W1 TTT/IT Diagram

[Jerrod Miller]

So I got a request for a W1 TTT diagram if I have one since they couldn't find one (a quick search of the forum didn't turn one up for me either). I do have one and I figured more people than the original requester may want it, so here it is.

[R.H.Graham]

Awesome, now myncollection is finally complete!

 

:0)

[Doug Lester]

The problem with W series, and even a lot of the other tool steels, is that the carbon content can have quite a range. That is ok for a hypereuticoid batch, maybe, though the carbon content can to all the way up to 1.4% if I remember right, however, it can also go down to 0.6% which would give you a totally different IT diagram. That not to say that anyone stocks a hypoeuticoid W1 or 2 steel but it's possible. You just have to know the carbon content of the batch of steel that you are dealing with and then try to fine a IT diagram calculator (one of these boards has one) and get a diagram for the steel that you are dealing with.

 

Doug

[Jerrod Miller]

Very true Doug (and yes 0.6-1.4% C). Please note (everyone) that the chemistry for these diagrams are listed on the diagrams (2 different batches of the 2 charts). I have run chemistries on a couple W1 samples and they were both very close to these, but that is not going to be the case for ALL W1. One can look at a diagram like this and compare it to misc. 10XX series diagrams and get a rough idea of how this chart may change with various C contents.

[B. Norris]

Thank you Jerrod!

 

~Bruce~