Bohler M398 steel

[Larrin]

Rex 121 has around 35% carbide volume, and it is a complex MC carbide. Should have significantly more wear resistance than M398.

 

[dirc]

with a 35% carbide volume, I'm guessing it will chip if you sneeze too hard on it? : p

but seriously, I think they've all gone too far on the extreme wear resistance side with these new steels (to the detriment of toughness)

 

[Natlek]

with a 35% carbide volume, I'm guessing it will chip if you sneeze too hard on it? : p

but seriously, I think they've all gone too far on the extreme wear resistance side with these new steels (to the detriment of toughness)

What kind of toughness need 2-3 inch dia. screw for fed plastic molding machines

 

[marrenmiller]

I published my analysis of the steel: https://knifesteelnerds.com/2019/05/06/bohler-m398/

Nice one, once again.

I think I'll stick with lower wear steels, as I already hate reprofiling M390. I'd love to get some more options for stainless steels with more toughness, as chipping is the number one problem I have with stainless super steels.

 

[dirc]

Nice one, once again.

I think I'll stick with lower wear steels, as I already hate reprofiling M390. I'd love to get some more options for stainless steels with more toughness, as chipping is the number one problem I have with stainless super steels.

the answer is aeb-l or 13c26 or sandvik 14c28n (which is different from aeb-l but should be very similar in terms of toughness)

I know those are not 'super' steels in the sense they are not made with pm tech...
but on that end, s35vn is still one of the best all around choices since it was designed to have more toughness than s30v but keep the wear resistance

I wish they used aeb-l with a high amount of added vanadium... and the thing is, it exists, but I never see it used

http://www.zknives.com/knives/steels/1.4153.shtml
or
http://www.zknives.com/knives/steels/1.2391.shtml
or
http://www.zknives.com/knives/steels/Bohler-Uddeholm/n678.shtml

it would be interesting if they did a pm version of this ; )

 

[marrenmiller]

the answer is aeb-l or 13c26 or sandvik 14c28n (which is different from aeb-l but should be very similar in terms of toughness)

I know those are not 'super' steels in the sense they are not made with pm tech...
but on that end, s35vn is still one of the best all around choices since it was designed to have more toughness than s30v but keep the wear resistance

I wish they used aeb-l with a high amount of added vanadium... and the thing is, it exists, but I never see it used

http://www.zknives.com/knives/steels/1.4153.shtml
or
http://www.zknives.com/knives/steels/1.2391.shtml
or
http://www.zknives.com/knives/steels/Bohler-Uddeholm/n678.shtml

it would be interesting if they did a pm version of this ; )

I'm totally cool with the idea of AEB-L, just never got a chance to use it on something like a fixed blade or rough use tool. I think it would be great for that.

For folders, I'm okay with S35VN, but I'd love to see where we go in the future and if I can get more toughness with the same wear resistance (nitrogen steels pls).

 

[penak]

That's interesting!

 

[Twindog]

I'm totally cool with the idea of AEB-L, just never got a chance to use it on something like a fixed blade or rough use tool. I think it would be great for that.

For folders, I'm okay with S35VN, but I'd love to see where we go in the future and if I can get more toughness with the same wear resistance (nitrogen steels pls).

Try Vanax SuperClean. It will hold an edge a lot better than AEB-L, it's almost as tough and it's more stain resistance. Plus, it's fine grained and easy to put on a keen edge.

 

[marrenmiller]

Try Vanax SuperClean. It will hold an edge a lot better than AEB-L, it's almost as tough and it's more stain resistance. Plus, it's fine grained and easy to put on a keen edge.

That's what I'm talking about. Thanks!

 

[Code of The West Survival]

Nice one, once again.

I think I'll stick with lower wear steels, as I already hate reprofiling M390. I'd love to get some more options for stainless steels with more toughness, as chipping is the number one problem I have with stainless super steels.

I was in contact with Bohler and made a video about M398.
It is a great steel along with M390.

 

[Code of The West Survival]

same technique as Denis Frolov

Well... According to Bohler and many others... It is a sin to hammer and forge a powder steel. Simply because it has a different structure. Knives should be made from sheets, not from bars.
Logically, I do not want to argue with blacksmith techniques. I am just an user, not maker of different knives.
I am just repeating what steel makers saying forever since Elmax days...

I have few M390 forged knives... It cannot be compared to my factory made knives (from sheets).
My understanding is that the same rule applies to M398 as well.

 

[Code of The West Survival]

C - 2.7%, Cr - 20%, Mo - 1%, V - 7.2%, W - 0.7%, S - 0.5i%, Mn - 0.5%

-some notes from random Russian forum posts... take with a grain of salt.
So far, this steel is only in diameters 35.8 and 38
Rounding up, 74euro per kg
Rolling is not an option, they write that during cold rolling is prone to cracking.​

-Denis Frolov has some m398 roundbar stock. check out his instagram
https://www.instagram.com/yanhook151984/​

-Link to the pdf converted to English using an online translator.
https://www.scribd.com/document/407854724/Bohler-M398-Ru-en​

-The original russian pdf link from Bohler.
http://www.bohlernn.ru/media/Bohler_M398.pdf
​

Found a few vids too, but i dont know russian.

The first bars were delivered in April to the buyers that bought M398 long time ago. New deliveries are scheduled for this Summer (second half).
Kizlyar Supreme is working hard to get some sheets, so they can make some knives. Actually, Kizlyar Supreme holds a certificate of authenticity as true Bohler Uddeholm steel knife maker. It is the really high chance that they will be the first ones who will get M398 in sheets.
A little Joe... not likely will have M398 steel yet. It is impossible. Unless they steal that from the freight ...