Bush Material Question (En31)

Bush material? One part village idiot, one part megalomaniac...

Sorry.

Ad-hominem doesn't become you. Apology accepted.

(it is lightly amusing)

Let's try to keep the CR4 dialog slightly above the Rosie Odonnell level.

Now now Ken, haven't you heard that a pre requisite of becoming an engineer is that you are not allowed to have a sense of humour! I did rather enjoy the comment though (please don't tell my chief). I seem to remeber a comment made in an official report by an officer concerning one of his subordinates during WW 2 and I quote.."This man is depriving a village of an idiot!"

Maybe English is not your primary language. I think you may mean BRUSH material not BUSH material. There is a lot of difference!

Hi milky

En31 grade is used for making Bushes in jigs.

En353 and 20MnCr5 are case hardening steels.Definitley these two will give a better life.

Lubrication and surface roughness are also matters a lot.

Robert

Hi jk,

I feel that you should use OHNS ie OIL HARDENED NON SHRINKABLE STEEL.

I have experienced better life and better wear resistance and better surface finish with this material. This is through hardening steel.

Hope you will find better results.

Limbkar

YOU SHOULD STINK to the original bush material

as a harder material will wear the shaft instead of the bush

so dont be the village idiot

Hi JK,

Please tell what is the hardness of the bush and where exactly it is used, mention its size like Outer / Inner Diameter & length & unit of measurement.

If you cannot mention where it is used, just simulate it to a nearest example and reply, so that i can suggest you the right material.

With regards

Yatish

If you had described your application with a little more background--- saying "Bushes for use in Stamping Dies,in Closed-Dies for forging,in Jigs" etc., comment like #2,#3 etc could have been avoided.

If these are indeed your applications, Tool and Die Steel Tables tell all. Or in British Standards(EN Steels)

If you wanted Bearing bushes--you needed Bronzes, Sintered or alloyed. Certainly not heat treatable Hi C, Hi Cr steels.

Yes you are right sir, We can use HcHcr steel for bushes.

Sreedhar you got me totally confused-YES or NO?