We are performing a ASTM G48 test Method A for a welding qualification/ welders approval on duplex steel. The client request is a 24 hour test and requiring a test result by weight loss of 4g/m2 or better. The ASTM G48 Practice A test we normally perform is a 72 hour test not 24 hrs. The standard is not precise on time but suggests 72 hours. However, the criteria for evaluation to ASTM G48 Method A is less than 1 g/m2 (minimum)for the 72 hour test and not 4 g/m2 weight loss as specified in the request. The test specification in the ASTM G48 standard is a minimum requirement and not something that the client can change. Is this an acceptable request for the client to shorten the test duration by x3 and increase the weight loss allowable by x4 for a welding qualification/ welders approval?
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