Dear Pannee San,
As your question.
After change R specification to 0.4 max => Please submit result evaluation to TSK
->What is evaluation result that you would like to get? Please more details.
Hardness specification => Why change from 40 min. to 35-45 min.
->Hardness HRC 40 Min is only SNSS request to study, 35-45 HRC is our customer request (just give to us) so from now we have to think, how to do follow this specification.
In case of you would like to control HRC 40 Min, please let us know more details if the reason are reasonable we will try to negotiate with customer.
However if you didn’t start to study please start with 35-45 HRC Min (case depth 0.254mm).
Please submit result test by NSK to TSK for use design process idea
-> What is evaluation result that you would like to get? Please more details.
However SNSS also got these request to change from our customer too, so we have to think how to do and how to reply to customer with reason.
So please understand our situation.
If you have query, doubt or suggestion please let me know.