Could you help me？ thanks
effective case depth ：effective case depth isthe perpendicular distance between the white layer/steel interface and the point where the hardness falls below 50 HRC or 10 HRC less than the required hardness for tow consecutive readings。what’s this meaning ?
TheASTM of USA nitride effective case depth defination?
now ,the qustion is the company require us nitride effective case depth hardness is 45-50HRC, iswe reach the 35-40HRC it ok that ?
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