ProCut, new steel, it’s a good one 👍

[DevinT]

I've got 4 bars ordered a couple days ago...

Not super how close to 15n20 this will be?

I like 15n20, 8670, Wolfram....
It will be interesting how it compares?

At 1625’ the toughness numbers are very close.

Pro cut has a much broader austenitizing range. 15n20 has a very narrow heat treating range.

Finer grain, better edge holding. There’s a lot to look forward to.

Hoss

 

[Cypress Creek Knives]

Just finished up a matching set in ProCut for myself. I'm looking forward to testing this steel out. It looks very promising!

1475* F austenituze with a 400*F temper

 

[Larrin]

We have put together a datasheet with the data we have thus far: https://cdn.shopify.com/s/files/1/0220/0308/9472/files/Pops_Procut_datasheet.pdf

 

[Stuart Davenport Knives]

Looking at the chart at the very bottom, left hand corner, after normalizing and annealing vs as received condition.

Question: Why the recommended temp of 1550°F when it looks like 1475°F gives 66HRC+, as does the normalized annealed condition (which the chart shows 66HRC+ at quite low hardening temps after norm/anneal)

Is it because the nickel requires higher heat to be put into solution to offer its toughness benefit? If that's the case, why is 15n20 recommended to be hardened at 1475°F intead of higher?

Thanks for the help!

 

[Larrin]

Looking at the chart at the very bottom, left hand corner, after normalizing and annealing vs as received condition.

Question: Why the recommended temp of 1550°F when it looks like 1475°F gives 66HRC+, as does the normalized annealed condition (which the chart shows 66HRC+ at quite low hardening temps after norm/anneal)

Is it because the nickel requires higher heat to be put into solution to offer its toughness benefit? If that's the case, why is 15n20 recommended to be hardened at 1475°F intead of higher?

Thanks for the help!

If you look at the toughness chart next to it you will see that the toughness is lower at 1475F than it is at 1500-1575F. That temperature range is roughly similar but I have a single temperature so no one asks where in the range they should use. Nickel is not the limiting factor since it isn’t found in significant amounts in the carbides.