Tempering and HRC charts

L

Londinium Armoury

Joined
Jun 2, 2020
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Right now I am looking specifically for a graph or chart showing the complete range of HRC and what temp to temper O1 tool steel. I lost my old folder with all of my data sheets that was on my old laptop. Is there any website, PDF or book that has tempering charts all in a single place? My old folder was full of random charts web pages etc taken from random sources over the years and I lost it all.
Would be nice if I could find a comprehensive body of charts listing many steel types and their full range of HRC and tempering degrees all in one place. It's not just O1 that's just what I need right now, but I know in the future I will need this info for lots of other steels. I'm back to looking up individual data sheets on google.
I have a new line of thin slicers I'm making from O1, I'm tempering them at 150c, having very good results at low edge angles, on thin 1.5mm stock. I thought I was tempering them at around 62+ but after putting these things on whetstones I'm thinking they are quite a bit harder than 62 HRC.

Here is one of the O1 blades tempered at 150c.
Precision slicer
https://imgur.com/a/WXnFnEy
 
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There isn't just one place for everything, especially since many steels are proprietary to a given steel company. The ASM Heat Treater's Guide is a good book for standard grades though it is relatively expensive. Their ASM Heat Treater's Guide app is free but it is missing the charts including tempering vs hardness. Otherwise you look at the steel company datasheets such as from Crucible, Carpenter, Bohler, and Uddeholm. For example, here are a few for O1:
knifesteelnerds.com

O1 Steel - History, Properties, and How to Heat Treat - Knife Steel Nerds

O1 steel has been used in knives for decades. I provide the story of where the steel came from, its properties, and why it has been popular in knives.
knifesteelnerds.com knifesteelnerds.com
 
Larrin said:
There isn't just one place for everything, especially since many steels are proprietary to a given steel company. The ASM Heat Treater's Guide is a good book for standard grades though it is relatively expensive. Their ASM Heat Treater's Guide app is free but it is missing the charts including tempering vs hardness. Otherwise you look at the steel company datasheets such as from Crucible, Carpenter, Bohler, and Uddeholm. For example, here are a few for O1:
knifesteelnerds.com

O1 Steel - History, Properties, and How to Heat Treat - Knife Steel Nerds

O1 steel has been used in knives for decades. I provide the story of where the steel came from, its properties, and why it has been popular in knives.
knifesteelnerds.com knifesteelnerds.com
Click to expand...
Thanks for the links, looks like I have to go collect data sheets like they are pokemon again.
I'll check that book out.
 
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