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Which material would be most suitable for a shaft 3/4" diameter with a 7/16-14 thread at one end? The shaft has two bearing areas riding in SAE 660 bronze bushings (2000 rpm max) I believe all three steels are available as TGP (turned, ground, and polished) which would eliminate one grinding step. I have turned and threaded stressproof and certainly turned 4140HT and possibly even threaded it. I have no experience with EDT 150 - how does it machine compared to the other two?
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ETD150. Higher strength than Stressproof, better machinability than 4140HT
http://www.niagaralasalle.com/pdf/etd150casestudies.pdfIt's all mind over matter.
If you don't mind, it don't matter. -
Last we spoke Bob, you were locked up in your garage.
Looks like you still are. Are you going to be threading it on the Hendey?
-DoozerD
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The choice of material would depend on what the shaft is being used for. At least it would be for me.
Since you're going to be running bronze bearings on it I would suggest turn ground and polished with the alloy of your choice.
JL.....
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