This document specifies the terms and definitions of friction material pH value test methods, instruments, equipment and materials, sample preparation, test procedures, result expression, and test reports. This document is applicable to the determination of pH value of automotive brake linings and automotive clutch facings. Other types of friction materials can be used as a reference.
T/CSTM 00332-2022 history
2022T/CSTM 00332-2022 Test method for pH value of friction materials