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International Lubricant Evaluation
ACEA* Lubricant Evaluation

Corrosion Evaluation (ASTM D6594)
 

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  image of one of SwRI's systems for trend analysis of a variety of lubricants extracted from many different types of fleets
 

SwRI has developed and proven a system for trend analysis of a variety of lubricants extracted from many different types of fleets.

ASTM D6594 is a corrosion laboratory test method offered by Southwest Research Institute (SwRI) for use in testing diesel engine lubricants to determine their tendency to corrode various metals, specifically alloys of lead and copper, which are commonly used in cam followers and bearings.



ACEA 2008 Specifications

The corrosion test for heavy-duty diesel engines is part of ACEA Specifications:

  • E2-96 (Issue 4)

  • E4-08

  • E6-08

  • E7-08

ASTM D 6594 Test Parameters

Four metal coupons of copper, lead, tin, and phosphor bronze are immersed in a measured amount of engine oil. The oil, at an elevated temperature of 135°C, is blown with air.

 

  image of ASTM D 6594 test at SwRI, where four metal coupons of copper, lead, tin, and phosphor bronze are immersed in a measured amount of engine oil   image of the end of the ASTM D 6594 test where the coupons and the stressed oil are examined to detect corrosion
 

Four metal coupons of copper, lead, tin, and phosphor bronze are immersed in a measured amount of engine oil.

  

At the end of the ASTM D 6594 test, the coupons and the stressed oil are examined to detect corrosion.


Pass/Fail Criteria

At the end of the test, the coupons and the stressed oil are examined to detect corrosion. Pass limit for for E7-08 is ≤ 100 ppm lead and pass limits for E9-08 are ≤ 20 ppm for copper and a copper specimin rating no worse than 3.
 

*Association des Constructeurs Européens d'Automobiles/European Automobile Manufacturers Association.

 

For more information about corrosion evaluation (ASTM D6594), or how you can contract with SwRI, please contact Becky Grinfield at bgrinfield@swri.org or (210) 522-3652.

 

corrtest.swri.org

 

Contact Information

Becky Grinfield

Corrosion Evaluation(ASTM D6594)

(210) 522-3652

bgrinfield@swri.org

corrtest.swri.org

Related Terminology

ASTM D6594

corrosion evaluation

ACEA 2008 specifications

ACEA lubricant test

HTCBT

lubricant analysis

diesel engine

standardized lubricant
testing
 

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Southwest Research Institute® (SwRI®), headquartered in San Antonio, Texas, is a multidisciplinary, independent, nonprofit, applied engineering and physical sciences research and development organization with 11 technical divisions.

June 16, 2011