What Happened to SR-77?

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Blain

Blain

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Seemed like a decent steel. As tough, if not tougher, than Infi, more corrosion resistant than Sr-101, held a decent edge. What was the main reason for Busse to move away from S7 and back towards 52100? Was it supply issues? QC problems? Performance issues? etc.

I had read on one forum about how there were some "catastrophic failures" with some of the SR-77 knives but my research hasn't been able to find one documented case of that. If anything, SR-77 should be less prone to catastrophic failure than Infi and 52100.

Has busse evaluated say 80crv2 as a potential steel option? Seems to compare very favorably to 52100, if not tougher, not chippy like 52100, and easier to sharpen.
 
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I think I'll let cobalt take this one, he always seems to do his homework on metallurgy. No doubt he will be along soon
 
My opinion for what its worth...
I'm not sure exactly what the composition difference between sr-77 and s7 is (if any), but I have a few knives/swords in s7. S7 I believe is one of the few steels that is tougher than Infi, but the edge retention is much worse (depending on the application). S7, which is used for jackhammer heads, would be a great steel for a sniper-hawk like axe or similar beater. It is probably the best steel for showing off demolition applications like chopping through sheet metal and cinderblocks. I think it is also one of least corrosion resistant steels, and is worse than sr 101 in that respect.

Re 80crv2...
Forgive me, I strayed, and recently picked a Winkler Spike in 80crv2. It has an outstanding edge and has held it through some abuse. It has just a bit of Vanadium, but not too much; I really like the stuff. :thumbup:
 
mach 5 said:
My opinion for what its worth...
I'm not sure exactly what the composition difference between sr-77 and s7 is (if any), but I have a few knives/swords in s7. S7 I believe is one of the few steels that is tougher than Infi, but the edge retention is much worse (depending on the application). S7, which is used for jackhammer heads, would be a great steel for a sniper-hawk like axe or similar beater. It is probably the best steel for showing off demolition applications like chopping through sheet metal and cinderblocks. I think it is also one of least corrosion resistant steels, and is worse than sr 101 in that respect.

Re 80crv2...
Forgive me, I strayed, and recently picked a Winkler Spike in 80crv2. It has an outstanding edge and has held it through some abuse. It has just a bit of Vanadium, but not too much; I really like the stuff. :thumbup:
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Wow what a small world, I have been considering picking up a Winkler Spike here lately. Worth it I take it? He seems to make top notch knives. I am more of a collector anyway but I like to know that if I needed to use them they would perform flawlessly.
 
engineerciv said:
Wow what a small world, I have been considering picking up a Winkler Spike here lately. Worth it I take it? He seems to make top notch knives. I am more of a collector anyway but I like to know that if I needed to use them they would perform flawlessly.
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I have one (user) of his axes in 52100 and it has taken a stout beating with impeccable performance. I emailed Daniel when he switched to 80crv2, he wrote back and I ended up picking up a Spike. As promised, the 80crv2 is amazing stuff and the spike is an outstanding design. pm me if you want more of a review since I don't want to derail a Busse thread. Do not doubt, I still have plenty of infi I love as well :)

ps if your not going to use it hard, check out his damascus
 
subscribed...

and eagerly awaiting anyone's data from "on the ground" trials...

so are the MtnManDu's the last iteration of sr77?
 
mach 5 said:
I have one (user) of his axes in 52100 and it has taken a stout beating with impeccable performance. I emailed Daniel when he switched to 80crv2, he wrote back and I ended up picking up a Spike. As promised, the 80crv2 is amazing stuff and the spike is an outstanding design. pm me if you want more of a review since I don't want to derail a Busse thread. Do not doubt, I still have plenty of infi I love as well :)

ps if your not going to use it hard, check out his damascus
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Would you say in your experience that the blade in 80crv2 performs better than the blade from them previously in 52100?
 
Blain said:
Seemed like a decent steel. As tough, if not tougher, than Infi, more corrosion resistant than Sr-101, held a decent edge. What was the main reason for Busse to move away from S7 and back towards 52100? Was it supply issues? QC problems? Performance issues? etc.

I had read on one forum about how there were some "catastrophic failures" with some of the SR-77 knives but my research hasn't been able to find one documented case of that. If anything, SR-77 should be less prone to catastrophic failure than Infi and 52100.

Has busse evaluated say 80crv2 as a potential steel option? Seems to compare very favorably to 52100, if not tougher, not chippy like 52100, and easier to sharpen.
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I thought it was the other way around
 
Blain said:
Would you say in your experience that the blade in 80crv2 performs better than the blade from them previously in 52100?
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Keep in mind that my Winkler user in 5100 is an axe so the geometry is totally different. I do believe that 80crv2 is an upgrade from 52100. I can tell you that the one I received was one of the sharpest out of the box knives that I have purchased and in the last 2 months it has not dulled past shaving sharp. I have not done any epic beating on the knife, but it has seen significant use.
80crv2 is kind of a black sheep for some reason. The composition looks great, I can tell you that it performs great, and yet there is almost no info on the net about it - Thats why I had to email the maker to find out what the deal was. If you are into trying new steels, I recommend that you give it a try. I was pleasantly surprised.
 
Well no one can say for sure why there isn't much SR-77 like there use to be, but I remember talking to Jerry once about SR-77 and SR101 and he seemed to prefer SR101's edge holding with adequate toughness. I also asked Jerry of comparative toughness and although he did say SR-77 was tougher than SR101, it was the flexing ability of SR-77 at full hardness that was amazing. I think his biggest issue was edge stability compared to sr101. But in a big knife I would think it would be the preferred steel.
 
It's very tough and takes a beating nicely. It's edge retention isn't that of INFI and SR101 but is still pretty good. It's very easy to sharpen and takes a wicked sharp edge. It prefer a slightly toothy edge on it as it lasts longer.

tumblr_nvf133PqgG1siuc9oo1_1280.jpg


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tumblr_nvf133PqgG1siuc9oo3_1280.jpg
 
Cobalt said:
Well no one can say for sure why there isn't much SR-77 like there use to be, but I remember talking to Jerry once about SR-77 and SR101 and he seemed to prefer SR101's edge holding with adequate toughness. I also asked Jerry of comparative toughness and although he did say SR-77 was tougher than SR101, it was the flexing ability of SR-77 at full hardness that was amazing. I think his biggest issue was edge stability compared to sr101. But in a big knife I would think it would be the preferred steel.
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great stuff

http://youtu.be/r9PIPhBqrLQ

It sure can flex

http://youtu.be/4oJ7TCHHAFQ

Roshambo?

http://youtu.be/j4JdWQSu_c8
 
Blain said:
Seemed like a decent steel. As tough, if not tougher, than Infi, more corrosion resistant than Sr-101, held a decent edge. What was the main reason for Busse to move away from S7 and back towards 52100? Was it supply issues? QC problems? Performance issues? etc.

I had read on one forum about how there were some "catastrophic failures" with some of the SR-77 knives but my research hasn't been able to find one documented case of that. If anything, SR-77 should be less prone to catastrophic failure than Infi and 52100.

Has busse evaluated say 80crv2 as a potential steel option? Seems to compare very favorably to 52100, if not tougher, not chippy like 52100, and easier to sharpen.
Click to expand...

It's more about whats easy for Scrapyard to work with on mass produced blades. For me SR-101 does not make sense on blades 8" and longer. There are better options but anyway......
 
number41 said:
It's more about whats easy for Scrapyard to work with on mass produced blades. For me SR-101 does not make sense on blades 8" and longer. There are better options but anyway......
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52100 is not sooooo fragile as you stated , from my expriences 52100(sr101) can make perfect choppers that has over 8" , i think 52100 is tougher than 1095 , with given the same hardenss .
 
dingy said:
52100 is not sooooo fragile as you stated , from my expriences 52100(sr101) can make perfect choppers that has over 8" , i think 52100 is tougher than 1095 , with given the same hardenss .
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Nothing wrong with 52100, it's a solid steel. I would prefer something with lower Carbides.
 
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