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International Lubricant Evaluation
ACEA* Engine Evaluation

Corrosion Evaluation (ASTM D 6594)
 

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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
 

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

Southwest Research Institute (SwRI) offers the corrosion laboratory test method, ASTM D 6594, which tests diesel engine lubricants to determine their tendency to corrode various metals, specifically alloys of lead and copper commonly used in cam followers and bearings.



ACEA 2004 Specifications

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

  • E2-96 (Issue 5)

  • E4-99 (Issue 3)

  • E6-04

  • E7-04

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 limits are £100 ppm (parts per million) for E7-04.
 

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

 

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

Contact Information

Becky Grinfield

Corrosion Evaluation(ASTM D 6594)

(210) 522-3652

bgrinfield@swri.org

Related Terminology

ASTM D 6594

ACEA laboratory tests

corrosion test

lubricant analysis

diesel engine

lubricants tendency
to corrode metals

corrosion detection

ACEA 2004 specifications

standardized lubricant
testing

engine lubricants

Association des
Constructeurs
Européens
d'Automobiles

European Automobile
Manufacturers
Association
 

| Fuels and Lubricants Technology Department | Fuels and Lubricants Research Division | SwRI Home |

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.

September 30, 2008