- Joined
- Jan 2, 2018
- Messages
- 597
I know the rods by thompson for linear bearings are ground and polished but I'm sure other rods may be also.You can't really count on them being a certain grade of steel unless there are maker marks.Ok. I also have 3 pces of steel that is in a cardboard tube. I think it was ground and polished. Is that isually a certain grade if steel for that?
There are a lot of applications which only need the strength of mild steel( 1018) so you could use any of the unknown steel you have-as long as it isn't so hard that it is difficult to machine-anyway that is what I do.The other issue I have found with unknown steel rods is that frequently diameters under 1" have bends,that is they are not straight.