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Old July 18th, 2008, 05:44 AM
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paintballmagnet paintballmagnet is offline
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Default Temps and times heat treating A-2 steel?

I've got a 18"x2" piece of A-2 steel that I'd like to turn into a tree limb chopper. Anyone have any idea where I can find a chart showing how to heat treat and temper A-2 tool steel, one that tells how long at what temps to vary Rockwell hardness? I have access to a computerized oven but no idea what to program into it. Thanks!
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Old July 22nd, 2008, 12:07 AM
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Default Re: Temps and times heat treating A-2 steel?

Here is a couple of links.Might help.Might Not

Here is the charts you requested these will help.

Last edited by guncrazy; July 22nd, 2008 at 12:09 AM.
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Old April 27th, 2009, 11:36 AM
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Bossman Bossman is offline
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Default Re: Temps and times heat treating A-2 steel?

Hey PBM, send me that oven and I`ll figger it out for ya, might take me a year or so but I`ll send it back with complete instructions.
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Old April 30th, 2009, 09:28 PM
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Default Re: Temps and times heat treating A-2 steel?

Good to "see" you post Bossman, I took a break for awhile also. How ya been?
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Old June 1st, 2010, 10:58 AM
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Default Re: Temps and times heat treating A-2 steel?

PBM, better late than never...
Heat treating A2 can be acomplished in this method. Heat the peice until it becomes non magnetic. There will come a point where a magnet will not have any attraction to it whatsoever, around 1775deg f. Hold this temperature for 1 hour per inch of thickness. Place the part in front of a fan moving lots of air over it to cool. Temper at 550. When it comes to tempering, do it in a bath of salt water, it's easy to control the temperature accurately. You add salt to water and heat it, the more salt the higher the temp it will go without boiling. 550 can be reached with about 10lbs of salt per gallon, plain rock salt works well. Let it soak in there until uniform heat is reached, remove, wash off the salt water and you'll have a part in the R55-60 range and very tough. A2's known for it's chromium, it imparts toughness to the steel and at better than 5%, it's one of the toughest there is. Impact sockets of good quality have chromium at these levels for that exact purpose, toughness.
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