What happened to 3v versus sr-101?

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Cobalt said:
I am pretty sure SR101 has 5% chrome. SR101, isn't exactly 52100, it is modified 52100
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I don't think it make sense to call 1% Carbon with 5% Chrome steel as a modified 52100... do you know that 52100 is oil hardening steel and by adding additional 3.5% would high likely make it an air hardening steel... completely different animal in my book...
by this logic I can call A2 as a modified W2 too... that was pretty dump isn't it?

52100 is a ball bearing steel made via vacuum melt process.
Since ball bearing application demands high quality material, therefore every ball bearing steel such as Bohler's R100, Carpenter's 52100 and most of any company product will have very tight spec which have very alike composition... 1% Carbon, 1.5%Chromium with a hint of silicon and manganese...

Do you have any source to back up your word that SR101 has 5% chrome?
 
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shqxk said:
I don't think it make sense to call 1% Carbon with 5% Chrome steel as a modified 52100... do you know that 52100 is oil hardening steel and by adding additional 3.5% would high likely make it an air hardening steel... completely different animal in my book...
by this logic I can call A2 as a modified W2 too... that was pretty dump isn't it?

52100 is a ball bearing steel made via vacuum melt process.
Since ball bearing application demands high quality material, therefore every ball bearing steel such as Bohler's R100, Carpenter's 52100 and most of any company product will have very tight spec which have very alike composition... 1% Carbon, 1.5%Chromium with a hint of silicon and manganese...

Do you have any source to back up your word that SR101 has 5% chrome?
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It doesn't matter what you think. If it is called that, then that is what it is called, regardless of what YOU think. Fact is, this is done all the time. A8 and Modified A8 with 3% more chrome for example.

As for my word, my word was gotten from a very well known knife maker in the industry(and I have no reason to tell you who it is). Is it true? I do not know. I have not verified it myself, but it certainly goes well with the description of SR101 by Busse. but since you are on this forum and asking you must own some SR101, so why don't you go test it and see?
 
Cobalt said:
It doesn't matter what you think. If it is called that, then that is what it is called, regardless of what YOU think. Fact is, this is done all the time. A8 and Modified A8 with 3% more chrome for example.

As for my word, my word was gotten from a very well known knife maker in the industry(and I have no reason to tell you who it is). Is it true? I do not know. I have not verified it myself, but it certainly goes well with the description of SR101 by Busse. but since you are on this forum and asking you must own some SR101, so why don't you go test it and see?
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man, from my exprience of using rats & dogs , i felt that sr101 does not have such high amount of Chromium , cauz that sr101 is more easy to rust than 1095 .
if the Sr101 has 5% Chromium & 1% carbon , there must be some resistance to rust.:D
 
dingy said:
man, from my exprience of using rats & dogs , i felt that sr101 does not have such high amount of Chromium , cauz that sr101 is more easy to rust than 1095 .
if the Sr101 has 5% Chromium & 1% carbon , there must be some resistance to rust.:D
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Interesting. I have not noticed that but I agree with you that it does rust. It could also be that like INFI the formula of SR101 has changed.
 
shqxk said:
I don't think it make sense to call 1% Carbon with 5% Chrome steel as a modified 52100... do you know that 52100 is oil hardening steel and by adding additional 3.5% would high likely make it an air hardening steel... completely different animal in my book...
by this logic I can call A2 as a modified W2 too... that was pretty dump isn't it?

52100 is a ball bearing steel made via vacuum melt process.
Since ball bearing application demands high quality material, therefore every ball bearing steel such as Bohler's R100, Carpenter's 52100 and most of any company product will have very tight spec which have very alike composition... 1% Carbon, 1.5%Chromium with a hint of silicon and manganese...

Do you have any source to back up your word that SR101 has 5% chrome?
Click to expand...

I completely agree that 5% chrome would make it an air hardening steel which means that it could not be deferentially heat treated like the old Rats were also at that chrome level it would have comparable rust resistance to A2 which SR101 simply doesn't have it will rust much quicker than A2.

That being said I am still very happy with all my SR101 knives and have never had a doubt that they would perform what tasks I have asked from them.
 
PatrickKnight said:
I completely agree that 5% chrome would make it an air hardening steel which means that it could not be deferentially heat treated like the old Rats were also at that chrome level it would have comparable rust resistance to A2 which SR101 simply doesn't have it will rust much quicker than A2.

That being said I am still very happy with all my SR101 knives and have never had a doubt that they would perform what tasks I have asked from them.
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Not a good comparison to A2. There are a lot more micro constituents in A2 than 52100 that help in corrosion resistance. Even with 5% chrome SR101 would still corrode easier.
 
Chromium content doesn't automaticallyctranslate to corrosion resistance, especially at such low levels. Sometimes it's used to impart other qualities to the finished blade.
 
Well, the things I have noticed regarding SR101 and corrosion are that it only surface rusts, but does not get cancerous rust which eats into the metal, even the edge, so it seems fairly resistant where it matters most. I've been testing this with my 1311 by leaving it on my tractor where it has been exposed to the elements for about two years now just to see if I lost any edge metal like a carbon knife does, but thankfully it has not. :)
 
firecog said:
Chromium content doesn't automaticallyctranslate to corrosion resistance, especially at such low levels. Sometimes it's used to impart other qualities to the finished blade.
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This is exactly right, and what most people don't understand about properties of steel. It is funny how you can increase toughness by adding Cr to a point and then toughness begins to drop with more Cr. Most chipper steels, which are very tough, have between 5 and 8% Cr. After that toughness drops off fast with more Cr.
 
Cobalt said:
This is exactly right, and what most people don't understand about properties of steel. It is funny how you can increase toughness by adding Cr to a point and then toughness begins to drop with more Cr. Most chipper steels, which are very tough, have between 5 and 8% Cr. After that toughness drops off fast with more Cr.
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for real , man?
 
What happened to jerry's test on 3v versus sr-101?
and Is everything well with the test by gsx-rboy750?
:D:D:
 
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Cobalt said:
It doesn't matter what you think. If it is called that, then that is what it is called, regardless of what YOU think. Fact is, this is done all the time. A8 and Modified A8 with 3% more chrome for example.

As for my word, my word was gotten from a very well known knife maker in the industry(and I have no reason to tell you who it is). Is it true? I do not know. I have not verified it myself, but it certainly goes well with the description of SR101 by Busse. but since you are on this forum and asking you must own some SR101, so why don't you go test it and see?
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Testing would be best. It is cheap as dirt, and is not destructive to knife.

btw SR101 with 5% chrome would be almost A2.

Anyway - I would like to see a good test too. Because 52100(mod or not) and 3V are two completely different approaches to tool steel.
One is high carbon primary tempered steel, and other is high alloy, secondary tempering steel, Different process, different carbides, different matrix hardness and so on.
Different beasts. oldschool vs newschool.
 
dingy said:
for real , man?
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For reals !!! ;)

Take a look at D2 it is just under what is considered a stainless steel at 12% Cr and it's toughness is half of A2 and 1/3rd of 3V at the same hardness. Of course it isn't just Cr, it is a combination of other elements and what the Cr is being used in the steel for.

Back in the 1990's there was a knife maker by the name of Johanning who was making some seriously ugly fixed blade hard use knives. But these knives were known for extreme toughness The steel he used was Modified A8. Mod A8 is a tougher take on A8. A8 has about 5% Cr in it and Mod A8 had 8& Cr in it. I remember he was doing some crazy tests with it like pushing the knife through thick steel plate kinda like Jerry did with the original SHBM. Extremely tough knives. They were just downright ugly and never caught on. A better design and he would probably be one of the top makers today. Who knows. But again 5-8% Cr does the trick.
 
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