CPM MagnaCut – The Next Breakthrough in Knife Steel

I am curious, did this steel shave hair any difference? I love these posts and learn so much.
 
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Freedom Pullo said:
There is nothing on the blade except for some discoloration, no pitting. I carved a Turkey (dry rub) and let it sit on a cutting board for about an hour before washing it off. Blade is 62-63 HRC by Peters’ according to the maker, Case Draughn.
https://imgur.com/a/4CVNllZ
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I'm the maker of this knife. As to why there's patina, I don't know. And slight correction, these were HT'd by Jarod Todd. The previous batch was done by Peter's. I actually had Jarod redo some of the ones from Peter's. I had Jarod do rough grit flat grinding as well and since then they've been sitting in my garage in the Mississippi humidity without issue. The steel was sourced from both Pop's Knife Supply and SB Specialty Metals

I wet-grind the bevels and polish to about 400 grit then a fine surface conditioning belt. So the finish is not particularly coarse and the HT should be preserved
 
Freedom Pullo said:
There is nothing on the blade except for some discoloration, no pitting. I carved a Turkey (dry rub) and let it sit on a cutting board for about an hour before washing it off. Blade is 62-63 HRC by Peters’ according to the maker, Case Draughn.
https://imgur.com/a/4CVNllZ
Click to expand...

Have you tried wiping it with an alcohol wipe or hand sanitizer? I have a couple stainless blades that will look like that after use and are back to looking fresh after I wipe them with alcohol.
 
Very odd, I've been using MagnaCut in the kitchen extensively and no corrosion of any kind at all. I've never left a knife dirty in the sink for an hour though, but I've left it covered in pickle juice through the duration of preparing dinner so maybe 30-40 minutes.

Also cut lots of pineapple and lemon.
 
Haven't followed this steel too much, so I've only been looking at some different charts, etc. Is everyone excited for this steel because it's a great all around steel? So has above average toughness, good edge retention and great corrosion resistance? I'm trying to think of the type of knives it would really excel in use. I have a lot of folders in M390/C20V. I've never chipped or damaged those edges, but the Magnacut may excel at being a tougher use knife? Corrosion resistance seems about the same. Edge retention seems a little lower, closer to S35V and Elmax.
 
tokerblue said:
Haven't followed this steel too much, so I've only been looking at some different charts, etc. Is everyone excited for this steel because it's a great all around steel? So has above average toughness, good edge retention and great corrosion resistance? I'm trying to think of the type of knives it would really excel in use. I have a lot of folders in M390/C20V. I've never chipped or damaged those edges, but the Magnacut may excel at being a tougher use knife? Corrosion resistance seems about the same. Edge retention seems a little lower, closer to S35V and Elmax.
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Yes great all around steel, so it can excel in many applications. For example, it could replace blades of your folders and allow you to sharpen to more acute angles without chipping. You haven't chipped your edges and if the MagnaCut blade had exactly the same geometry as your folder blades you would probably not see a difference. On the other hand if you tried to optimize geometry to steel, you could see the difference from switching to MagnaCut. Another example is kitchen knives, MagnaCut is great for creating thin edges that can still be hard yet not chip and as a bonus not be affected by acidic foods. Outdoor knives too, you get good wear resistance and good toughness together with very good corrosion resistance. Basically, there are steels that are tougher, or more wear resistant or more corrosion resistant, but there is no steel that is as well balanced on all 3 axis. In addition because MagnaCut is so fine grained it seems to be relatively easy to sharpen and work with.
 
Average 62.6 rockwell per Sal on the mule. I ordered 2, one to abuse for personal testing and one to treat normal. I figured they would make them about that hardness, it makes sense to have the middle of the road for a promoted “well balanced steel” between 60 and 65. It will be tougher but not max out edge retention. I would rather have the toughness so I am glad for that.
 
I’m to the point that I’ve been selling knives to wait for magnacut releases. Crucible is comparing it to 4v but way more stainless. If it acts anything like 4v / cruwear I’ll be excited
 
Popsickle said:
I’m to the point that I’ve been selling knives to wait for magnacut releases. Crucible is comparing it to 4v but way more stainless. If it acts anything like 4v / cruwear I’ll be excited
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Larrin talks about 4V as part of the target properties in designing MagnaCut.

I previously shared a video in this thread (a page or two ago) that tested a custom knife in MagnaCut at 63.5 HRC. The tester compares it with 4V and M4. The take-away seems to be that if you want that sort of performance in a stainless steel, MagnaCut is the way to go.

As far as being stainless, Spyderco recently announced that they've found it resistant enough for use in their Salt series.
 
POCEH KOCEB said:
Tbe new Pasific Salt and l think the yellow handle Native are done with Magnacut per Spyderco's catalogue. If Mcut performs as M4 but being SS, l'll be very intersted too...
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I’m not quite interested in those models. Awaiting other spydercos as well as knives from other makers/companies
 
I’d personally like to see any of the Manix, pm2, Endura or Police flavors in Magnacut.
‘Never had Pacific Salt and also never being interested of those but Native I’d try :thumbsup:
 
Popsickle said:
I’m not quite interested in those models. Awaiting other spydercos as well as knives from other makers/companies
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I'm in the same boat. Unfortunately, I'm not big on back locks. The Dragonfly and Rockjumper work for me but the action on a lot of back-lock Spydercos just isn't right for my hands. So I'm more interested in knives like the Military, Sage 5, and Kapara.
 
"Stainless steel" is like "natural gas". Neither of them are a good description of what they actually are. You can't expect something to never rust because it's called stainless steel. Even galvanized bolts are just putting off the inevitable in the War on Rust, without proper maintenance. There are all kinds of grades of stainless steel and salty brine has never been very kind to any of them. What you're getting from stainless steel is varying degrees of corrosion resistance depending on the type of steel, but unless you're storing your knife in an argon filled capsule it's eventually going to know the feel of rust. if it's not taken care of. Unless my knives are out in use or on rotation, they're in closed drawers along with some desiccant packs.
 
POCEH KOCEB said:
Tbe new Pasific Salt and l think the yellow handle Native are done with Magnacut per Spyderco's catalogue. If Mcut performs as M4 but being SS, l'll be very intersted too...
Click to expand...
I only see the native 5 salt in Magnacut. The Pacific Salts still show LC200N/H1. A Pacific Salt in Magnacut would be my grail knife though.
 
Wharn said:
I only see the native 5 salt in Magnacut. The Pacific Salts still show LC200N/H1. A Pacific Salt in Magnacut would be my grail knife though.
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You are actually correct, I don't remember where I saw it, I think it was in one of the IG threads I'm following, but obviously I'm under wrong impression that they had the actual
Salt model in Magnacut. I guess I didn't realize it is SALT NATIVE, personally never knew the Native had a Salt release...

However, if you look at page 70 in their catalogue, on the picture with the actual Salt serrated knife, the drop of water hides the steel description on the blade, but seems to me that it starts with M... ?

catalog.spyderco.com

2022 Spyderco Product Guide—Page 74

® Corrosion is the nemesis of all cutting tools—particularly those designed specifically for use in and around the water. Spyderco’s remarkable Salt Series
catalog.spyderco.com catalog.spyderco.com
 
POCEH KOCEB said:
You are actually correct, I don't remember where I saw it, I think it was in one of the IG threads I'm following, but obviously I'm under wrong impression that they had the actual
Salt model in Magnacut. I guess I didn't realize it is SALT NATIVE, personally never knew the Native had a Salt release...

However, if you look at page 70 in their catalogue, on the picture with the actual Salt serrated knife, the drop of water hides the steel description on the blade, but seems to me that it starts with M... ?

catalog.spyderco.com

2022 Spyderco Product Guide—Page 74

® Corrosion is the nemesis of all cutting tools—particularly those designed specifically for use in and around the water. Spyderco’s remarkable Salt Series
catalog.spyderco.com catalog.spyderco.com
Click to expand...
That’s a Salt 2 with H1 blade. You can see the larger “H1” logo on the blade.
 
Holy cow, I didn’t look closely enough to see the Native Salt will be in MagnaCut! I’ll definitely need one of those.
 
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