possible steels?

[sigurd]

Have you guys in REKAT considered CPM 3V or 9V as materials in your knives? The way it looks at the charts it should be alot stronger and more wear resistant than D2?
I dont know about the initial cutting ability, though..

 

[Bob Taylor]

D-2 was chosen because it offred the best of both worlds this is a super D-2 that we have researched for over a year I seems to be at least as corrsion resistant as ATS-34 with better edge rention and shock resistance.

Bob Taylor

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Some days it's not worth chewing through the restraints and escaping.

 

[sigurd]

Have you tested it against 3v in those respects?

It seems to me not from experience but from reading others posts and looking at charts that D2 is nice but that 3v would beat it in regards to edgeholding and toughness, at least.
Would be nice to read if you actually made a comparison with your modified version vs 3v though.

 

[sigurd]

Have you compared it to 3v in those 3 respects?

 

[Bob Brothers]

This is the process we go through when looking different steels. First they are put into two groups stain resident and non-stain resident. 2 Carbon content any thing below .8% carbon gets thrown out. 3 Wear resistance. 4 Toughness. 5 Can we get it in sheet some of these steels only come in rounds or billet. 6 how will this steel perform as a knife 7 Price 8 Market acceptance.
We were looking for a replacement for ATS 34. CPM 3V and CPM 9V are non stainless and were not tested. These are the steels we looked at D2 440C 440XH CRB7 154CM 440V 420V BG42 not all were tested because of price or not available in sheet form. We did use BG-42 already over two years ago and it was not accepted in the market because of the price.
Looking at the chemistries and properties chart in Crucibles book CPM 3V and CPM 9V both look like they may make good knives but nether one has enough chromium to resist corrosion, remember 13% and higher of chromium rates a steel as being stainless.
That puts these two steels with O1 L6 M2 1084 1095 W1 A2 and others all need some kind of coating to keep them from rusting. What the charts don’t tell you is wear resistance in what environment. Some non stainless steels seem to hold an edge very well. Cut large amounts of cardboard into confetti make long ropes into little pieces and go through wood like a chainsaw and still shave but lose its edge in a few cuts in a piece of meat. I have seen this first hand and talked to other blade smiths and makers that seen the same thing. What looks good on paper doesn’t all ways make a good knife.

Bob Brothers