CPM MagnaCut – The Next Breakthrough in Knife Steel

[Currawong]

A couple of people on bladeforums have already mentioned this new steel, but no thread that I can see. Exciting stuff!! Invented by Larrin

https://knifesteelnerds.com/2021/03/25/cpm-magnacut/

"CPM MagnaCut is the result of my passion for knives and steel. I used a new approach to stainless tool steel design to eliminate chromium carbides from the microstructure. This led to a combination of properties which is better than previous stainless knife steels, and has similar toughness and edge retention to non-stainless steels like CPM-CruWear, CPM-4V, and Vanadis 4 Extra. The corrosion resistance was also excellent, even better than I was expecting, which means that the hardness-corrosion resistance balance of MagnaCut is very impressive, with achievable hardness being 64+ Rc and corrosion resistance being even better than steels like S110V, S45VN, and M390. The recommended heat treatment is 2050°F austenitize and 350°F temper, and a cold treatment after the quench means somewhat higher hardness. The steel has limited availability from Niagara Specialty Metals which will expand in the coming months."

@DeadboxHero

Edit: second video posted by Shawn in this post.
Big Chris video posted by @dirc in this post.

(10 August 2021) Comprehensive review of Magnacut (Creely Blades 'Mako') by Cedric & Ada:

 

[Blues]

Impressive...Like stainless CPM Cru-Wear. What's not to like?

Kudos, gents. Excellent work.

 

[ktataragasi]

It's great to see a new steel made for knives and not just an adaptation from other industries. Now we just need knife manufacturers to grind their knives thin and we would be good to go.

 

[XL883N]

Can't wait for my PM2 sprint run. Lol

 

[unwisefool]

Very cool and congrats Larrin !

 

[Larrin]

Thanks for sharing the link. I’m very happy with how the steel turned out. I personally think it’s a game changer.

 

[Londinium Armoury]

I see Shawn got his hands on some pretty quick, nice one Larrin, good job.

 

[Silent H]

Wow! I hadn't seen this yet. I've been waiting for Larrin to make a steel, based on all his experience and knowledge, i knew it would be great. If this is even half as good as it sounds, it'll be a game changer. I can't wait to pick up a knife with this steel. I hope it's not too hard to sharpen, but then again, it may never need to be!

 

[Bolstermanic]

It will be difficult to wait for Larrinite to be available in sufficient quantities, but my goodness, are we living in the golden age of stainless steel or what? Thanks, Larrin, for figuring out how to get the chromium to stay IN the matrix and OUT of the carbides! Quite a trick...

 

[jstn]

This is truly very exciting. Thank you to Larson for your hard work and sharing the fruits of it with the knife community. I can’t wait to get my hands on some of this stuff!

 

[whp]

I look forward to seeing how this works out.

 

[Richard338]

This is a great win for the little guy to succeed in getting it made.
Larrin this seems to be an outlier steel compared with other stainless steels. Is there any room for significant improvement over the non stainless steels if you abandoned any priority for corrosion resistance?

 

[Natlek]

A couple of people on bladeforums have already mentioned this new steel, but no thread that I can see. Exciting stuff!! Invented by Larrin

https://knifesteelnerds.com/2021/03/25/cpm-magnacut/

"CPM MagnaCut is the result of my passion for knives and steel. I used a new approach to stainless tool steel design to eliminate chromium carbides from the microstructure. This led to a combination of properties which is better than previous stainless knife steels, and has similar toughness and edge retention to non-stainless steels like CPM-CruWear, CPM-4V, and Vanadis 4 Extra. The corrosion resistance was also excellent, even better than I was expecting, which means that the hardness-corrosion resistance balance of MagnaCut is very impressive, with achievable hardness being 64+ Rc and corrosion resistance being even better than steels like S110V, S45VN, and M390. The recommended heat treatment is 2050°F austenitize and 350°F temper, and a cold treatment after the quench means somewhat higher hardness. The steel has limited availability from Niagara Specialty Metals which will expand in the coming months."

@DeadboxHero

Seems that Esee-6 is much thicker behind edge then other knife ? Esse-6 cut the nail after 46 hammer blows . Other knife cut nail after 80 hammer blows ??

 

[ace]

I want spydiechef in magnacut around 63. I really like the design and it is fine with the blade it has, but would be better harder. Magnacut is perfect for it.

 

[JR42]

I really like the nod to Vasco with the name and artwork, and would totally buy a t-shirt or three with that artwork on it. I'm also really looking forward to user reports on this steel.

 

[Chronovore]

So now who goes and twists an arm at Spyderco to get a Sage 5 made in this steel?

 

[steelhead seeker]

So now who goes and twists an arm at Spyderco to get a Sage 5 made in this steel?

No need. Im sure they will do it on their own. They will also be sure to only let one dealer have rights to it and be sure to do it in small enough batches so they can jack the price up since the demand will be there and then only the flippers will really benefit.

 

[JR42]

Is someone bitter and confused about how exclusives work?

 

[knarfeng]

The performance of the steel is impressive.
The knowledge, insight, and dedication to reach the goal, even more so.
Very much congratulations.

 

[000Robert]

Congratulations, Larrin! Maybe some day I'll get a CPK in CPM-MagnaCut.