Hardening Steel Plates

Have you tried sitting in an old bathtub on a boat dock? I'm not sure how that helps, but they do it in the commercials all the time.

Have you considered process called klosterising performed by Bodycote

Since you seem to have ignored the advise given in response to your previous query to go to 409, continued hard-facing is about your only option. The temperature that you are running at will only undo any heat treatment hardening over time, provided this material will even respond to heat treatment.

The other overlooked factor is that your material has obviously been fatigued to failure. Without major work and expense, there will be no bringing these items back to "new", never mind an enhanced condition.

All you can do now is to continue to repair on an increasing frequency until you replace the deficient items with ones made from more durable materials.

I don't wish to be harsh, but asking the question elsewhere does not change the facts of the situation.

Thank u for your valuable reply.......r u sure that 409 can solve my difficulty. If we start using 409 hardfacing is steel required or not.

Hardfacing is used to prolong the life of the object it is applied to. Given your operating environment, I would be using it right from the start.

You know the conditions that your tools must live under better than I. I pointed out a resource that you could explore possibilities through that may address concerns not thought of or unmentioned.

Go for it and good hunting!