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Title: Evaluation of replacement thread lubricants for red lead and graphite in mineral oil

Abstract

Eight commercially available thread lubricants were evaluated to determine the best replacement for Red Lead and Graphite in Mineral Oil (RLGMO). The evaluation included coefficient of friction testing, high temperature anti-seizing testing, room temperature anti-galling testing, chemical analysis for detrimental impurities, corrosion testing, off-gas testing, and a review of health and environmental factors. The coefficient of friction testing covered a wide variety of factors including stud, nut, and washer materials, sizes, manufacturing methods, surface coatings, surface finishes, applied loads, run-in cycles, and relubrication. Only one lubricant, Dow Corning Molykote P37, met all the criteria established for a replacement lubricant. It has a coefficient of friction range similar to RLGMO. Therefore, it can be substituted directly for RLGMO without changing the currently specified fastener torque values for the sizes, materials and conditions evaluated. Other lubricants did not perform as well as Molykote P37 in one or more test or evaluation categories.

Authors:
; ;
Publication Date:
Research Org.:
Westinghouse Electric Corp., Pittsburgh, PA (United States)
Sponsoring Org.:
Department of Defense, Washington, DC (United States)
OSTI Identifier:
607497
Report Number(s):
WPAD-QES-ME-1206
ON: DE98005594; TRN: 98:002080
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 30 Apr 1998
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; MATERIALS TESTING; LUBRICATING OILS; FASTENERS; POWER PLANTS; THREADED JOINTS; LUBRICATION; GRAPHITE; LEAD; ENVIRONMENTAL IMPACTS

Citation Formats

Jungling, T L, Rauth, D R, and Goldberg, D. Evaluation of replacement thread lubricants for red lead and graphite in mineral oil. United States: N. p., 1998. Web. doi:10.2172/607497.
Jungling, T L, Rauth, D R, & Goldberg, D. Evaluation of replacement thread lubricants for red lead and graphite in mineral oil. United States. https://doi.org/10.2172/607497
Jungling, T L, Rauth, D R, and Goldberg, D. 1998. "Evaluation of replacement thread lubricants for red lead and graphite in mineral oil". United States. https://doi.org/10.2172/607497. https://www.osti.gov/servlets/purl/607497.
@article{osti_607497,
title = {Evaluation of replacement thread lubricants for red lead and graphite in mineral oil},
author = {Jungling, T L and Rauth, D R and Goldberg, D},
abstractNote = {Eight commercially available thread lubricants were evaluated to determine the best replacement for Red Lead and Graphite in Mineral Oil (RLGMO). The evaluation included coefficient of friction testing, high temperature anti-seizing testing, room temperature anti-galling testing, chemical analysis for detrimental impurities, corrosion testing, off-gas testing, and a review of health and environmental factors. The coefficient of friction testing covered a wide variety of factors including stud, nut, and washer materials, sizes, manufacturing methods, surface coatings, surface finishes, applied loads, run-in cycles, and relubrication. Only one lubricant, Dow Corning Molykote P37, met all the criteria established for a replacement lubricant. It has a coefficient of friction range similar to RLGMO. Therefore, it can be substituted directly for RLGMO without changing the currently specified fastener torque values for the sizes, materials and conditions evaluated. Other lubricants did not perform as well as Molykote P37 in one or more test or evaluation categories.},
doi = {10.2172/607497},
url = {https://www.osti.gov/biblio/607497}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Apr 30 00:00:00 EDT 1998},
month = {Thu Apr 30 00:00:00 EDT 1998}
}