General all-purpose survival knife. I've read heat treatment is probably the most important factor in a steel blade but since most of us have no way of assessing that, what type of steel do people look for and why?
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General all-purpose survival knife. I've read heat treatment is probably the most important factor in a steel blade but since most of us have no way of assessing that, what type of steel do people look for and why?
Thats really not true. There are ways to heat treat rather simply. It won't be as accurate as a forge can create, but it will harden the steel.
Considering that you have to anneal the steel before working it, you will have to harden it to have any decent edge holding ability.
Look online for the color charts for whichever steel you end up using. It will give you a rough idea of what glow equals what temperature. Go build yourself a nice fire with really hot coals. Let the fire die, so its just coals, bury the steel, and give the coals a lot of moving air to stoke them. You should be able to get that steel as hot as you need to.
Anneal it, shape it, temper it, sharpen and polish.
I'm going to assume you want a non stainless for an all purpose knife. I use 5160, L-6 or O-1 usually. They are tough steels and while they wont keep an edge for quite as long as some other steels, they will take lots of abuse. For a hunting knife, I prefer 1095, d-2 or 52100.
You are right up to a point about the heat treat. There is a limit though to every steel and a perfect heat treat will still leave different properties in every metal type.
If you want stainless, go with 154 CM or the Japanese version ATS-34. They have really nice edge holding properties but slightly more flexibility then the other stainless I've tested.
Personally, for a "Survival knife" I wouldn't consider any stainless steel knife or some of the "Near Stainless" either. Why? One reason, none of those will strike a spark with flint. I carry one old pocketknife always, for just one reason... it is the ONLY knife I have that will strike a spark with flint. My Carbon steel Mora's won't even strike a spark, nor my O-1 Nessmuk either. I do have one other knife that I THINK might, but it is a $400 pocketknife that I won in a raffle. So I'm not gonna' even try that one unless I have to.(It's 1095 steel IIRC)
Never tried with actual FLINT, but I've gotten lots of sparks with my moras on firesteels. I have even gotten sparks with Stainless steel.
I got sparks with my cpm154 blade, 1084 is a great steel, and the heat treat is easier than most.
If you have a good firesteel you can get sparks with glass or even aluminum. It's the Firesteel itself that provides the sparks. With Flint and steel, if my understanding is correct, it is the steel that makes the spark, not the rock.(The type of rock shaves off a tiny sliver of steel and causes it to heat up to the point of producing a spark) Because of the Chemical make-up of different steels most knife steels used today will not make a spark. I also have heard that even IF the right steel is used but the Heat treat is off it won't produce a spark.... Not sure how true that is though.....Quote:
Originally Posted by RangerXanatos
Also many people worry about oiling a knife in the field to prevent rust, but you probably produce enough on your nose and face to oil your knife daily. This may sound gross, but isn't too much different than licking your lips. That same oil is right there too.
One way to find out.....one of you two handed folks get out there and try it.
I just did a short video on several knives of some various steels that I have to see. I will download it and then post it here.
Edit: It will take about 40 minutes to upload to Youtube, and we have to take the boys to their Doc's appointment. So as soon as I get back I will try to link it in a post here. I haven't been able to so far not sure what I'm doing wrong.... but There will be a link at least.
OK Here is the video showing my attempts at getting a spark with various knives made of different steel types. The knife made from 1095 may not be true to the steel type as it was heat treated with clay, producing a hamon and a softer steel on the spine than normal.
EDIT: YAY!!! I finally figured it out!!! (How to embed a youtube video that is)
It's challenging for me to say which steel I prefer. My knives fall into the neo tribal blade category. Gosh only knows what they are made from. One of my favourites is a knife I made from a trap spring, holds a edge well although the handle is a little small.
The bottom line for knife steels is that when you use the term best - just as with pack, stove, .22, rifle, 9mm, sleeping bag, knife, and on, and on - there is a lot of subjectivity and of course use and environment play a big factor. First, know what you want the knife to do. Second, know the environment that you will be using it. Third, substitute the word good for best. You'll be much happier.
If you are unable to get a spark using o-1 then its either the carbon has been burned out during heat treat or the technique being used. any piece of flint or quartz sparks well off my o-1 blades. Thanks for the vid.
Well my O-1 Nessmuk was professionally heat treated by a company that does nothing BUT heat treat. It tested at 59 RC. The vid was my pleasure....Quote:
Originally Posted by Erratus Animus
is there a coating on the blade? O-1 is high carbon and it is the steel that burns when scraped off. My blades are the same 59RC.
I suspect that the notion that you can not strike sparks on stainless blades is more a product of the hardness to which those blades are often tempered. almost every stainless blade i've ever used was inexcusably soft, and we know that this is not truly necessary.
a large part of the reason for my preference of simple carbon steels is that heat treatment of those blades is within my ability and experience in my own shop. I've slowly gained a great respect for some of the high end stainless steels.
Well What do ya' know? After reading your post, I took a "Rust Eraser" to the spine and tried it again..... It worked, but still not as well as the little old Pocketknife in the video. Must have been the patina on it is all I can figure.Quote:
Originally Posted by Erratus Animus
Sweet! I am glad it is working better for ya :punk: