Fox Cutlery (Italy) N690Co-Colbalt Enhanced Stainless Steel

These steel is nothing special, you have much better steel in America (440 A for exampe).
 
cabala said:
These steel is nothing special, you have much better steel in America (440 A for exampe).
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Not true.

N690 is an excellent cutlery steel with performance on the order of 154CM and VG10. It is far superior to 440A in edge retention.
 
knarfeng said:
Not true.

N690 is an excellent cutlery steel with performance on the order of 154CM and VG10. It is far superior to 440A in edge retention.
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It depends.
I sharpened Extrema ratio folder on Lansky that it can really shave, and probably good holds edge, but when it become dull you will first get old then resharpen it.
440A is far more easier to resharpen witch is much better in a field. Hard steels are good if you can resharpen it on machine and even than you can do same with 440A much easier.
 
What's difficult about sharpening harder steels in the field? DMT makes many portable diamond sharpeners that make quick work of any steel I know of, including ZDP189. Also works well on axes, shovels, kuhkuris etc.
 
cabala said:
It depends.
I sharpened Extrema ratio folder on Lansky that it can really shave, and probably good holds edge, but when it become dull you will first get old then resharpen it.
440A is far more easier to resharpen witch is much better in a field. Hard steels are good if you can resharpen it on machine and even than you can do same with 440A much easier.
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I understand your point. You consider ease of resharpening to be a major factor in selecting an alloy.

It is true that 440A is easier to resharpen than any stainless alloy with 1% Carbon. But my experience has been that I can touch up most 1% Carbon alloys in the field if necessary. (D2 and S30V I am not sure about and I have not yet tried to field sharpen either of those.)

Once a blade of 1% Carbon alloy steel has been beveled to a desired angle, just touching up the edge is not difficult and should not require any special equipment beyond a piece of sharpening ceramic. For me, the issue occurs if you want to try to change the bevel angle in the field.

I also think that part of your negative experience with N690 is that you had an Extreme Ratio blade. Those are THICK. So sharpening requires the removal of a lot more steel. You might have had troubles with an Extreme Ratio even if that blade had been 440A.
 
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