Wow! I remember this conversation. Hard to believe its been a decade!
Interestingly, many years ago, but many years after this thread started, I called Nicholson. They would not reveal the steel blend as they considered it a trade secret. However, when I pressed for how I should heat treat a knife made from one of their files, the gentleman stated without hesitation, that I should follow a W-2 procedure for best results.
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