2005 Edition, September 1, 2005
Test Method for Evaluating the Electrochemical Resistance of Coolant System Hoses and Materials
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Description / Abstract:
This test method provides a standardized procedure for evaluating the
electrochemical resistance of
automotive coolant hose and materials. Electrochemical degradation has
been determined to be a
major cause of EPDM coolant system hose failures. The test method
consists of a procedure which
induces voltage to a test specimen while it is exposed to a
water/coolant solution. Method #1,
referred to as a "Brabolyzer" test, is a whole hose test. Method #2,
referred to as a "U" tube
test, uses cured plate samples or plates prepared from tube material
removed from hose (Method No.
2 is intended as a screening test only). Any test parameters other
than those specified in this SAE
Recommended Practice, are to be agreed to by the tester and the