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  1. mrzoom

    AISI S7 help

    just to add to this thread. We have suspect rivets. They are coming in harder than what they should be. thanks for all the input
  2. mrzoom

    AISI S7 help

    4340 isn't that p20? if so, tried that in the past and did not last as long as the s7. We break these caps every three months.(avg.) riveter is of old design. as much as I would like to go to the new and current design politics and cost involved just ain't going to work. We have been using...
  3. mrzoom

    AISI S7 help

    Yes I'm looking for an alternative. we use this material for an end cap of a 17.5 ton cyl. they break at the threads even with a radii on the minor dia. I was thinking of changing the heat treat higher than 42rc what would you guys suggest? We put through 4500 psi some pressure spikes of...
  4. mrzoom

    AISI S7 help

    We have been using this type of material treated to 42RC for a cylinder end cap used on a manual 17.5 ton riveter. I'm having a hard time looking for material properties of this type. any input is greatly appreciated thanks,

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