5160 vs. L6 vs. S7 Tool Steel

flatgrinder

flatgrinder

Joined
Dec 20, 2005
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Which one is tougher?

Which one takes a better edge?

Which one cuts longer?

The intended application is a 7 to 8 inch camp knife. I'm kinda leaning towards 5160 (differentialli quenched) as this is what a lot of people have used in the past. However, I'm curious as to L6 and S7's properties.

Which one would you choose and why? Any info would be greatly appreciated.

Thanks! :thumbup:
 
On paper, S7 is the toughest, then probably L6. I've never seen impact test data for 5160, so I can only make an uneducated guess.
Judging by carbon content alone, I would guess the L6 would cut longer.
 
S5 is both harder and tougher than S7, but it is an oil hardening steel and you can usually only find it in round bar. You might find a source for 9260 flat stock, which is S5 with less alloy. 5160, L6, and S5 can all easily reach 60 Rc, but that's pushing it for S7. I would be as interested as anyone else in edge retention comparisons between 5160, L6, and others. The bottom line is, though, use the one that is easiest to get or work with, because all have successfully been used in choppers.
 
I agree that either 5160 or L-6 will work for you....I use mostly 5160 on everthing,but if I had a source for L-6 as available as my 5160 I would it allot more also.I have never used S7 so I cannot compare it to the others.
Bruce
 
Larrin said:
S5 is both harder and tougher than S7, but it is an oil hardening steel and you can usually only find it in round bar. You might find a source for 9260 flat stock, which is S5 with less alloy. 5160, L6, and S5 can all easily reach 60 Rc, but that's pushing it for S7. I would be as interested as anyone else in edge retention comparisons between 5160, L6, and others. The bottom line is, though, use the one that is easiest to get or work with, because all have successfully been used in choppers.
Click to expand...
The 1 X 1/4 "5160' that Admiral sells is actually 9260 in that size only.
 
Check out the 8670M form Admirals(listed as L6 on the web page, but they have it correct on the PDF you can order from) It will make a great chopper, and does not have the air hardening troubles that L6 can. Much easier to soften for grinding and drilling.

Ken Nelson
 
My choice would be L6. 5160 is tough but in my experience L6 will hold an edge longer and is also very, very tough. I have no use for S7.
 
sunfishman said:
My choice would be L6. 5160 is tough but in my experience L6 will hold an edge longer and is also very, very tough. I have no use for S7.
Click to expand...

I like the way Don is thinking on this issue. L6 is one of my favorite steels. :thumbup:
 
I have to agree that L-6 is a better edge holding steel than 5160.I just use 5160 most because I have 1500 pounds of it,not much need in anymore steel for a long time:D :D :D L-6 would be my first choice otherwise.

Bruce
 
Thanks for all the replies! It's been really informative.

Looks like L6 would be the way to go, however I can't find any L6 in flat bar stock. I'm currently using stock removal to make knives, so I can't forge down any round bar.

I'm going to try some 5160, and when I finally get a place where I can forge, I'll try some L6.

Thanks again for the replies!:thumbup:
 
Terry_Dodson said:
Has anyone used 8670M form Admiral Steel? How does it compare to other L-6's?
Click to expand...

After making several test blades from 8670, I've decided not to use it for a knife all by itself, but I think it's great for mixing with 1084, 1095, or W2 in damascus.
 
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