The linear wear test, ASTM G, reproduces the linear reciprocating motion found in many real-world tribology mechanisms. ASTM G – Designation: G – 02 Standard Test Method for Linearly Reciprocating Ball-on-Fla. ASTM G – – Download as PDF File .pdf), Text File .txt) or read online. ASTM G –

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A block holder is used to hold the block. Commercial designations for materials should be given, if applicable. Tests involving proprietary materials are speci? The scope of this test method does not include testing in corrosive or chemically aggressive environments. It should therefore not be assumed that the same relative wear volumes would be obtained if materials for ball and?


Friction force and normal force data are measured to obtain the coefficient of friction. NOTE 2—This procedure requires full-immersion lubrication. G — 02 friction forces generated during sliding.

If other methods, such a controlled drip feeding system, are used to simulate certain applications, the provisions of 8.

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Two wear tests were performed on each? In this test method, wear is reported only as the total volume lost after a set period of sliding. Nominal friction coefficient values were obtained from chart recordings of the root-mean-square friction force.

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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.

A Real-Life Case Study. Automotive New fuel cell concept brings biological design to better electricity generation Briefs: Piston ring segment holder Comprehensive tribology testing plays an important role in automotive applications. The specimen materials were the same as those described in Table X1.

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Stepper-type motors may also be used provided that the motion is smooth and uniform. A fresh supply of lubricant shall be used for each test unless the objective is to evaluate the effects of used lubricants on friction and wear. Testing gg133 days with similar humidity readings is a less-desirable alternative.

Tests include evaluation of base materials, heat-treated parts, surface coatings, and lubricants. To measure the wear, it is necessary to clean the specimens in such a way that the surface features astj not altered.

Eight replicate tests were performed in one laboratory to evaluate the repeatability of this procedure. Surface roughnesses of 0. Asm New fuel cell concept brings biological design to better electricity A calibrated ocular or a photomicrograph of known magni?

Linear Reciprocating (ASTM G133)

Link to Active This link will always route to the current Active version of the standard. The coefficient of variation of the wear volume of the? This test is also applicable to addressing tribological concerns for engine valve stems and rollers, including measurement of hardness and modulus of valve material, and wear tests on the valve and cylinder head interface.


Test loads and speeds are to be determined by the severity of the proposed application or purpose of the testing. The load, stroke length, frequency of oscillation, temperature, condition of lubrication, and test duration are selected from one of the two procedures see Table.

Wear test results are usually reported as the volume of material lost for the block. Either of two sets of testing conditions designated Procedures A and B may be used.

If procedures other than A or B are used, the report should explicitly state so, listing the conditions which are different than those described in 8. If you feel that your comments have not received a fair hearing you should make your views known to asm ASTM Committee on Standards, at the address shown below. Further guidance in measuring and reporting friction data may be found in Guide G The scope of this test method does not include testing in corrosive or chemically aggressive environments.

A number in parentheses indicates the year of last reapproval.