Wspólnotowy Serwis Informacyjny Badan i Rozwoju - CORDIS

Report on calibration of the participating laboratories

The report describes the results of an intercomparison test of the laboratories participating in the Crevcorr-project. The Critical Crevice Temperature (CCT) of the 2205 duplex and the 254SMO super austenitic stainless steel was determined by several laboratories according to a well defined procedure. Rectungal coupons were equipped with multi-crevice-washers and exposed in a ferric chloride solution at three different temperatures, after which the resulting attack was noted. Amongst the possible criteria, it would appear that a maximum depth of attack equalling or exceeding 25 µm allows a relatively accurate determination of CCT, even though significant scatter exists between individual depth results from different laboratories and in some cases between duplicate tests.

Reported by

Shell Global Solutions International B.V.
P.O. Box 38000
1030 BN Amsterdam
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