A2 heat treat
Posted 05 May 2007 - 08:48 PM
Well i know A2 is an air harding steel but should i use forced air (if so how much IE fan Air, compressor....) or just let it cool naturally. Also should i hang it to cool or set in on something? Normally i would just try heat treating it and seeing what happens but i have been having bad luck with doing HT on know steels for the last few weeks and i don't wana mess up this knife if i can avoid it.
O ya now that brings me to temper (its a kitchen knife btw) should i do as normal and go 300 in an oven for 2 hours and draw back the spine with a torch or what?
Kk now if any one has any general advice on A2 i would be more than happy to listen.
now that i am done barraging you all with questions i will say thank you in advance and egerly await a reply or two
Thanks in advance
PS: i have no accurate method to measure temp how far past non-magnetic should i go before pulling the plug?
Posted 05 May 2007 - 09:04 PM
Posted 05 May 2007 - 10:53 PM
Here's the heat treat process I used to use when I heat treated A2. Preheat to 1450 (not really necessary for knife blade thicknesses) and then ramp up to 1775. For thicker parts, we'd hold it for a while(hours usually). For knife blade thicknesses, it doesn't require an extentsive hold, maybe 30 minutes.
I'd temper at a higher temperature than 300. According to the charts, that would leave the hardness around 62. 450 or even 500 would be better for a knife this size.
I have doubts that leaving the spine in warm sand would create a soft back, but I don't usually use A2 or D2 for knives (only dies and similar parts).
Polar Bear Forge
0 user(s) are reading this topic
0 members, 0 guests, 0 anonymous users