linier guides?

hi every one,

can some one list out the diferent metals and other stuff used for linier bareings guide/rod? as in the round bar.

whats the diference between carbon steel and A2 steel for instance?

an example on the seller info list 'Hardened and Precision Ground and Polished Round Rail / shafting'

in particular about this, is A2 stainles harder/softer? which is better suited to X Y and Z axis guides.

and in for a penny in for a pound.. which bareing for which shaftings?

help please?

awww go on? any takers? i've googled till i'm blue rep rapped in the face...

On wiki you find different grades of precision. "H9" is what I was looking for last time I bought some.

Stainless steel should be hard enough but the precision of the roundness and straightness is worth looking at. and the budget is the rest.

ahahh, thank you

Quote
sungod3k
On wiki you find different grades of precision. "H9" is what I was looking for last time I bought some.

Stainless steel should be hard enough but the precision of the roundness and straightness is worth looking at. and the budget is the rest.

have you got any web sites showing prises for such steel at all?