Standard Test Method for Ferrous Debris Quantification

SIGNIFICANCE AND USE
5.1 By quantifying the concentration of total ferrous debris, this test method provides a direct indication of wear in the machinery by enabling the user to pinpoint when there is a deviation from the normal buildup of ferrous debris shed by the machinery or when the concentration of ferrous debris has exceeded safe operating limits. Specific guidance regarding such procedures may be found in Guides D7669, D7720, and D7874.  
5.2 This test method can be performed on-site and can be utilized as a particle-size insensitive, minimum sample preparation alternative to laboratory-based screening for abnormal machinery conditions due to the presence of wear debris by means of ferrography as described in Practice D7690, or elemental analysis methods such as atomic emission spectrometry, described in Test Methods D5185 and D6595.
SCOPE
1.1 This test method describes a means for quantitative determination of the concentration of ferrous debris in lubricants and greases.  
1.2 This test method provides a determination of the concentration of ferrous debris in the lubricant or grease from a nominal 0 mg/kg to 10 000 mg/kg (1 % by mass) or greater.  
1.3 This test method is applicable to all types of lubricating fluids (API Group I-V) and greases sampled from machinery and other mechanical equipment, including reciprocating engine oils, turbine oils, hydraulic oils, gear oils, and bearing greases.  
1.4 This test method describes a means by which a sample of lubricant or grease is placed in a magnetometer apparatus, which determines the concentration of ferrous debris and provides these readings directly to the operator without further calculation.  
1.5 This test method is applicable to in-service lubricants and greases at any stage of degradation.  
1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.7 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.  
1.8 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.

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Publication Date
31-May-2017
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ASTM D8120-17 - Standard Test Method for Ferrous Debris Quantification
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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.
Designation: D8120 −17
Standard Test Method for
1
Ferrous Debris Quantification
This standard is issued under the fixed designation D8120; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2. Referenced Documents
2
2.1 ASTM Standards:
1.1 This test method describes a means for quantitative
D4057 Practice for Manual Sampling of Petroleum and
determination of the concentration of ferrous debris in lubri-
Petroleum Products
cants and greases.
D4177 Practice for Automatic Sampling of Petroleum and
1.2 This test method provides a determination of the con-
Petroleum Products
centration of ferrous debris in the lubricant or grease from a
D5185 Test Method for Multielement Determination of
nominal 0 mg/kg to 10 000 mg/kg (1 % by mass) or greater.
Used and Unused Lubricating Oils and Base Oils by
Inductively Coupled Plasma Atomic Emission Spectrom-
1.3 This test method is applicable to all types of lubricating
etry (ICP-AES)
fluids (API Group I-V) and greases sampled from machinery
D5854 Practice for Mixing and Handling of Liquid Samples
and other mechanical equipment, including reciprocating en-
of Petroleum and Petroleum Products
gine oils, turbine oils, hydraulic oils, gear oils, and bearing
D6595 Test Method for Determination of Wear Metals and
greases.
Contaminants in Used Lubricating Oils or Used Hydraulic
1.4 This test method describes a means by which a sample
Fluids by Rotating Disc ElectrodeAtomic Emission Spec-
of lubricant or grease is placed in a magnetometer apparatus,
trometry
which determines the concentration of ferrous debris and
D7669 Guide for Practical Lubricant Condition Data Trend
provides these readings directly to the operator without further
Analysis
calculation.
D7690 Practice for Microscopic Characterization of Par-
ticles from In-Service Lubricants by Analytical Ferrogra-
1.5 This test method is applicable to in-service lubricants
phy
and greases at any stage of degradation.
D7718 Practice for Obtaining In-Service Samples of Lubri-
1.6 The values stated in SI units are to be regarded as cating Grease
standard. No other units of measurement are included in this D7720 Guide for Statistically Evaluating Measurand Alarm
standard. Limits when Using Oil Analysis to Monitor Equipment
and Oil for Fitness and Contamination
1.7 This standard does not purport to address all of the
D7874 Guide for Applying Failure Mode and Effect Analy-
safety concerns, if any, associated with its use. It is the
sis (FMEA) to In-Service Lubricant Testing
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
3. Terminology
bility of regulatory limitations prior to use.
3.1 Definitions of Terms Specific to This Standard:
1.8 This international standard was developed in accor-
3.1.1 ferrous debris concentration, n—the concentration,
dance with internationally recognized principles on standard-
expressedasmilligramsperkilogramorpercentage(percentby
ization established in the Decision on Principles for the
mass) of ferrous debris in a sample of lubricant across all
Development of International Standards, Guides and Recom-
particle size ranges of the debris, from dissolved to large
mendations issued by the World Trade Organization Technical
ferrous debris particles in the millimeter size range. Note that
Barriers to Trade (TBT) Committee.
such ferrous debris may exist in a matrix in the lubricant such
as when organically combined or as part of a steel alloy.
1
This test method is under the jurisdiction of ASTM Committee D02 on
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
2
Subcommittee D02.96.06 on Practices and Techniques for Prediction and Determi- For referenced ASTM standards, visit the ASTM website, www.astm.org, or
nation of Microscopic Wear and Wear-related Properties. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved June 1, 2017. Published July 2017. DOI: 10.1520/ Standards volume information, refer to the standard’s Document Summary page on
D8120-17. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D8120 − 17
3.1.2 sample, n—a portion of in-service oil or grease drawn susceptibility of the lubricant is determined. This magnetic
directly from the
...

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