here is an article by Ed Caffrey about making a 5160 blade that passes the JS test. http://www.caffreyknives.net/journeymanarticle.html
I am heat treating a new bade out of 5160, 8 inch blade, 1 1/2 tall, 1/4 inch spine, flat grind. Who has heat treated this steel and can you give a short explanation of what you did? I am using a two burner forge.
What type of quenchant do you use?
How long to soak in the forge?
Will you get a "hamon line" ?
What temp to temper at? how long?
thank you, I have searched this forum, but really could not seem to come up with anything before I asked,
I think 5160 needs 1525 for about 20 minutes then oil for best results. then a 400 temper. I have gotten a Harmon line using ATF as a quench. !525 is quite a bit above non magnetic, but I think you need it because of the chrome. Sure others know more than me. Jim
I wouldn't go for the ABS test heat treat for anything other than the ABS test, personally. Even many master smiths have said it's a test to see if you can make a knife in a particular way, not a test to see if you can heat treat "the best" way.
I don't use 5160, so I'm not the best for answering the question, just wanted to say do due dilligence before using a particular method.
Well, the purpose is to make a knife that's the best at passing the test. I read one J.S. or M.S. (can't remember now) who said he was told that the test knife should be considered a custom order. It's not the knife you's supposed to make every day, it's a "if you're a master, you should be able to make -this-" sort of a thing.
On the Caffrey page linked above, he also suggests that the method be used only for a test knife. Although it's not entirely clear why, here's what he wrote:
"I recommend edge quenching ONLY on a blade that will be used for something as important as the ABS JS test."
Personally, I'd go with a through quench on any steel that I wasn't specifically trying to get a pattern on.
I believe that quote is to allow a bit of a safety margin to pass the bend test. Getting to that point assumes someone is still a go.
Take care, Craig
Sorry, kinda repeated your earlier thoughts.
There are currently 1 users browsing this thread. (0 members and 1 guests)