Is QQz-325-C obsolete? Shouldn't we be using B633 instead?
Ron Werkheiser - Stroudsburg, Pennsylvania, USA
Ron, you are right: QQ-Z-325 was cancelled in March of 1982. The cancellation notice noted that there is a commercial standard covering the same material, ASTM B633
. You can find the cancellation notice on the ASSIST website, at http://assist2.daps.dla.mil/quicksearch/.
Lee Gearhart metallurgist - E. Aurora, New York
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