SAE J2636:2019 pdf free

SAE J2636:2019 pdf free.Corrosion Test Master Establishment
The laboratory corrosion testing of wheels and wheel trim for automotive applications does not have a calibration method that can isolate test equipment, process, personnel, gauging, procedures, and materials from the test results. This document provides a guideline for the establishment of a laboratory master test sample to be utilized to confirm the consistency of the test equipment and process to reproduce consistent results. The masters can also provide a basis to correlate the test results between different laboratories, different test equipment, and different laboratory personnel by analysis of the quantitative results of the testing. The use of masters also provides a basis for process variation to be evaluated within a calibrated laboratory .The existence of an approved master may also be an important tool in trouble shooting for the continuous improvement process for test development. Masters tested in conjunction with test sample pieces may provide a rationale for invalidating test results if the results are inconsistent with an established performance level for the master.
The establishment of a test master sample will vary depending upon the component design, expected or intended corrosion performance objective, and the capability of the test measurement systems. A specific procedure for each laboratory test method is required and a general procedure is not practical to cover the specific issues unique to the individual products and processes. The correlation procedure is provided as follows:This procedure is intended to provide a framework for a laboratory to establish a master lot and qualify the master lot for use in establishing laboratory to laboratory correlation.
The test procedures will vary dependant on the specific test for which this method is applied. The intent is that the procedure should address the items listed in the outlined documents and a record that these items have been assessed is documented. Should the procedure not be capable of achieving acceptable correlation with a laboratory then these documents provide a framework for establishing an improvement plan.SAE J2636 pdf free download.