High Temperature Shaft Material
High Temperature Shaft Material
(OP)
Does anyone have experience with shafts at High Temperatures
I am rotating a shaft at 4500 RPM inside a 1200F environment. Current shaft is A2 steel, 1.5" Diameter with a light cantilevered load.
Shafts are bending enough to create balance issues with some corrosion. I was considering switching to a 310 SS and using current design (short term solution) and maybe redesigning , increasing diameter or redesigning using hollow shafting.
Tablet
I am rotating a shaft at 4500 RPM inside a 1200F environment. Current shaft is A2 steel, 1.5" Diameter with a light cantilevered load.
Shafts are bending enough to create balance issues with some corrosion. I was considering switching to a 310 SS and using current design (short term solution) and maybe redesigning , increasing diameter or redesigning using hollow shafting.
Tablet





RE: High Temperature Shaft Material
RE: High Temperature Shaft Material
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"It's better to die standing than live your whole life on the knees" by Peter Mayle in his book A Good Year
RE: High Temperature Shaft Material
My guess is that this is no stronger than what you have now.
If you get a cold finished shaft for higher strength you will stress relive it in service.
There are a number of Ni alloys that will offer high strength at 1200F.
625 will still have over 50ski yield at that temp.
If you want more try 718 age hardened, you will be 150ksi.
But they will be stupid expensive.
More practical would be a hot-work tool steel, like H-13.
Have it tempered at 1250 or 1300 and just move on.
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Plymouth Tube
RE: High Temperature Shaft Material
RE: High Temperature Shaft Material
RE: High Temperature Shaft Material
I would not worry about lack of ductility at this condition.
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Plymouth Tube
RE: High Temperature Shaft Material
RE: High Temperature Shaft Material