ASTM D5182-19

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: D5182 − 19
Standard Test Method for
Evaluating the Scuffing Load Capacity of Oils (FZG Visual
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Method)
This standard is issued under the fixed designation D5182; 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
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2.1 ASTM Standards:
1.1 This test method, the Forschungstelle für Záhnräder und
D235 Specification for Mineral Spirits (Petroleum Spirits)
Getriebebau (Research Site for Gears and Transmissions)
(Hydrocarbon Dry Cleaning Solvent)
Visual Method, commonly referred to as the FZG Visual
G40 Terminology Relating to Wear and Erosion
Method, is intended to measure the scuffing load capacity of
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2.2 DIN Standard:
oils used to lubricate hardened steel gears. Scoring, a form of
DIN 51 354 Teil 1 FZG Zahnrad Verspannungs Prüf
abrasive wear, is also included as a failure criteria in this test
maschine—Allgemeine Arbeitsgrundlagen
method. It is primarily used to assess the resistance to scuffing
of mild additive treated oils such as industrial gear oils,
3. Terminology
transmission fluids, and hydraulic fluids. High EPtype oils, for
3.1 Definitions:
example, those oils meeting the requirements ofAPI GL-4 and
3.1.1 See also Terminology G40.
GL-5, generally exceed the capacity of the test rig and,
3.1.2 abrasive wear, n—wear due to hard particles or hard
therefore, cannot be differentiated with this test method.
protuberances forced against and moving along a solid surface.
1.2 The values stated in SI units are to be regarded as
3.1.3 adhesive wear (scuffıng), n—wear due to localized
standard. No other units of measurement are included in this
bonding between contacting solid surfaces leading to material
standard. transfer between the two surfaces or loss from either surface.
3.1.4 scoring, n—asevereformofwearcharacterizedbythe
1.3 This standard does not purport to address all of the
formationofextensivegroovesandscratchesinthedirectionof
safety concerns, if any, associated with its use. It is the
sliding.
responsibility of the user of this standard to establish appro-
3.1.5 scratches, n—the result of mechanical removal or
priate safety, health, and environmental practices and deter-
displacement, or both, of material from a surface by the action
mine the applicability of regulatory limitations prior to use.
of abrasive particles or protuberances sliding across the sur-
For specific safety information, see Section 7, Section 8, 9.2,
faces.
9.3.1, and Annex A1.
1.4 This international standard was developed in accor- 3.2 Definitions of Terms Specific to This Standard:
dance with internationally recognized principles on standard- 3.2.1 polishing, n—amildformofabrasivewearresultingin
minor loss of material and typically characterized by a smooth
ization established in the Decision on Principles for the
finish and removal of all or part of the initial grinding marks.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
4. Summary of Test Method
Barriers to Trade (TBT) Committee.
4.1 An FZG Gear Test Machine is operated at constant
speed (1450 rpm) for a fixed period (21700 revolutions—
approximately 15 min) at successively increasing loads until
the failure criteria is reached; the initial oil temperature is
90 °C beginning at load stage four (see Table 1). The test gears
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This test method is under the jurisdiction of ASTM Committee D02 on
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Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Subcommittee D02.L0.11 on Tribological Properties of Industrial Fluids and contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Lubricates. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Dec. 1, 2019. Published December 2019. Originally the ASTM website.
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approved in 1991. Last previous edition approved in 2014 as D5182 – 97 (2014). Available from Beuth Verlag GmbH (DIN-- DIN Deutsches Institut fur
DOI: 10.1520/D5182-19. Normung e.V.), Burggrafenstrasse 6, 10787, Berlin, Germany.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D5182 − 19
TABLE 1 Standard Load Stages for FZG Scuffing Test
Tota
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