Need helping choosing metal
Need helping choosing metal
(OP)
I am currently on a project requiring building some pipe bending shoes and rollers that will come in contact with very hot metal. The workpiece blank (low carbon steel) will be heated to about 1600 deg f and then sent thru the bender. It will be in contact with the shoes/rollers for quite some time for the bending process.
I'm thinking 4340, does anyone know what type of steel is generally used for this type of application?
Thanks in advance!
I'm thinking 4340, does anyone know what type of steel is generally used for this type of application?
Thanks in advance!





RE: Need helping choosing metal
RE: Need helping choosing metal
RE: Need helping choosing metal
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Plymouth Tube
RE: Need helping choosing metal
What does this mean, in terms of seconds, minutes, hours? The hotwork steels are not altogether impervious to the effects of heat. There are limitations. H13 is certainly one of the most commonly used general purpose hot work alloys.
It is better to have enough ideas for some of them to be wrong, than to be always right by having no ideas at all.
RE: Need helping choosing metal
RE: Need helping choosing metal
It is better to have enough ideas for some of them to be wrong, than to be always right by having no ideas at all.
RE: Need helping choosing metal
There are various other hot work tool steels used in that service.
Hardness retention and resistance to heat checking (cracking) will be the drivers.
Alloys like H24 or H26 may have an advantage in the long run over H11 or H13.
You also do need to consider coatings, a flame spray Mo or ceramic coating will greatly help protect from surface damage.
These coatings could be striped and reapplied at a regular intervals (swapping out with a second set of tooling).
This would greatly extend tooling life.
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Plymouth Tube
RE: Need helping choosing metal
Can you tell me more about the Mo coating process? Is it expensive? It will also have to handle hefty amounts of pressure and friction.