Machining 4140

[Cross Slide]

(07-04-2020, 10:40 AM)EdK Wrote:

(07-04-2020, 09:28 AM)Cross Slide Wrote: I do have some carbide insert tooling. I really haven’t used any of them yet. I mainly use HSS.
My lathe is a smaller lathe. It’s a Craftex CX701 12x24”. It’s the Canadian version of the Precision Matthews PM-1127VF-LB. I’m not sure how deep of a cut I can actually take with a lathe this size.

On my invoice it says I purchased 5-1/2” HR Round HTSR 4140 R/L
I don’t know if the HTSR will give any more info.
Also. What does the R/L stand for?

Trevor

Hopefully the "HR" doesn't stand for hardened.  

Ed

I’m pretty sure the HR is Hot Roll. It definitely has the Hot Roll Steel look to it.