See Alistair at Ashurst engineering, Bis 80would be the minimum hardness you want, preferably AR 400, or Brinel 400 or ideally 500 would last for ever.
See Alistair at Ashurst engineering, Bis 80would be the minimum hardness you want, preferably AR 400, or Brinel 400 or ideally 500 would last for ever.
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