Steel Question

Thanks for the info Jerker!
I'm surprised it hasn't already come up, but can you talk a bit about 14C28N, and where it fits in?
 
14C28N, at this point I can say that it's a joint development project between Kershaw and Sandvik. The goal is to match the edge properties and hardness of 13C26 while increasing the corrosion resistance. It looks good so far. From Sandviks side we want to design the very best fine-grain and fine-blankable knife steel on the market and I believe we will achieve that goal.

Some field testing feedback would be appreciated whenever possible ;).
Regards
//Jerker
 
Jerker, Thanks for all of your input here. It's really something to have the Sandvik man answering questions!

Now, if you really want some non-biased field testing, send em to me! Here's one I beat up for a week! Posts 44 & 45.
 
Razorsharp244 said:
Some field testing feedback would be appreciated whenever possible ;).
Regards
//Jerker
Click to expand...


Oh, you'll get it. Believe me/us, you will get it. :cool:

It's great to have someone straight from Sandvik hanging
around with us and giving the info on the steel we're so
fond of. :thumbup:
 
Razorsharp244 said:
14C28N, at this point I can say that it's a joint development project between Kershaw and Sandvik. The goal is to match the edge properties and hardness of 13C26 while increasing the corrosion resistance. It looks good so far. From Sandviks side we want to design the very best fine-grain and fine-blankable knife steel on the market and I believe we will achieve that goal.

Some field testing feedback would be appreciated whenever possible ;).
Regards
//Jerker
Click to expand...

Does N in the steel name means Nitrogen?
Can you disclose composition of this steel?

Thanks, Vassili.
 
nozh2002 said:
Does N in the steel name means Nitrogen?
Can you disclose composition of this steel?

Thanks, Vassili.
Click to expand...

Hi Vassili,
Yes it's no secret. Check out the Kershaw 2008 product catalogue and there you have it, it's listed as the last one of the steels in their chart.

N is for nitrogen, 14C28N holds 0.08%. It does not sound much but replacing that amount of carbon with nitrogen makes us keep the hardness contribution from the lost Carbon while maintaining better corrosion resistance.

Also Nitrogen is a bit of a headache when it comes to dissolving and evenly distribute it in the steel since it's a gas trying to get out and not a solid element like carbon.

Regards
//Jerker
 
Razorsharp244 said:
Hi Vassili,
Yes it's no secret. Check out the Kershaw 2008 product catalogue and there you have it, it's listed as the last one of the steels in their chart.

N is for nitrogen, 14C28N holds 0.08%. It does not sound much but replacing that amount of carbon with nitrogen makes us keep the hardness contribution from the lost Carbon while maintaining better corrosion resistance.

Also Nitrogen is a bit of a headache when it comes to dissolving and evenly distribute it in the steel since it's a gas trying to get out and not a solid element like carbon.

Regards
//Jerker
Click to expand...

Can someone post composition, I am wondering how close it may be to INFI - which also has some nitrogen.

Thanks, Vassili.
 
3Guardsmen said:
If you don't mind me asking, Commodorewheeler, of which knife/knives (manufacturer?) in 440C do you speak? The reason I ask is that I've had different results with different companies' 440C (eg. Benchmade vs. Boker vs. Entrek). Thank you in advance.

Regards,
3G
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It looks like sufficient details about the steel comparison have been provided without my response, but I have used Benchmade, Boker, and a few customs in 440C before. I can't remember exactly which models they were, because I don't have any of the knives any more except for one of the customs.
 
nozh2002 said:
Can someone post composition, I am wondering how close it may be to INFI - which also has some nitrogen.

Thanks, Vassili.
Click to expand...

Hi again,
I'll post it. When I wrote the responses yesterday I did not have it in front of me. Here are the important elements:

Carbon: 0.62%
Chrome: 14%
Nitrogen: 0.08%

Best Regards
//Jerker
 
If 14C28N manages the edge properties of 13C26 and the corrosion resistance of 12C27 or 12C27mod, would that mean 14C28N would replace 12C27 as the most versatile steel for Sandvik?
 
Larrin said:
If 14C28N manages the edge properties of 13C26 and the corrosion resistance of 12C27 or 12C27mod, would that mean 14C28N would replace 12C27 as the most versatile steel for Sandvik?
Click to expand...

Hi Larrin,
Yes, for sure. 14C28N would be the premuim choice for knife steels and 12C27 would be the option where the demands are lower.

12C27M will still be better corrosion-wise and still merit a unique position there with 59 HRC dish-washer safe. I doubt 14C28N will be able to handle daily dish-washer abuse. But we are not 100% sure of the corrosion resistance for 14C28N yet, I belive it's at least as good as 12C27 though.

Regards
//Jerker
 
I think you told me this at the blade show, but I can't remember exactly. You said that you were quite pleased with how close the 14C28N was to 13C26, but which properties are slightly lower and slightly above? The main ones I'm interested in are carbide volume and hardness.
 
commodorewheeler said:
It looks like sufficient details about the steel comparison have been provided without my response, but I have used Benchmade, Boker, and a few customs in 440C before. I can't remember exactly which models they were, because I don't have any of the knives any more except for one of the customs.
Click to expand...

Thanks, Commodorewheeler.

Regards,
3G
 
Jerker,
Thanks for taking the time to answer not only my newbie-ish questions, but the questions of some of the much more experienced guys, like Larrin and Vassili, too! Sandvik is definitely winning me over as my favorite stainless maker!:thumbup:

Regards,
3G
 
Razorsharp244 said:
Hi again,
I'll post it. When I wrote the responses yesterday I did not have it in front of me. Here are the important elements:

Carbon: 0.62%
Chrome: 14%
Nitrogen: 0.08%

Best Regards
//Jerker
Click to expand...

And INFI is

C=0.5
Va=0.36
Cr=8.25
Co=0.95
Ni=0.74
Mo=1.3
N=0.11

Not really too close. But we may hope it will be great steel also.

Other Nitrogen steel is xn15-TN

C=0.4
Cr=15.5
Mo=2
V=0.3
N=0.2

Known for extreme rust resistance...

What HRC will it be?
Looking forward to see this steel!

Thanks, Vassili.
 
Larrin said:
I think you told me this at the blade show, but I can't remember exactly. You said that you were quite pleased with how close the 14C28N was to 13C26, but which properties are slightly lower and slightly above? The main ones I'm interested in are carbide volume and hardness.
Click to expand...

Hi Larrin,
Carbide volume will be very similar to 13C26, theoretically slightly higher.

For 13C26
C = 0.68%
Cr = 12.9%

14C28N
C + N = 0.70%
Cr = 14%

What we are actually doing is pushing the limit of the secondary carbide density. We know that we are close with 13C26 but with the added nitrogen we see that we can increase the Chrome-content (+1%) without forming large primary carbides. Primary carbides "steals" carbon and indirectly decreases hardness.

From the hardness tests we have made we see that 14C28N behaves very similar to 13C26 at least down to -70C/-95F (cryo). Recommended range for 13C26 is 55-62 HRC, so I expect 14C28N to be the same range.

Regards
//Jerker
 
3Guardsmen said:
Jerker,
Thanks for taking the time to answer not only my newbie-ish questions, but the questions of some of the much more experienced guys, like Larrin and Vassili, too! Sandvik is definitely winning me over as my favorite stainless maker!:thumbup:

Regards,
3G
Click to expand...

Thanks 3G, I'm happy to help.

//Regards
//Jerker
 
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