HT for D-2 steel?

TheDandyLion

TheDandyLion

Joined
Mar 27, 2013
Messages
764
I'll start out by saying I'm not looking for some long winded explanation on whats happening to the steel I would just like to know what I should do. I do have some small time knife making experience tempering O-1 and 1095/75 but never D-2. I have heard its a different steel to work with so I want to know if theres anything I need to watch out for any special precautions I should take? How should I quench It? How hot does It need to be? How long? Thank you for answering my many questions. By the way I want it between 56-60RC.

Thanks again,
~Jake
 
TheDandyLion said:
I'll start out by saying I'm not looking for some long winded explanation on whats happening to the steel I would just like to know what I should do. I do have some small time knife making experience tempering O-1 and 1095/75 but never D-2. I have heard its a different steel to work with so I want to know if theres anything I need to watch out for any special precautions I should take? How should I quench It? How hot does It need to be? How long? Thank you for answering my many questions. By the way I want it between 56-60RC.

Thanks again,
~Jake
Click to expand...

Sir, I would not waste my time trying to help someone who won't help themselves but prefers to be spoon fed.

Use the search engine.
 
Last edited:
Hardening

Preheat: 1100/1200F (595/650C), equalize, 1400/1450F (769/790C), equalize.

High Heat: 1825/1875F (995/1025C), hold 30/45 minutes at temperature

Quench: Air or positive pressure vacuum. Cool to 150F(65C).

Temper: 400/1000F(205/540C), hold one hour per inch of thickness (two hours minimum) air cool to room temperature. Temper twice.

Cryogenic Treating: Refrigeration treatments may improve long term dimensional stability by transformation of retained austenite. Refrigeration treatments should generally be performed after the first temper, and must be followed by a temper.

D2 is made by crucible, here is the link with more info. seems like crucible shows exactly how to temper all of their metals. there is also a chart on what temper degrees give what hardness.

http://www.crucibleservice.com/eselector/prodbyapp/plastics/airdi150p.html
 
Assuming you do not have a heat treat oven and cryo equipment (if you did you'd probably know how to find HT specs by searching or asking the steel supplier for the info) When you send it out for heat treat tell them what hardness you want.
 
ernestrome said:
Sir, I would not waste my time trying to help someone who won't help themselves but prefers to be spoon fed.

Use the search engine.
Click to expand...
Don't think I haven't because I have spent a good portion of today searching online. The reason I posted this is because most of what I found was very unclar and conflicting from other sources so I decided to come here where I can talk with professional level craftsman (or at least experienced hobbyists) about their experiences and advice.
 
ernestrome said:
Sir, I would not waste my time trying to help someone who won't help themselves but prefers to be spoon fed.

Use the search engine.
Click to expand...

I don't know why you are upset at this question, most newbie questions could be researched, but it usually confuses them rather than helping. A discussion is helpful.
 
ernestrome said:
Sir, I would not waste my time trying to help someone who won't help themselves but prefers to be spoon fed.

Use the search engine.
Click to expand...

This is funny, since you did waste your time explaining why you were not going to help him. Kind of funny. :)
 
I use crucible's recipe and temper guidelines and it comes out spot on every time .
 
Here is my recipe for D2

place in 309 stainless foil packet
heat to 1500f and hold 20 minutes
heat to 1850 and hold for 40 minutes
remove and clamp between large cooled aluminum plated
remove from foil packet while still over 4-500 and check for straight
When at ambient temp, I then place in a bucket of kerosene with some chunks of dry ice for -100f chill nfor 30 min.
Temper in oven at 425f for 2 hours then back to dry ice slurry for 30 min
2nd temper 425 -450 for 61 t0 62 RC
 
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