Larry Harley Battle Bowie

It is not a combat knife, more of a utility profile, so first I am interested in just chopping woods and the general edge retention which should be good as long as it does not microchip. After that I will see what happens when it gets banged off a few things hard and see how much it chips compared to a few other steels at similar profiles. I would agree that bainite L6 or the shock steels are the ideal materials for the heavy use knives that take big class impacts. With them, sharpening is always to remove damage, never to deal with the small amounts of wear. How does bainite compare to martensite for edge retention when slicing abrasive materials?

-Cliff
 
banite will be smaller and hold an edge better
but rc 62 will be chippy and nickey
unless u r cuttin things like pnutbutter and marshmellows
whoever is doing this??
r they going to use oil or salt???
enquireing minds want to know
damn!:) i never thought id be excited about someone else getn a knife from another maker lol
but i cant contain my self
when r u getn it??

i think the soft back and hard edge is an awful idea
they abs has folks doing blades like that to demonstrate that they have controll over the steel

BUT
a SPRING!! back w a hard edge is the way to go.
several ways to do this,
but my typing skills have already been pushed to the limits
harley
fingers bleeding possum
 
larry harley said:
whoever is doing this??
Click to expand...

Alvin Johnston.

r they going to use oil or salt???
Click to expand...

No salt bath, I assume oil quench. He has hardened test strips already and broke them to check the strength and noted it was extremely high, no surprise. The edge rolling or deforming is not going to be a problem at 66 HRC, but the question is what is going to happen when it smacks into a nail or rock or similar.

when r u getn it??
Click to expand...

Don't know, it is an evaluation piece, when he gets time he will make it.

a SPRING!! back w a hard edge is the way to go.
Click to expand...

Yeah, that is what I mean, sloppy writing, I just meant softer than the edge. No need to have annealed spines, I do not see any benefit to that, yes it can bend extremely far but is also extremely easy to bend. Spring tempers are still fairly rigid and will take impacts very well. Though it would likely to be better to go full bainite with a 66 HRC martensite edge. Can you do that without getting huge stress lines at the intersection?

To be frank though, in general for large knives, I think bainite in L6 or the shock steels are the way to go because personally I have never found wear to be an issue. I always sharpen large knives to remove impact damage and thus personally I just want a high hardness to minimize deformation while having the necessary toughness to prevent chips. This 66 HRC edge is just more of a test piece just to see what will happen. It actually hits the torsional peak of L6, 275 F temper.

Thanks for the edge retention info on bainite/martensite.

-Cliff
 
Cliff Stamp said:
Alvin Johnston.



No salt bath, I assume oil quench. He has hardened test strips already and broke them to check the strength and noted it was extremely high, no surprise. The edge rolling or deforming is not going to be a problem at 66 HRC, but the question is what is going to happen when it smacks into a nail or rock or similar.



Don't know, it is an evaluation piece, when he gets time he will make it.



Yeah, that is what I mean, sloppy writing, I just meant softer than the edge. No need to have annealed spines, I do not see any benefit to that, yes it can bend extremely far but is also extremely easy to bend. Spring tempers are still fairly rigid and will take impacts very well. Though it would likely to be better to go full bainite with a 66 HRC martensite edge. Can you do that without getting huge stress lines at the intersection?

To be frank though, in general for large knives, I think bainite in L6 or the shock steels are the way to go because personally I have never found wear to be an issue. I always sharpen large knives to remove impact damage and thus personally I just want a high hardness to minimize deformation while having the necessary toughness to prevent chips. This 66 HRC edge is just more of a test piece just to see what will happen. It actually hits the torsional peak of L6, 275 F temper.

Thanks for the edge retention info on bainite/martensite.

-Cliff
Click to expand...

cliff
i,m thinking what will happen will be BIG nicks even w L6
but i really want u to get this knife and use it:)
i wanna know
harley
 
Very possible, will see what happens, this will be a fairly thin edged blade as well, something like 0.020"/15 degrees.

-Cliff
 
Cliff Stamp said:
That is interesting (bainite roll vs martensite chip), I have a L6 blade coming with a 66 HRC edge, spring spine. I am curious to see what it will take to chip it, the resisitance to deformation should obviously be high.

-Cliff
Click to expand...
when is this knife going to be made
enquireing minds want to know
harley
 
larry harley said:
:( i wanted to hear about the knife w a rc65 ,L6 blade
harley
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You can try and send him an email (click on his username then choose send email).
I'm curious too about that knife, an edge at HRC65 must be quite fragile, unless it's thick.
 
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