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ASTM G133-02

(Test Method)

Standard Test Method for Linearly Reciprocating Ball-on-Flat Sliding Wear

Standard Test Method for Linearly Reciprocating Ball-on-Flat Sliding Wear

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1.1 This test method describes laboratory procedures for determining the sliding wear of ceramics, metals, and other candidate wear-resistant materials using a linear, reciprocating ball-on-flat plane geometry. The direction of the relative motion between sliding surfaces reverses in a periodic fashion such that the sliding occurs back and forth and in a straight line. The principal quantities of interest are the wear volumes of the contacting ball and flat specimen materials; however, the coefficient of kinetic friction may also be measured using the method described. This test method encompasses both unlubricated and lubricated testing procedures. The scope of this test method does not include testing in corrosive or chemically aggressive environments.
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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

Status
Historical
Publication Date
09-Nov-2002
ICS
19.060 - Mechanical testing
Technical Committee
G02 - Wear and Erosion
Drafting Committee
G02.40 - Non-Abrasive Wear
Current Stage
Ref Project

Relations

Replaces
ASTM G133-95(2002)e1 - Standard Test Method for Linearly Reciprocating Ball-on-Flat Sliding Wear
Effective Date
10-Nov-2002
Replaced By
ASTM G133-05 - Standard Test Method for Linearly Reciprocating Ball-on-Flat Sliding Wear
Effective Date
01-May-2005
Referred By
ASTM G115-10(2018) - Standard Guide for Measuring and Reporting Friction Coefficients
Effective Date
10-Nov-2002
Referred By
ASTM G204-21 - Standard Test Method for Damage to Contacting Solid Surfaces under Fretting Conditions
Effective Date
10-Nov-2002
Referred By
ASTM G203-10(2020) - Standard Guide for Determining Friction Energy Dissipation in Reciprocating Tribosystems
Effective Date
10-Nov-2002

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ASTM G133-02 - Standard Test Method for Linearly Reciprocating Ball-on-Flat Sliding WearASTM G133-02 - Standard Test Method for Linearly Reciprocating Ball-on-Flat Sliding Wear
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ASTM G133-02 - Standard Test Method for Linearly Reciprocating Ball-on-Flat Sliding Wear
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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:G133–02
Standard Test Method for
1
Linearly Reciprocating Ball-on-Flat Sliding Wear
This standard is issued under the fixed designation G133; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope G118 Guide for Recommended Format of Wear Test Data
3
Suitable for Databases
1.1 This test method describes laboratory procedures for
determining the sliding wear of ceramics, metals, and other
3. Terminology
candidate wear-resistant materials using a linear, reciprocating
3.1 Definitions—Definitions used in this test method are
ball-on-flat plane geometry. The direction of the relative
given in Terminology G40. The following definitions of
motion between sliding surfaces reverses in a periodic fashion
important terms used in this test method are cited from
such that the sliding occurs back and forth and in a straight
TerminologyG40.
line. The principal quantities of interest are the wear volumes
3.1.1 friction force—the resisting force tangential to the
ofthecontactingballandflatspecimenmaterials;however,the
interface between two bodies when, under the action of an
coefficient of kinetic friction may also be measured using the
externalforce,onebodymovesortendstomoverelativetothe
method described. This test method encompasses both unlu-
other.
bricated and lubricated testing procedures. The scope of this
3.1.2 Hertzian contact pressure—themagnitudeofthepres-
test method does not include testing in corrosive or chemically
sure at any specified location in a Hertzian contact area, as
aggressive environments.
calculated from Hertz’s equations of elastic deformation.
1.2 The values stated in SI units are to be regarded as the
3.1.3 wear—damage to a solid surface, generally involving
standard. The values given in parentheses are for information
theprogressivelossofmaterial,duetorelativemotionbetween
only.
that surface and a contacting surface or surfaces.
1.3 This standard does not purport to address all of the
3.1.4 wear rate—the rate of material removal or dimen-
safety concerns, if any, associated with its use. It is the
sional change due to wear per unit of exposure parameter, for
responsibility of the user of this standard to establish appro-
example, quantity removed (mass, volume, thickness) in unit
priate safety and health practices and determine the applica-
distance of sliding or unit time.
bility of regulatory limitations prior to use.
4. Summary of Test Method
2. Referenced Documents
4.1 This test method involves two specimens—a flat speci-
2.1 ASTM Standards:
2 menandasphericallyendedspecimen(hereincalledthe“ball”
E112 Test Methods for Determining Average Grain Size
specimen) which slides against the flat specimen. These
E1181 Test Methods for Characterizing Duplex Grain
2 specimens move relative to one another in a linear, back and
Sizes
3 forth sliding motion, under a prescribed set of conditions.
G40 Terminology Relating to Erosion and Wear
4.2 In this test method, the load is applied vertically
G99 Test Method for Wear Testing with a Pin-on-Disk
3 downward through the ball specimen against the horizontally
Apparatus
mounted flat specimen. The normal load, stroke length, fre-
G115 Guide for Measuring and Reporting Friction Coeffi-
3 quency and type of oscillation, test temperature, lubricant (if
cients
any), test duration, and atmospheric environment (including
G117 Guide for Calculating and Reporting Measures of
relative humidity range) are selected from one of two proce-
Precision Using Data from Interlaboratory Wear or Ero-
3
dures.
sion Tests
4.3 Since this test method involves reciprocating sliding
where changes in the sliding velocity and direction of motion
1
This test method is under the jurisdiction of ASTM Committee G02 on Wear occur during the test, constant velocity conditions are not
and Erosion and is the direct responsibility of Subcommittee G02.40 on Non-
maintained.The manner in which the velocity varies with time
Abrasive Wear.
isdeterminedbythedesignofthemechanismwhichdrivesthe
Current edition approved Nov. 10, 2002. Published January 2003. Originally
e1
ball or flat specimen back and forth.
approved in 1995. Last previous edition approved in 2002 as G133–95 (2002) .
2
Annual Book of ASTM Standards, Vol 03.01.
3
Annual Book of ASTM Standards, Vol 03.02.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
G133–02
FIG. 1 Reciprocating Test—Schematic Diagram
4.4 Dimensional changes for both ball and flat specimens without lubricant. The tangential force ca
...

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5.1 The significance of this test method in any overall measurement program directed toward a service application will depend on the relative match of test conditions to the conditions of the service application.  
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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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
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Standard Test Method for Ranking Resistance of Plastic Materials to Sliding Wear Using a Block-On-Ring Configuration

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5.1 The specific wear rates determined by this test method can be used as a guide in ranking the wear resistance of plastic materials. The specific wear rate is not a material property and will therefore differ with test conditions and test geometries. The significance of this test will depend on the relative similarity to the actual service conditions.  
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1.5 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.  
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4.1 Cycle counting is used to summarize (often lengthy) irregular load-versus-time histories by providing the number of times cycles of various sizes occur. The definition of a cycle varies with the method of cycle counting. These practices cover the procedures used to obtain cycle counts by various methods, including level-crossing counting, peak counting, simple-range counting, range-pair counting, and rainflow counting. Cycle counts can be made for time histories of force, stress, strain, torque, acceleration, deflection, or other loading parameters of interest.
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