Here you go Rats and Dogs, mystery solved!!!

Cobalt

Cobalt

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Dec 23, 1998
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The secret to SR101 and SR77 is no longer a secret like INFI hasn't been for some time. Here is the info compared to it's relatives. You decide.

So here is what I found using Niton XL2. Not mine obviously. Very expensive device.

SR101
LEC = 1.22 Elements with atomic number lower than 17 (1% C, 0.22% Si is likely here)
Chrome = 1.46
Manganese = 0.69
Copper = 0.27
Fe = 96.36

52100
Carbon = 0.98 - 1.1
Chrome = 1.3 - 1.6
Manganese = 0.25- 0.45
Silicone = 0.15 - 0.35
Fe = remainder

So SR101 is very close to 52100. If you take Lec and subtract 1% Carbon from it, then the remaining 0.22% is likely silicone. SR101 has copper in it. It also has considerably more Manganese. Certainly this is close to 52100 with only minor differences. 0.34% more Manganese than 52100. It has 0.27% copper which 52100 does not. That is 0.61% more elements than 52100.


SR77
Chrome = 3.0
Manganese = 0.74
Molybdenum = 1.39
Vanadium = 0.24
Fe = 93.15
LEC = 1.48 Elements with atomic number lower than 17 (.5% C and up to 1% Si is likely here)

S7 Steel
Carbon = 0.45 - 0.55
Chrome = 3.0 - 3.5
Manganese = 0.2 - 0.8
Molybdenum = 1.3 - 1.8
Vanadium = 0.2 - 0.3
Si = 0.3 - 1.0
Fe = remainder

As with SR101 above if you remove 0.5% Carbon from LEC, then the remainder is silicone. So SR77 and S7 appear to be the same steel.

LEC are elements that do not show up on the analysis due to their low atomic number. Usually 17 or less.
 
So backdoor pizza is still working magic? :cool: ;) I might have to get the name of this place from you.

Relatively few cutlery steels have Copper in them. The only one I can think of off the top of my head is ATS-55. I find that very interesting!!!

Thanks for doing this Cobalt! :thumbup: Now we have some cold, hard evidence to give the naysayers when they say that Bussekin are using basic, off-the-shelf steels. No! Busse is Magic... ;)

Just kidding. lol :D But this is GREAT information to have! Thank you!!! :thumbup:
 
yeah, and that isn't just a little bit of copper. IT is a good amount. That is the knife that was blued and I soaked it in white vinegar to remove the blueing. SO the steel is as bare as it can get.

swamp3.jpg
 
Thanks for taking the time to do this.

Now we can pimp slap all the unwashed masses with knowledge when they wine about Sr101 just being 52100 and sr77 being s7.
 
Bigfattyt said:
Thanks for taking the time to do this.

Now we can pimp slap all the unwashed masses with knowledge when they wine about Sr101 just being 52100 and sr77 being s7.
Click to expand...

Ha ha! Got a got a chuckle out of that BFT :)

Thanks for putting for the effort Cobalt :thumbup:
 
Cobalt said:
yeah, and that isn't just a little bit of copper. IT is a good amount. That is the knife that was blued and I soaked it in white vinegar to remove the blueing. SO the steel is as bare as it can get.

swamp3.jpg
Click to expand...

Great looking M9LE, right?
 
Bigfattyt said:
Thanks for taking the time to do this.

Now we can pimp slap all the unwashed masses with knowledge when they wine about Sr101 just being 52100 and sr77 being s7.
Click to expand...

Well, SR-101 is different. SR-77 is S7. I won't say just S7 because I trust Busse to do a damn good job with the steel.
 
Insipid Moniker said:
Well, SR-101 is different. SR-77 is S7. I won't say just S7 because I trust Busse to do a damn good job with the steel.
Click to expand...

Exactly. and I would say that SR101 has only minor differences from 52100. We are talking .5% element difference total with copper and extra manganese. So it really should behave very similar to 52100
 
Cobalt said:
Exactly. and I would say that SR101 has only minor differences from 52100. We are talking .5% element difference total with copper and extra manganese. So it really should behave very similar to 52100
Click to expand...

And that is not at all a bad thing. 52100 with a solid HT is a damn fine steel imo.
 
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