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ASTM D6425-05

Historical Revision

Standard Test Method for Measuring Friction and Wear Properties of Extreme Pressure (EP) Lubricating Oils Using SRV Test Machine

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1.1 This test method covers an extreme pressure (EP) lubricating oil's coefficient of friction and its ability to protect against wear when subjected to high-frequency, linear oscillation motion. The procedure is identical to that described in DIN 51834.

1.2 This test method can also be used to determine the ability of a non-EP lubricating oil to protect against wear and its coefficient of friction under similar test conditions.

1.3 The values stated in SI units are to be regarded as the standard. The vlaues given in parentheses are for information only.

1.4 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.


This test method can be used to determine anti-wear properties and coefficient of friction of EP lubricating oils at selected temperatures and loads specified for use in applications in which high-speed vibrational or start-stop motions are present for extended periods of time under initial high Hertzian point contact pressures. It has found application as a screening test for lubricants used in gear or cam/follower systems. Users of this test method should determine whether results correlate with field performance or other applications.

SDO ASTM: ASTM International
Document Number D6425
Publication Date July 1, 2005
Language en - English
Page Count 7
Revision Level 05
Supercedes
Committee D02.L0
Publish Date Document Id Type View
Nov. 1, 2023 D6425-23 Revision
Dec. 15, 2019 D6425-19 Revision
Oct. 1, 2017 D6425-17 Revision
Dec. 1, 2011 D6425-11 Revision
July 1, 2005 D6425-05 Revision
Dec. 10, 2002 D6425-02 Revision
June 10, 1999 D6425-99 Revision
May 1, 2010 D6425-05R10E01 Reaffirmation