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SAE J2790 (AUG2021)

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Test Method for Evaluating the Electrical Resistance of Coolant System Hose Covers

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This test method provides a standardized procedure for evaluating the electrical resistance of automotive coolant hose covers. It is known that an electrical potential exists between the engine and the radiator. Coolant hose cover conductivity has been determined to be a factor to reduce hose clamp life when vehicle build variations allow possible contact of the hose or the clamp to metal components on the radiator and engine thus completing an electrical circuit. The ensuing electrical current can undercut the clamp protective coating, leaving it vulnerable to the corrosive effects of road salts, moisture, and other environmental contaminants. SAE Recommended Practice J1684 addresses the electrochemical resistance of the tube portion of the coolant hose.

SDO SAE: SAE International
Document Number J2790
Publication Date Aug. 12, 2021
Language en - English
Page Count 7
Revision Level 202108
Supercedes
Committee
Publish Date Document Id Type View
Aug. 12, 2021 J2790_202108 Revision
Feb. 15, 2010 J2790_201002 Revision
June 15, 2007 J2790_200706 Revision