
Referred By
ASTM D4850-23 - Standard Terminology Relating to Fabrics and Fabric Test Methods
Effective Date
10-Feb-2002

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ASTM D6770-02e1 - Standard Test Method for Abrasion Resistance of Textile Webbing (Hex Bar Method)ASTM D6770-02e1 - Standard Test Method for Abrasion Resistance of Textile Webbing (Hex Bar Method)
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ASTM D6770-02e1 - Standard Test Method for Abrasion Resistance of Textile Webbing (Hex Bar Method)
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Standards Content (Sample)

e1
Designation: D 6770 – 02
Standard Test Method for
1
Abrasion Resistance of Textile Webbing (Hex Bar Method)
This standard is issued under the fixed designation D 6770; 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.
1
e NOTE—Figure 1 was corrected editorially in May 2002.
1. Scope 3.1.1 abrasion, n—the wearing away of any part of a
material by rubbing against another surface.
1.1 This test method covers the determination of abrasion
3.1.2 abrasion cycle, n—one or more movements of an
resistance of textile webbing using a hex bar abrasion tester.
abradant across a material surface, or the material surface
1.1.1 The resistance is expressed as a percentage of retained
acrosstheabradant,thatpermitsareturntoitsstartingposition.
break strength.
3.1.2.1 Discussion—The abrasion cycle is dependent on the
1.2 The values stated in either SI units or inch-pound units
programmed motions of the abrasion machine and the test
are to be regarded separately as the standard. Within the text,
standard used. It may consist of one back-and-forth unidirec-
the inch-pound units are shown in parentheses. The values
tional movement or one circular movement, or a combination
stated in each system may not be exact equivalents; therefore,
of both. For the hex bar abrasion method a cycle is comprised
each system shall be used independently of the other. Combin-
of two strokes.
ingvaluesfromthetwosystemsmayresultinnonconformance
3.1.3 breaking force, n—the maximum force applied to a
with this test method.
material carried to rupture. (Compare breaking point, breaking
1.3 This standard does not purport to address all of the
strength.)
safety concerns, if any, associated with its use. It is the
3.1.4 standard atmosphere for preconditioning textiles,
responsibility of the user of this standard to establish appro-
n—asetofcontrolledconditionshavingatemperaturenotover
priate safety and health practices and determine the applica-
50°C (122°F), with respective tolerance of 61°C (2°F), and a
bility of regulatory limitations prior to use.
relative humidity of 5 to 25 6 2 % for the selected humidity,
2. Referenced Documents
so that drying can be achieved prior to conditioning in the
standard atmosphere for testing textiles.
2.1 ASTM Standards:
2
3.1.5 standard atmosphere for testing textiles,
D 123 Terminology Relating to Textiles
2
n—laboratoryconditionsfortestingfibers,yarns,andfabricsin
D 1776 Practice for Conditioning and Testing Textiles
which air temperature and relative humidity are maintained at
2.2 Other Standard:
specific levels with established tolerances.
Federal Standard 191, Method 4108 “Strength and Elonga-
3.1.5.1 Discussion—Textile materials are used in a number
tion, Breaking; Textile Webbing, Tape and Braided
3
ofspecificend-useapplicationsthatfrequentlyrequiredifferent
Items”
testing temperatures and relative humidities. Specific condi-
3. Terminology
tioning and testing of textiles for end-product requirements can
be carried out as defined in Practice D 1776.
3.1 Definitions:
3.1.6 stroke, n—in hex bar abrasion testing, one-half of an
abrasion cycle that consists of one forward or one backward
1
motion.
This test method is under the jurisdiction ofASTM Committee D13 onTextiles
and is the direct responsibility of Subcommittee D13.60 on Fabrics, Specific.
3.1.7 webbing, n—in textiles, a stout narrow fabric with a
2 2
Current edition approved Feb. 10, 2002. Published March 2002.
massperunitareaofatleast0.5kg/m (0.1lb/ft )foreach25.4
2
Annual Book of ASTM Standards, Vol 07.01.
3 mm (1 in.) of width. (Compare narrow fabric, ribbon, and
Available from Superintendent of Documents, Government Printing Office,
Washington, DC 20402. tape.)
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
e1
D6770–02
3.2 For definitions of other textile terms used in this test tive tests should be performed to determine if there is a
method, refer to Terminology D 123. statistical bias between them, using competent statistical assis-
tance. As a minimum, use samples for such comparative tests
4. Summary of Test Method
thatareashomogenousaspossible,drawnfromthesamelotof
4.1 Abrasion resistance is measured by subjecting the speci-
material as the samples that resulted in disparate results during
men to unidirectional reciprocal rubbing over a specific bar
initial testing, and randomly assigned in equal numbers to each
under specified conditions of tension, stroke length and time.
laboratory. The test results from the laboratories involved
Resistance to abrasion is evaluated by determining the percent
should be compared using a statistical test for unpaired data, as
retention of breaking
...

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5.1 Acceptance Testing—This method of testing fabrics for resistance to pilling is not recommended for acceptance testing. If it is used for acceptance testing, it should be used with caution because the between-laboratory precision is poor. In some cases the purchaser and the supplier may have to test a commercial shipment of one or more specific materials by the best available test method, even though the test method is not recommended for acceptance testing.  
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1.1 This test method covers the determination of the propensity of a fabric to form pills and other related surface changes on textiles using the random tumble pilling tester. The procedure is generally applicable to all types of woven and knitted apparel fabrics.  
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5.1 Acceptance Testing—This method of testing fabrics resistance to pilling is not recommended for acceptance testing. If it is used for acceptance testing, it should be used with caution because interlaboratory data are not available. In some cases the purchaser or supplier may have to test a commercial shipment of one or more specific materials by the best available method even though the method has not been recommended for acceptance testing. Although this test method is not recommended for acceptance testing, it is useful because it is used widely outside the United States.  
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1.1 This test method covers the determination of the resistance to the formation of pills and other related surface changes on textile fabrics using the Martindale tester.
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Standard Test Method for Abrasion Resistance of Textile Fabrics (Martindale Abrasion Tester Method)

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5.1 Acceptance Testing—this test method is not considered satisfactory for acceptance testing of commercial shipments of fabric. The between-laboratory precision of this test method is poor and, because of the nature of abrasion testing itself, technicians frequently fail to obtain results in agreement on the same type of testing instrument, both within and between laboratories. Although this test method is not recommended for acceptance testing, it is useful because it is used widely, especially outside the United States.  
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5.2 The resistance to abrasion also is affected greatly by the conditions of the tests, such as the nature of abradant; variable action of the abradant over the area of specimen abraded, the tension on the specimen, the pressure between the specimen and abradant, and the dimensional changes in the specimen.  
5.3 Abrasion tests are all subject to variation due to changes in the abradant during specific tests. The abradant must be changed accordingly at freque...
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1.1 This test method covers the determination of the abrasion resistance of textile fabrics using the Martindale abrasion tester. The method is generally applicable to knit, woven, and nonwoven fabrics; however, material thickness may limit suitability for testing due to specimen holder capacity.  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
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.
Note 1: For other current test methods of testing the abrasion resistance of textiles refer to Test Methods D3884, D3885, D3886, D4157, D4158, and AATCC TM93.  
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.

  • Standard
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    English language
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  • Standard
    5 pages
    English language
    sale 15% off