80CRV2 heat treat part 1

"TESTING"
results
far as heat treating it's really easy to get this steel hard just go 1580° for 5 minutes quench it in a medium or fast oil,, so that's not an issue but the tempering is so here's tempering
pretty sure 370 gives a spot on kitchen blade a very small carving blade 380 small bushcrafter 390 temper on a bigger blade like 7" or so & 400 temper on choppers 420
steel was from alpha knife Supply and Pop's steel knife Supply chopping nails and bend and Brake test

[@rcflightseeker3488]

Every knife maker should go through this process to understand how shortcuts can make or break a good knife. I've gone through this with 1095, 1084, 80crv2 and Damascus made with 1095-15n20 and 80crv2-15n20. That's all the metals I've used so far. I still need to do this with other metals though.

[@garetkonigsfeld2]

I made a kitchen BBQ knife and it warped in the quinch. I tempered at 400 twice got a ROC of 60 and the steel was extremely flexible and tough so tough after flexing and beating with a hammer I had to get a torch to heat the spine in order to straighten the blade out. I was very happy with the steel. Thanks for sharing.

[@AaronJohnson1979]

And one of the best things about the steel is it’s the same every time you get it and it seems to be the same no matter what company you buy it from very very consistent steel

[@MrRon2k]

This was a lot of work. Thank you for sharing. Very tolerant steel to a wide range of heating and tempering scenarios. Seems like 400-410 is the sweet spot. Where exactly is the probe for the thermocoupler placed inside your forge?

[@AaronJohnson1979]

I drilled a hole in some fire brick, and the temperature probe goes inside a ceramic sleeve to protect it. Then I’ll put it inside a pipe which shares the same space as the knife.

[@teeeff5179]

just starting with blade making and bought a batch of this steel, very much needed info like this. many thanks for recording your testing efforts.

[@kevinAuman1]

You ever think that you had created a weak spot when you added those notches in them? Because from what i seen they broke right at the notches

[@AaronJohnson1979]

Most of the test pieces had a notch on the top which wouldn’t have affected it, but there was a few that had notches on the side and yes, as you already know, they can become a stress fracture.

[@heirloomseeder]

I saw notches where you said no notches, blah blah blah. Pretty sure you screwed up your test, Bud.... Thanks for all the work you put in to show us, however.

[@AaronJohnson1979]

Well i did my best lol But this type of process of testing does work. It’s a good way for trial and error. Eliminating what works in your shop and what doesn’t can’t just read a book or watch a KZbin video and know how to do it. Especially without a heat oven. What works in your garage will not work in someone else’s. This is just a process of how to. Narrow something down.

[@heirloomseeder]

I want to say to you and all viewers...no disrespect was intended, just an observation in viewing vid. Thanks again, I know a lot of work goes into production.@@AaronJohnson1979

[@AaronJohnson1979]

@@heirloomseeder hey it’s all good, I don’t mind constructive criticism at all

[@ghostwalkerairsofttech1947]

fact is..,.if someone is using a knife as a pry bar then they deserve to have their knife break...right tool for the right job! Im impressed with the steel!!

[@AaronJohnson1979]

It’s some tough stuff for sure

[@ghostwalkerairsofttech1947]

@@AaronJohnson1979 I'm being contracted to make knives for a company and pretty sure thus far this is the steel I will be using..I was going to go with d2, but this has changed my mind.

[@AaronJohnson1979]

@@ghostwalkerairsofttech1947 wow That’s awesome I wish you luck Knife making is a very fun hobby But a very dirty hard job

[@ghostwalkerairsofttech1947]

@@AaronJohnson1979 Oh im well aware I had my hat in the ring many years ago as a full time maker...it wasnt a hobby anymore. Thus being a 1 man shop it ceased to be fun dealing with people that didnt understand the words custom handmade, which takes time and being that we live in the amazon world of instant gratification people have no patience to wait anymore. I used to tell a story about when Japanese Samurai contracted a smith to build a sword for them it could literally take up to 2 years for that sword to be completed. at any rate, it has been a dream for me to be able to get back into it again just on a much more manageable smaller scale. i used to make over 50 different products...only having 1 or 2 will be much more manageable!!

[@bobwhelk2117]

Who the fuk was the camera person?

[@TomofAllTrades]

Good fairly low tech process. It was worth the experiment. Thanks for sharing.

[@AaronJohnson1979]

Thank you, I dream of the day I get a heat treat oven.

[@kywildcats6476]

.? .n

[@rmkunce6883]

80crv2 is good knife making steel , very flexible in heat treat and temping...good video 👍👍liked it

[@AaronJohnson1979]

Thank you very much

[@jasmineirwin7166]

I been having similar problems thinking my edge was too soft. I usually only do 1 one hour long temper cycle. Maybe I should do two.

[@leostraker3494]

thank you! very helpful

[@heirloomseeder]

Did you temper for 2 hours x 2 cycles or one cycle??

[@AaronJohnson1979]

2hr x2 always And if you can Cryo treat it.

[@jasmineirwin7166]

That last knife seemed really good. Maybe try just doing an edge quench might get you the flex you want.

[@adamellis3599]

Try 2 cycles at 450 for 1 hour each cycle

[@AreteFinancialGroup]

What type of thermometer are you using?

[@AaronJohnson1979]

I'm using a k-type thermocouple for the forge any type of k-type thermocouple will work just got to get that boot that goes over the sensor. Far as the toaster oven I'm using just plain old cooking probe something you would stick into a turkey anything like that will work

[@AreteFinancialGroup]

@@AaronJohnson1979 ok awesome. Thanks for all the info in the video. Really appreciate it 👍🏼

[@tarts9767]

👍👍👍😊