Punch Tool Steel Properties
Punch Tool Steel Properties
(OP)
I am designing a down hole punch tool.
It is required to punch through0.430" thick (OD 5.555) casing made of Super 13 Chrome 110ksi material. The punch button is 0.675" diameter.
So far the tungsten carbide buttons crack and teh last one disintergarted and wiped out the test fixture.
The compression load through the button to shear is 110,000 lbs and teh compression rating is of the order 240,000 psi.
I want to use a tool steel button heated and temprered, and to cover all basis I'm considering, D3, D6, S1, 440B and CPM M4. I struggling to determine which is the best to use of any of these grades as I only seem able to get basic data or rudimentary wear vs toughness characteristics. The button will only ever be used once and tehn replaced.
I've tried Crucible, Matweb, Globalspec for material data.
What I would like is material properties like tension, tensile yield or better still compression data for heat treated materials of D3, D6, S1 etc. Is these anything out there? I'm struggling to make a decision as to which material to go for. Can anyone point me to the data sheets I need?
Thanks
MechPhil
It is required to punch through0.430" thick (OD 5.555) casing made of Super 13 Chrome 110ksi material. The punch button is 0.675" diameter.
So far the tungsten carbide buttons crack and teh last one disintergarted and wiped out the test fixture.
The compression load through the button to shear is 110,000 lbs and teh compression rating is of the order 240,000 psi.
I want to use a tool steel button heated and temprered, and to cover all basis I'm considering, D3, D6, S1, 440B and CPM M4. I struggling to determine which is the best to use of any of these grades as I only seem able to get basic data or rudimentary wear vs toughness characteristics. The button will only ever be used once and tehn replaced.
I've tried Crucible, Matweb, Globalspec for material data.
What I would like is material properties like tension, tensile yield or better still compression data for heat treated materials of D3, D6, S1 etc. Is these anything out there? I'm struggling to make a decision as to which material to go for. Can anyone point me to the data sheets I need?
Thanks
MechPhil





RE: Punch Tool Steel Properties
RE: Punch Tool Steel Properties
For the record, I've used CPM, Carpenter, ASP, Uddeholm, etc., for tooling. My best experience thus far, with regards to technical support and recommendations, has been with Uddeholm.
Are you using straight carbide tooling? Could you use a carbide tip brazed to a softer base that would offer you the wear you need while giving you the "spring" in a softer steel punch?
RE: Punch Tool Steel Properties
Carbide has differing mixes that have similar trade-offs as steel does, ie: hard to soft/brittle to tough. Though for heavy impact shearing, carbide and PM has low limits and the material you are working with is tough. All material has limits but for impact shearing of heavy section, high alloy material, I have better experience with tradition tool steel.
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RE: Punch Tool Steel Properties
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Was told it couldnt be done, so
i went and did it!
RE: Punch Tool Steel Properties