ASTM D4975-02a

Standard Test Methods for Single-Filament Tire Bead Wire Made from Steel

SCOPE
1.1 These test methods cover testing of single-filament steel wires that are components of tire beads used in the manufacture of pneumatic tires. By agreement, these test methods may be applied to similar filaments used for reinforcing other rubber products.
1.2 These test methods describe test procedures only and do not establish specifications and tolerances.
1.3 This standard is written in SI units. No other units of measurement are included in this standard.
1.4 These test methods cover the determination of the mechanical properties listed below:
1.5 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.PropertySectionBreaking Force (Strength)7-13Yield Strength7-13Elongation7-13Torsion Resistance14-20Diameter (Gage)21-27

General Information

• Status: Historical
• Publication Date: 09-Sep-2002
• ICS: 77.140.65 - Steel wire, wire ropes and link chains
• ICS: 83.160.10 - Road vehicle tyres
• Technical Committee: D13 - Textiles
• Drafting Committee: D13.19 - Industrial Fibers and Metallic Reinforcements

Relations

• Replaces: ASTM D4975-02 - Standard Test Methods for Single-Filament Tire Bead Wire Made from Steel
• Effective Date: 10-Sep-2002
• Replaced By: ASTM D4975-04 - Standard Test Methods for Single-Filament Tire Bead Wire Made from Steel
• Effective Date: 01-Oct-2004
• Referred By: ASTM D6477-23 - Standard Terminology Relating to Tire Cord, Bead Wire, Hose Reinforcing Wire, and Fabrics
• Effective Date: 10-Sep-2002

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D 4975 – 02a
Standard Test Methods for
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Single-Filament Tire Bead Wire Made from Steel
This standard is issued under the fixed designation D 4975; 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. Scope D 6477 Terminology Relating to Tire Cord, Bead Wire,
4
Hose Reinforcing Wire and Fabrics
1.1 These test methods cover testing of single-filament steel
E 6 Terminology Relating to Methods of Mechanical Test-
wires that are components of tire beads used in the manufacture
5
ing
of pneumatic tires. By agreement, these test methods may be
5
E 558 Test Method for Torsion Testing of Wire
applied to similar filaments used for reinforcing other rubber
products.
3. Terminology
1.2 These test methods describe test procedures only and do
3.1 Definitions:
not establish specifications and tolerances.
3.1.1 For definitions of terms relating to tire cord, bead wire,
1.3 This standard is written in SI units. No other units of
hose reinforcing wire and fabrics, refer to Terminology
measurement are included in this standard.
D 6477.
1.4 These test methods cover the determination of the
3.1.2 For definitions of other textile terms, refer to Termi-
mechanical properties listed below:
nology D 123.
1.5 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
4. Summary of Test Methods
responsibility of the user of this standard to establish appro-
4.1 A summary of the procedures prescribed for the deter-
priate safety and health practices and determine the applica-
mination of specific properties of tire bead wire is stated in the
bility of regulatory limitations prior to use.
appropriate sections of the specific test methods that follow.
Property Section
5. Significance and Use
Breaking Force (Strength) 7-13
Yield Strength 7-13
5.1 The procedures for the determination of properties of
Elongation 7-13
single-filament bead wire made from steel are considered
Torsion Resistance 14-20
Diameter (Gage) 21-27
satisfactory for acceptance testing of commercial shipments of
this product because the procedures are the best available and
2. Referenced Documents
have been used extensively in the trade.
2.1 ASTM Standards:
5.1.1 In case of a dispute arising from differences in
A 370 Test Methods and Definitions for Mechanical Testing
reported test results when using these test methods for accep-
2
of Steel Products
tance testing of commercial shipments, the purchaser and
D 76 Specification for Tensile Testing Machines for Tex-
supplier should conduct comparative test to determine if there
3
tiles
is a statistical bias between their laboratories. Competent
3
D 123 Terminology Relating to Textiles
statistical assistance is recommended for the investigation of
3
D 2969 Test Method for Steel Tire Cords
bias. As a minimum, the two parties should take a group of test
D 4848 Terminology of Force, Delamination, and Related
specimens which are as homogeneous as possible and which
4
Properties of Textiles
are from a lot of material of the type in question. The test
specimens then should be randomly assigned in equal number
to each laboratory for testing. The average results from the two
1
laboratories should be compared using Student’s t-test for
These test methods are under the jurisdiction of ASTM Committee D13 on
Textiles and are the direct responsibility of Subcommittee D13.19 on Tire Cord and unpaired data and an acceptable probability level chosen by the
Fabrics.
two parties before testing is begun. If a bias is found, either its
Current edition approved Sept. 10, 2002. Published November 2002. Originally
cause must be determined and corrected or the purchaser and
published as D 4975 – 89. Last previous edition D 4975 – 02.
2
Annual Book of ASTM Standards, Vol 01.03.
3
Annual Book of ASTM Standards, Vol 07.01.
4 5
Annual Book of ASTM Standards, Vol 07.02. Annual Book of ASTM Standards, Vol 03.01.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D 4975 – 02a
the supplier must agree to interpret future test results with and print the results for each of these desired properties.
consideration to the known bias. Because of the variety of electronic equipment available and
the various possibilities for recording test data, use of this type
6. Sampling
of equipment is not covered in this test method.
6.1 Lot Sample—As a lot sample for acceptance testing,
9.3 Grips, of such design that failure of the specimen does
take at random the number of reels, coils, sp
...