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ASTM G133-05

(Test Method)

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

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

SIGNIFICANCE AND USE
This test method is designed to simulate the geometry and motions that are experienced in many types of rubbing components whose normal operation results in periodic reversals in the direction of relative sliding. The wear resulting from this mode of movement may differ from that experienced by the same materials sliding continuously in only one direction (unidirectional sliding) even for comparable durations of contact. Test loads and speeds are to be determined by the severity of the proposed application or purpose of the testing. Either of two sets of testing conditions (designated Procedures A and B) may be used.
SCOPE
1.1 This test method covers 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.
1.3This 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
30-Apr-2005
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 G133-02 - Standard Test Method for Linearly Reciprocating Ball-on-Flat Sliding Wear
Effective Date
01-May-2005
Replaced By
ASTM G133-05e1 - 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
01-May-2005
Referred By
ASTM G203-10(2020) - Standard Guide for Determining Friction Energy Dissipation in Reciprocating Tribosystems
Effective Date
01-May-2005
Referred By
ASTM G204-21 - Standard Test Method for Damage to Contacting Solid Surfaces under Fretting Conditions
Effective Date
01-May-2005

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ASTM G133-05 - Standard Test Method for Linearly Reciprocating Ball-on-Flat Sliding WearASTM G133-05 - Standard Test Method for Linearly Reciprocating Ball-on-Flat Sliding Wear
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ASTM G133-05 - 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:G133–05
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 G117 Guide for Calculating and Reporting Measures of
Precision Using Data from Interlaboratory Wear or Ero-
1.1 This test method covers laboratory procedures for de-
sion Tests
termining the sliding wear of ceramics, metals, and other
G118 Guide for Recommended Format of Wear Test Data
candidate wear-resistant materials using a linear, reciprocating
Suitable for Databases
ball-on-flat plane geometry. The direction of the relative
motion between sliding surfaces reverses in a periodic fashion
3. Terminology
such that the sliding occurs back and forth and in a straight
3.1 Definitions—Definitions used in this test method are
line. The principal quantities of interest are the wear volumes
given in Terminology G40. The following definitions of
ofthecontactingballandflatspecimenmaterials;however,the
important terms used in this test method are cited from
coefficient of kinetic friction may also be measured using the
TerminologyG40.
method described. This test method encompasses both unlu-
3.1.1 friction force—the resisting force tangential to the
bricated and lubricated testing procedures. The scope of this
interface between two bodies when, under the action of an
test method does not include testing in corrosive or chemically
externalforce,onebodymovesortendstomoverelativetothe
aggressive environments.
other.
1.2 The values stated in SI units are to be regarded as the
3.1.2 Hertzian contact pressure—themagnitudeofthepres-
standard. The values given in parentheses are for information
sure at any specified location in a Hertzian contact area, as
only.
calculated from Hertz’s equations of elastic deformation.
1.3 This standard does not purport to address all of the
3.1.3 wear—damage to a solid surface, generally involving
safety concerns, if any, associated with its use. It is the
theprogressivelossofmaterialduetorelativemotionbetween
responsibility of the user of this standard to establish appro-
that surface and a contacting surface or surfaces.
priate safety and health practices and determine the applica-
3.1.4 wear rate—the rate of material removal or dimen-
bility of regulatory limitations prior to use.
sional change due to wear per unit of exposure parameter, for
2. Referenced Documents example, quantity removed (mass, volume, thickness) in unit
2
distance of sliding or unit time.
2.1 ASTM Standards:
E112 Test Methods for Determining Average Grain Size
4. Summary of Test Method
E1181 TestMethodsforCharacterizingDuplexGrainSizes
4.1 This test method involves two specimens—a flat speci-
G40 Terminology Relating to Erosion and Wear
menandasphericallyendedspecimen(hereincalledthe“ball”
G99 Test Method for Wear Testing with a Pin-on-Disk
specimen) which slides against the flat specimen. These
Apparatus
specimens move relative to one another in a linear, back and
G115 Guide for Measuring and Reporting Friction Coeffi-
forth sliding motion, under a prescribed set of conditions.
cients
4.2 In this test method, the load is applied vertically
downward through the ball specimen against the horizontally
mounted flat specimen. The normal load, stroke length, fre-
1
This test method is under the jurisdiction of ASTM Committee G02 on Wear
quency and type of oscillation, test temperature, lubricant (if
and Erosion and is the direct responsibility of Subcommittee G02.40 on Non-
any), test duration, and atmospheric environment (including
Abrasive Wear.
relative humidity range) are selected from one of two proce-
Current edition approved May 1, 2005. Published May 2005. Originally
approved in 1995. Last previous edition approved in 2002 as G133–02.
dures.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
4.3 Since this test method involves reciprocating sliding
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
where changes in the sliding velocity and direction of motion
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. occur during the test, constant velocity conditions are not
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
G133–05
FIG. 1 Reciprocating Test—Schematic Diagram
maintained.The manner in which the velocity varies with time the ball and the flat. Temperature measurement and control
isdeterm
...

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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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