Regarding 4130CD Chrome Moly Steel

[extropic]

What does the "CD" mean/stand for?

I asked Google, but came up dry.

 

[darkzero]

Cold drawn?

 

[extropic]

Cold drawn?

Duhh! I hope it's not that simple.

 

[darkzero]

I can't think of what else it would stand for? I believe Cold Drawn is described for buying tubing? I rarely buy steel tubing so I'm more used to CR, HR, PH, N.

 

[DavidR8]

I see all kinds of references to 4130CD but nothing about what the CD stands for.

 

[DavidR8]

I can't think of what else it would stand for? I believe Cold Drawn is described for buying tubing? I rarely buy steel tubing so I'm more used to CR, HR, PH, N.

I'll bite... what's PH?

 

[francist]

Pre-Hard


Oops, sorry didn’t mean to muscle in there…

 

[darkzero]

I'll bite... what's PH?

PreHardened. I'm not sure if that's an industry standard designation though. Could have been just the supplier I bought from.

 

[extropic]

The issue arose from looking at some bar stock, but it would be a lie if I said it was the bar vs tube that precipitated the question. I'd like to think that CR would have rung a bell, however CD didn't get through to me at all. Like I said earlier . . . Duhh! (head slap)

 

[homebrewed]

Cold drawn?

I've seen tubing described as DOM, Drawn Over Mandrel (as opposed to welded), but not CD. And the DOM tubing I've purchased looks more like hot-rolled rather than cold-rolled.