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VooDooWitchDoctor

VooDooWitchDoctor

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Um... isn't 50100B the same as SR101? Or was that 52100? Or was it analogous to SR7? 🤷‍♂️
 
Busto said:
Specs are closer to 1095 Cro-Van than 52100 (SR 101) so basically a 1095 with some additional elements.
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yay-nay...
1095 being a spring steel (think the ooooold Mecedes cars) versus ball bearing steels...
 
elof_alv said:
yay-nay...
1095 being a spring steel (think the ooooold Mecedes cars) versus ball bearing steels...
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1095 being Carbon Steel....not just Spring Steel....manufacturers call these by different names, Carbon V, Cro-Van, etc. With the addition of elements they can increase it's potential as blade steel, however it still retains its Carbon Steel base. You can call it Ball Bearing steel, Tool Steel based on Alloying, but it's still carbon steel.....as is INFI...old mercedes or not the fact remains it's 1095 based.

ETA: They dropped 52100 (best known ball bearing steel) because they lost the capability to heat treat large quantities, so why would they replace it with yet another ball bearing steel...?
 
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Busto said:
1095 being Carbon Steel....not just Spring Steel....manufacturers call these by different names, Carbon V, Cro-Van, etc. With the addition of elements they can increase it's potential as blade steel, however it still retains its Carbon Steel base. You can call it Ball Bearing steel, Tool Steel based on Alloying, but it's still carbon steel.....as is INFI...old mercedes or not the fact remains it's 1095 based.
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We migghta have been reading a different version of the Cinderella fairytale...

If it was posible, I'd love to see you driving in a car with 1095 ball bearings... springs on the other side...

Aside from the H1, LC200N and a whole host of alloys that are called stainless 'steel'... which they are NOT because their basic composition does not have enough carbon, so they're not really steels!

Funny thing I had some conversations with a fellow who's scrapping dead appliences for the company that I work for, and my boss recently...
First one keeps saying that if it is magnetic is not stainless because someone said so...
My boss keeps going about heat treatment that makes steels magnetic...

Cast iron trivets (the grate thingie on top of the gas cooktop) being cast iron would not be heat treated at all, it's just cast iron thing... but it's magnetic!

Nope, INFI is not 1095 based, unless you take the basic STEEL composition... then all steels are related...

And the term 'carbon steel' is the equivalent of 'buttery butter'... not enough carbon in the alloy... it no longer is a steel...
 
elof_alv said:
Nope, INFI is not 1095 based, unless you take the basic STEEL composition... then all steels are related...
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Correct...INFI is it's own Magical Entity.....However it's first ELEMENT is carbon with addition of specified elements to concoct that magical property of INFI.

50100B is 1095 Based (key word) with specified elements that Elevate it above run of the mill 1095.....LIKE INFI it has been Alloyed to improve it's properties....

BTW... you don't NEED bearings you can use BUSHINGS for supporting an axle or AIR....Different applications...Turbo fans run on oil/air bushings because bearings can't handle the heat or speed....just sayin' different applications.

ETA: As a side note...I retired from NASA where I had the opportunity to work with many exotic "Steels" and composites as a machinist and engineer....I'm not proud of it...my mother told her friends I ran off with the Circus .:D
 
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Busto said:
ETA: They dropped 52100 (best known ball bearing steel) because they lost the capability to heat treat large quantities, so why would they replace it with yet another ball bearing steel...?
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This is the biggest thing I don't understand. I thought both were essentially heat treated in the same media, just different schedule.
 
All I know is I ordered one of each :)
 
Private Klink said:
Just Google 52100B steel or Sharon Steel and it should answer most questions. ;)
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Well... all the information I could find on heat treatment of either of them talked about air-cooling [edit: that appears to be for normalizing; all I can find on quenching indicates either oil for both, or, in one document I found, "Do." for both). And the heating and soaking numbers were similar. So, I'm back to why switch to 50100 if they lost the heat-treatment capability for 52100?
 
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I’ve aid it before and I will say it again, the steel and heat treat don’t tend to make as much difference as the overall design and geometry IMO. Most would be hard pressed to tell a substantial difference in steels even under careful scientific methods. The geometry on these Lab Rats is why you should buy one, period. They are thin enough where it counts and the inverse is also true regarding durability being sufficient.
 
Father & Son Traditional Sharpening said:
I’ve aid it before and I will say it again, the steel and heat treat don’t tend to make as much difference as the overall design and geometry IMO. Most would be hard pressed to tell a substantial difference in steels even under careful scientific methods. The geometry on these Lab Rats is why you should buy one, period. They are thin enough where it counts and the inverse is also true regarding durability being sufficient.
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If you talking to me, that's not my point. I'll agree with you, especially in the difference between 50100 and 52100. But that IS the point. SR-101 went away because they lost the ability to heat treat it. SR-101 is (I thought) 52100(B?) with special heat treatment. Now they are going to 50100(B?). Everything I can find shows, within my ability to understand, that 50100 and 52100 are heat treated the same. So... why the change to 50100?

It's all academic, but I wonder if it is because they lost the ability to do the special heat treatment on 52100 that made it SR-101, and between non-specially heat-treated 52100 and 50100, is 50100 the better performer for toughness? So that the problem isn't heat treating 52100, but heat treating any steel to the standards that made it SR-101.
 
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