NitroV...Any Updates???

shqxk said:
I'm sure AEB-L will lose its toughness significantly going up RC62 especially as hypoeutectoid steel thus less idiot proof.
Click to expand...
While 62 Rc will have less toughness than 60 Rc, I haven’t seen any evidence to indicate that there is any sharp drop off.

With the large chromium addition, there isn’t really a eutectoid point in the same way that you are referring to. If we broaden our definition and call the transition where there is an austenite plus carbides region, AEB-L would be classified as hypereutectoid. Regardless, it is unlikely that AEB-L would be less “idiot proof” or similar in any way to low alloy hypoeutecyoid steels.
 
I will say, that in the kitchen, I prefer AEB-L at 62. Reason being is the finer edge you can get with AEB-L seems to lend itself to the kind if knife that will also benefit from a hard edge. I.E. laser like slicer.
 
Wanted to give a bit of an update since I originally asked my question. I went ahead and ordered some Nitro V and recently had it heat treated along with another batch of AEB-L. There were 160 knives total in this group when I sent them out, of the 160 there were 14 that were Nitro V. All 146 knives in AEB-L came back dead straight. Every single one of the blades in NitroV were warped, really warped... Nearly half of the blades in NitroV showed serious signs of having to be reheated/straightened due to warping. Needless to say I'm a bit disappointed in this outcome and will absolutely be steering clear of NitroV from here on out. :(

Blessings,
Joshua
 
JoshRG said:
Wanted to give a bit of an update since I originally asked my question. I went ahead and ordered some Nitro V and recently had it heat treated along with another batch of AEB-L. There were 160 knives total in this group when I sent them out, of the 160 there were 14 that were Nitro V. All 146 knives in AEB-L came back dead straight. Every single one of the blades in NitroV were warped, really warped... Nearly half of the blades in NitroV showed serious signs of having to be reheated/straightened due to warping. Needless to say I'm a bit disappointed in this outcome and will absolutely be steering clear of NitroV from here on out. :(

Blessings,
Joshua
Click to expand...
Dang what was the protocol/hardness? Who did the work? What was the stock thickness? Were they preground before heat treatment? What thickness on the grind before HT?
 
Damn thats a bummer.
Who were they sent too?
Im sending out 2 knives in nitro v today as well as some 8670 to peters.
Hoping they have the HT figured out.
 
At this point I'd rather not say who the company is but I have had probably close to 500 knives go through them and have never had issues like this in the past. Stock thickness was 0.130 +/- , the ones that were partially ground were only ground to about 60% of final dimensions. Hardness was 61/62rc and most were around 0.030+ at the edge.

Blessings,
Joshua
 
JoshRG said:
At this point I'd rather not say who the company is but I have had probably close to 500 knives go through them and have never had issues like this in the past. Stock thickness was 0.130 +/- , the ones that were partially ground were only ground to about 60% of final dimensions. Hardness was 61/62rc and most were around 0.030+ at the edge.

Blessings,
Joshua
Click to expand...
Joshua, have you contacted the company that did the HT?! I would! If you have been using them for that long, Perhaps they can reheat & straighten them with a new HT??
 
JoshRG said:
At this point I'd rather not say who the company is but I have had probably close to 500 knives go through them and have never had issues like this in the past. Stock thickness was 0.130 +/- , the ones that were partially ground were only ground to about 60% of final dimensions. Hardness was 61/62rc and most were around 0.030+ at the edge.

Blessings,
Joshua
Click to expand...
Thanks for sharing Joshua
 
Hope the HT on this gets dialed in. I was thinking it would be a good steel for a thin bolo for use in salt marsh areas.
 
My nitroV blades have warped and seem to cause problems for the heat treater also. Both professional heat treater I have used had trouble. Besides this, the steel grinds very nicely both before and after heat treat. it hand sands good too, I have not tried more than a pulled satin finish though. The edge itself gets very keen indicating a very fine grain, however I have noticed nitrov@ RC63 it is not able to support as thin an edge as AEBL @ RC62.

What in the world could be causing this warping problem? Could it be stresses in the material from the mfg process? Does the steel need to be normalized or something? It sucks having to grind out warp in an 1/.8" thick by 10" long blade. I left 1/16" at the edge and the bevels 50% ground and it was warped a bit. AEBL never has this problem. @Ed Braun
 
You must log in or register to reply here.
Back
Top