ASTM International - ASTM D7690-11(2017)

Standard Practice for Microscopic Characterization of Particles from In-Service Lubricants by Analytical Ferrography

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Organization: ASTM International
Publication Date: 1 May 2017
Status: active
Page Count: 11
ICS Code (Lubricants, industrial oils and related products): 75.100
significance And Use:

5.1 The objective of ferrography is to diagnose the operational condition of the machine sampled based on the quantity and type of particles observed in the oil. After break-in, normally running... View More

scope:

1.1 This practice covers the identification by optical microscopy of wear and contaminant particles commonly found in used lubricant and hydraulic oil samples that have been deposited on ferrograms. This practice relates to the identification of particles, but not to methods of determining particle concentration.

1.2 This practice interfaces with but generally excludes particles generated in the absence of lubrication, such as may be generated by erosion, impaction, gouging, or polishing.

1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

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.

1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Document History

ASTM D7690-11(2017)
May 1, 2017
Standard Practice for Microscopic Characterization of Particles from In-Service Lubricants by Analytical Ferrography
5.1 The objective of ferrography is to diagnose the operational condition of the machine sampled based on the quantity and type of particles observed in the oil. After break-in, normally running...
January 1, 2011
Standard Practice for Microscopic Characterization of Particles from In-Service Lubricants by Analytical Ferrography
The objective of ferrography is to diagnose the operational condition of the machine sampled based on the quantity and type of particles observed in the oil. After break-in, normally running machines...
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