Nitrobe 77

F

Francix

Joined
Mar 20, 2018
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Hello members of the forum. Has any of you had the opportunity to test the nitrobe 77 steel. I would like to have feedback on this steel, specially in terms of toughness, what does it compare to rwl 34 (cpm 154), for which types of blades would it be a good option. Thank you everyone.
 
it's really the new frontier of steel, completely (or nearly so) replacing carbon with nitrogen. 77 does this with only 0.1% C and 0.9% N
way more stainless than even lc200n - due to almost double the Nitrogen.

the numbers for everything at this point is just raw stuff from the company: (IE, we need more people reporting and building with it ; -)
I'm fairly interested to do so myself... the perfect dive knife as I love diving/scuba/windsurfing etc

hopefully Stacey or Larrin could add more

nitrobe77a.jpg


cheers
 
Iirc nitrobe77 was discontinued in something like 2014? Alot of makers that used it liked it alot. I never got a chance to check it out.
 
ShannonSteelLabs said:
Should be interesting to see how it stacks up to vanax
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Two stees developed for completely different industries.

Vanax - Plastic mould steel
Nitrobe 77 - developed as a knife steel for the food industry where chipping was a major concern.

Both are powdered steel alloys though and purity is a big challendge.

I have had a Des Horn Imvubu in Nitrobe 77 since 2013 and tested the steel extensively. Imagine 52100 at high hardness but stainless.

It resists chipping even at extremely low edge angles (5 degrees per side). Will roll rather than chip. It is tougher than steels such as RWL-34/CPM154 etc due to its chemistry and structure once heat treated.

It is a fine grained steel and of very pure structure. To make an alloy so pure is what drives up the cost as well.

I believe the steel is not as popular as it could have been because it was during the ‘high wear resistant’ crase of the market. If a steel was not marketed as high wear resistant the market shrugged and thought it was an inverior steel. Sad really.
 
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marthinus said:
Two stees developed for completely different industries.

Vanax - Plastic mould steel
Nitrobe 77 - developed as a knife steel for the food industry where chipping was a major concern.

Both are powdered steel alloys though and purity is a big challendge.

I have had a Des Horn Imvubu in Nitrobe 77 since 2013 and tested the steel extensively. Imagine 52100 at high hardness but stainless.

It resists chipping even at extremely low edge angles (5 degrees per side). Will roll rather than chip. It is tougher than steels such as RWL-34/CPM154 etc due to its chemistry and structure once heat treated.

It is a fine grained steel and of very pure structure. To make an alloy so pure is what drives up the cost as well.

I believe the steel is not as popular as it could have been because it was during the ‘high wear resistant’ crase of the market. If a steel was not marketed as high wear resistant the market shrugged and thought it was an inverior steel. Sad really.
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That's pretty interesting I didnt know it was developed for that purpose.

I just knew that it was somewhat difficult to find and extremely expensive to use.

But to be fair vanax is also extremely expensive.
 
ShannonSteelLabs said:
That's pretty interesting I didnt know it was developed for that purpose.

I just knew that it was somewhat difficult to find and extremely expensive to use.

But to be fair vanax is also extremely expensive.
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Years ago I found Vanax and Nitrobes patents and the patents cover a wide range of chemical compositions that both companys can play with within the chemical range.

Vanax has a massive range to be honest but Nitrobe’s patent is one of the few I have ever come accross specifically stating intended for use in knives and tools in food industry.

One also has to keep on mind the push for ISO standards in the food industry, one thing it mentions is that steel used as part of the processing should not chip and corrode.

Both these alloys still fascinate me to be honest.
 
All steel patents have a range of composition so that other companies are not able to slightly tweak the composition and get around the patent. Of course some have more reasonable ranges than others.
 
Revolverrodger said:
Who will make the first Nitrobe77 chopper ?
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:D , I dont think that will be a very good idea, it is true that there are no values concernant toughness for this steel. I expect values a little higher than the CPM-154 and elmax , but I don't think it will come to the values of a 3v at 58 rc, 5160 and this kind of steels , so IMHO it will not be the best chopper.
 
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