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W1 TTT/IT Diagram


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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.

W1_TTT.jpg

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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

HELP...I'm a twenty year old trapped in the body of an old man!!!

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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.

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Thank you Jerrod!

 

~Bruce~

“All work is empty save when there is love, for work is love made visible.” Kahlil Gibran

"It is easier to fight for one's principles than to live up to them." - Alfred Adler

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