1095 1095-CroVan

[Toooj]

KnarfEng,

Here is the correct time line:

1) Cold Steel Carbon V was first produced in the Alcas Factory (Cutco and KA-BAR) Mid 1980s, Carbon V was originally 1095CV/0170-06/50100B.
2) Cold Steel moved to Ontario early 1990s. Carbon V started out as 1095CV/0170-06/50100B but while at Ontario, Dan Maragni removed the small amount of nickel from the formula.
3) Cold Steel moved to Camillus approx. 1995. Carbon V stayed 0170-06 minus the nickel.
How do I know all of this?...I worked at all 3 factories.

Basically the last Carbon V is still 0170-06. Don't know why Dan M. removed the nickel. Nickel, in addition to the added toughness, it also decreases the transformation temp. It is added to counterbalance the chrome which raises the transformation temp. We want lower transformation temps when heat treating carbon steel. Notice that the Austenizing temps for stainless steel are much higher due to the large amounts of chrome.

KA-BAR marquenches/martempers it's 1095 Cv blades. I don't know for a fact but I suspect Rowen does the same with ESEE's 1095 blades. Shon is tight lipped about how he heat treats. Marquenching adds toughness while keeping hardness at a very high level.

Hope all of this helps everyone.

Best Regards,

Paul Tsujimoto
Sr Eng
Prod Dev and Qual
KA-BAR Knives

[Guyon]

Wow, what an informative and authoritative post. Thanks.
This one will likely be quoted for a long while around here.
Ought to be in the blade database if it isn't already (that Bladite is fast).

KnarfEng,

Here is the correct time line:

1) Cold Steel Carbon V was first produced in the Alcas Factory (Cutco and KA-BAR) Mid 1980s, Carbon V was originally 1095CV/0170-06/50100B.
2) Cold Steel moved to Ontario early 1990s. Carbon V started out as 1095CV/0170-06/50100B but while at Ontario, Dan Maragni removed the small amount of nickel from the formula.
3) Cold Steel moved to Camillus approx. 1995. Carbon V stayed 0170-06 minus the nickel.
How do I know all of this?...I worked at all 3 factories.

Basically the last Carbon V is still 0170-06. Don't know why Dan M. removed the nickel. Nickel, in addition to the added toughness, it also decreases the transformation temp. It is added to counterbalance the chrome which raises the transformation temp. We want lower transformation temps when heat treating carbon steel. Notice that the Austenizing temps for stainless steel are much higher due to the large amounts of chrome.

KA-BAR marquenches/martempers it's 1095 Cv blades. I don't know for a fact but I suspect Rowen does the same with ESEE's 1095 blades. Shon is tight lipped about how he heat treats. Marquenching adds toughness while keeping hardness at a very high level.

Hope all of this helps everyone.

Best Regards,

Paul Tsujimoto
Sr Eng
Prod Dev and Qual
KA-BAR Knives

[Moosez45]

TOOOOOOOOOOOOOOOJ!!!!!!

Wow, thank you for the information. It will most certainly needs to be added, this is some good stuff.

Thanks Toooj.

Moose

[Flexxx]

KnarfEng,

Here is the correct time line:

1) Cold Steel Carbon V was first produced in the Alcas Factory (Cutco and KA-BAR) Mid 1980s, Carbon V was originally 1095CV/0170-06/50100B.
2) Cold Steel moved to Ontario early 1990s. Carbon V started out as 1095CV/0170-06/50100B but while at Ontario, Dan Maragni removed the small amount of nickel from the formula.
3) Cold Steel moved to Camillus approx. 1995. Carbon V stayed 0170-06 minus the nickel.
How do I know all of this?...I worked at all 3 factories.

Basically the last Carbon V is still 0170-06. Don't know why Dan M. removed the nickel. Nickel, in addition to the added toughness, it also decreases the transformation temp. It is added to counterbalance the chrome which raises the transformation temp. We want lower transformation temps when heat treating carbon steel. Notice that the Austenizing temps for stainless steel are much higher due to the large amounts of chrome.

KA-BAR marquenches/martempers it's 1095 Cv blades. I don't know for a fact but I suspect Rowen does the same with ESEE's 1095 blades. Shon is tight lipped about how he heat treats. Marquenching adds toughness while keeping hardness at a very high level.

Hope all of this helps everyone.

Best Regards,

Paul Tsujimoto
Sr Eng
Prod Dev and Qual
KA-BAR Knives

Excellent work, very good info...
By the way Paul is the best name in the world, I have heard people with this name are women getting machines, and are very good looking.....

[Toooj]

By the way Paul is the best name in the world, I have heard people with this name are women getting machines, and are very good looking.....

Sorry Flexxx,

That doesn't descibe me. I'm just a lowly knife engineer. Women don't pay attention to knife engineers. I had to trick my wife into thinking I was an accountant.


Best Regards,

Paul Tsujimoto
Sr Eng
Prod Dev and Qual
KA-BAR Knives

[Moosez45]

Sorry Flexxx,

That doesn't descibe me. I'm just a lowly knife engineer. Women don't pay attention to knife engineers. I had to trick my wife into thinking I was an accountant.


Best Regards,

Paul Tsujimoto
Sr Eng
Prod Dev and Qual
KA-BAR Knives

Pfft!! I've seen you in person Toooj, now you're just making stuff up.

Just so ya'll know, Toooj started working with the TDI program, just to deal with the mobs of chicas that maul him up good at trade shows, and rep days.

You's a good lookin' man. If I wasn't married with a girlfriend and a boyfriend, I might be lookin' you up.



See ya at blade!!

Moose

[Guyon]

Okay... I may not be going to the chop-in or Blade Show....

You's a good lookin' man. If I wasn't married with a girlfriend and a boyfriend, I might be lookin' you up.



See ya at blade!!

Moose

[Moosez45]

Okay... I may not be going to the chop-in or Blade Show....

Chicken?
Skeered?
Not comfortable with the probability of outside options?
Not strong enough in your choice of preferences?

Coward.
Hater.


Moose

[Guyon]

I'm just afraid of a scene on the show floor if I show up with my hyper-masculine good looks. I'd hate to banned at future shows.

[Flexxx]

Sorry for causing you guys to fight its not our fault the name (PAUL) makes everyone be jealous.....

when we are born, if your damn good looking you get the name (PAUL)

[Moosez45]

I'm just afraid of a scene on the show floor if I show up with my hyper-masculine good looks. I'd hate to banned at future shows.

Wow. Bullsh!t is different color on the internet. Interesting.

Moose

[Toooj]

Knarfeng,

Here is the chemistry for Sharon Steel 0170-06 (From Sharon Steel ref.book)

C: 0.95-1.10; Mn:0.30-0.50; P:0.025max; S: 0.025max; Si:0.15-0.25; Cr:0.40-0.60; Ni:0.25; Mo:0.06; V:0.15-0.25.

This is also the formula for KA-BAR's 1095CV. If one orders enough steel a steel company will make what ever one wants. That is the case with both Cold Steel Carbon V and Case CV variations on 0179-06. Slight variations can be thought of as entirely different steels or just a variation. It's all good steel but it still must be processed properly.
Unless there was a radical change that I didn't know about, Camillus processed the Carbon V with a lead pot/oil quench using a traditional Austenizing/Quench/Temper process. Dan Maragni's strong point was fine tuning the temps, making sure the heat thermocouples were proper, heating medium was proper, quench oil had the proper additives. He was (is) very good at that.
I like Dan alot and I miss our great conversations when Cold Steel was at Ontario.
Hope this helps.



Best Regards,

Paul Tsujimoto
Sr Eng
Prod Dev and Qual
KA-BAR Knives

[knarfeng]

I greatly appreciate the information. And I do stand corrected.

Thanks!
Frank R

Knarfeng,

Here is the chemistry for Sharon Steel 0170-06 (From Sharon Steel ref.book)

C: 0.95-1.10; Mn:0.30-0.50; P:0.025max; S: 0.025max; Si:0.15-0.25; Cr:0.40-0.60; Ni:0.25; Mo:0.06; V:0.15-0.25.

This is also the formula for KA-BAR's 1095CV. If one orders enough steel a steel company will make what ever one wants. That is the case with both Cold Steel Carbon V and Case CV variations on 0179-06. Slight variations can be thought of as entirely different steels or just a variation. It's all good steel but it still must be processed properly.
Unless there was a radical change that I didn't know about, Camillus processed the Carbon V with a lead potoil quench using a traditional Austenizing/Quench/Temper process. Dan Maragni's strong point was fine tuning the temps, making sure the heat thermocouples were proper, heating medium was proper, quench oil had the proper additives. He was (is) very good at that.
I like Dan alot and I miss our great conversations when Cold Steel was at Ontario.
Hope this helps.



Best Regards,

Paul Tsujimoto
Sr Eng
Prod Dev and Qual
KA-BAR Knives

[Toooj]

Knarfeng,

Glad to help you out. I know you are a good student of knives. And being an engineer, want to always be accurate (the curse of all engineers)

Best Regards,

Paul Tsujimoto
Sr Eng
Prod Dev and Qual
KA-BAR Knives

[divbis0]

Tsujimoto, Never heard of a knife engineer. I guess that makes me a turbine-blade engineer?

PS, my wife *still* thinks I'm a stock broker... she has a low creep resistance

[shunsui]

Thanks, Toooj, those Carbon V (it's a secret) threads were getting vaguely annoying.

[Flexxx]

Thanks, Toooj, those Carbon V (it's a secret) threads were getting vaguely annoying.

Agreed....

[The Warrior]

Sorry to bump up an older thread. This was before my time here. Jarodmichael linked to this earlier, so I read it. Dang, is Toooj the man, or what? This man is a steel guru.