Are your knives bulletproof?

TikTock said:
NICE!

This is FAR more impressive than the bullet splitting videos we see. Would it have survived a jacketed round? At the local range, you can use all the lead you want inside, as it splatters instaltly on contact with the backdrop. Recently, some moron fired a fully jacketed round from a match M1 and it pierced the 1/2" back drop, the cinder block wall behind it, and lodged in a target hanger post 20 yards back...scary.

I am, though, VERY impressed with the results you got. Thats an insane amount of lateral force. Maybe try one with the knife pounded into the tree so fully that it can't be dislodged? That might be asking for shatter, though....
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It was a copper jacket hollow point. There is even some copper lodged in the impact area. Hardball ammo would be a good test bullet to try.
Scott
 
Received a SOG today and it came with a mini catalog. There was a picture of a blade being sliced by a blade. Do you guys think SOG's bullet splitting blades are true?
 
Scott, that is awsome !! I think you've shown your skills in heat treating for sure in this test ! :eek:

Deathshead, the SOG bullet shots are real, I've spoke to Spencer Frazer (SOG owner) about it and he said it took several shots in the original pics before the "perfect split" was obtained.

Robbie Roberson ;)
 
Holy Blade Abuse, Batman!! :eek:

Kinda makes those "world's toughest knives" that snap while batonning look even more lame, huh? :D

I'm not familiar with that S7 steel, looks like it'd be ideal for a camp knife used for chopping and splitting. Besides toughness (which you've proved to be adequate to a ludicrous degree), how is the steel otherwise? What hardness do you run it at? What sort of edge will it take? How well does it retain an edge? What's it like to sharpen, especially in the field? How stable is the edge (chipping, rolling)?

(Inquisitive lil' bugger, ain't I? ;) )
 
S7 is a shock steel, designed for maximal impact toughness, the shock steels have maximal toughness at very high hardness, just under 60 HRC. Their wear resistance is low, not great blades for cutting a lot of cardboard, but for wood working blades, deformation and fracture are what cause blunting not wear. The grindability is also really low so they will work very easily on stones.

-Cliff
 
Gryffin said:
Holy Blade Abuse, Batman!! :eek:

Kinda makes those "world's toughest knives" that snap while batonning look even more lame, huh? :D

I'm not familiar with that S7 steel, looks like it'd be ideal for a camp knife used for chopping and splitting. Besides toughness (which you've proved to be adequate to a ludicrous degree), how is the steel otherwise? What hardness do you run it at? What sort of edge will it take? How well does it retain an edge? What's it like to sharpen, especially in the field? How stable is the edge (chipping, rolling)?

(Inquisitive lil' bugger, ain't I? ;) )
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Gryffin, the HT data I'm following puts my blades at about 57rc. The convex edge I put on them is more stout then a v-grind secondary bevel. The edge will roll before chipping and the blade will bend before breaking as shown with the magnum impact. I've also chopped steel banding and nails with this blade. It won't hold an edge as long as D2 or A2 but holds it pretty good when working with wood. It's fairly easy to resharpen too. This is a pic of a tree I cut up with the S7 BoarHunter knife and on the trunk I used my Gransfor Bruks axe. Edge holding was quite good considering the lower hardness.

cutup.JPG


bhunter.JPG


Scott
 
What different thickness can you get S7 in?

Sounds like it would make a great Bushcrafter steel?
 
The Last Confederate said:
What different thickness can you get S7 in?

Sounds like it would make a great Bushcrafter steel?
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I can get it in 1/8", 5/32" 3/16", 1/4" and 5/16".
Scott
 
Crap, knew I forgot to ask something...

How about corrosion resistance?

(I just might have to have you make me a camp knife outta that stuff... :D )
 
Gryffin said:
Crap, knew I forgot to ask something...

How about corrosion resistance?

(I just might have to have you make me a camp knife outta that stuff... :D )
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It is more likely to rust, more so then D2 or A2. S7 has 3.25% chromium where D2 has 11.5% and A2 has 5.25%.
Scott
 
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