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  1. andrepaiva

    Alternative to Nitrided 20MnCr5

    Yes i have, but i need to be sure that it is possible to achieve the same condition with the AISI 4140. This because i'll need to manufacture a specific coil in order to properly harden the spindle after its machining. Right now i'm testing round samples with 40mm diameter to verify if they can...
  2. andrepaiva

    Alternative to Nitrided 20MnCr5

    Good day everybody, I've been assigned to a project of a spindle where i need to find a replacer to nitrided 20MnCr5. The current process: pre machining of the spindle; quenching and tempering to obtain 25~29 HRc; final machining; surface nitriding (0,3mm) to obtain >650Hv; griding. My...

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