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Old 03-31-2020, 10:48 PM
jimmontg jimmontg is offline
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Join Date: Jan 2016
Location: Now live in Las Cruces NM.
Posts: 1,345
You have a slow oven?

Then go from room temp to 1570 as fast as your oven works, but you cannot spend 30 minutes above 1450 as that will cause grain growth even with the vanadium. Vanadium at 0.20% restricts grain growth, but not for much longer than 30 minutes above trans formative heat. Aim for whatever takes 30 minutes from 1420 to 1570 then quench. Note the temperature at 30 minutes.

You might be better off with O1 tool steel at 15 mins at 1475, then quench in oil from 120 to 130. What kind of oven do you have?
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