texaseyes:
Unless Cold Steel has changed its policy, factory seconds are American made blades of Carbon V steel. All Aus-8 blades are made in Japan, hence the reason stainless seconds were/are not available. I searched my records and here is the chemical analysis of Carbon V steel.
Carbon: .96%; Chromium: .48%; Vanadium: .20%; Nickel: .05%; Molybdenum: .04%; Manganese: .46%; Silicon: .16%.
I have it classified -- Joel forgive me -- as similar to O-1, 50100-B, O-2, and 5200. I'm not saying the chemistry is the same. I'm saying the end result is similar.
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I own three factory second Master Hunters. As has been discussed in other threads, the steel is more corrosion resistant than it should be -- on paper. Blades discolor fairly easily. But the discoloration just seems to give the blades personality. I do not treat blades with any rust preventive, or wax, or PAM, or anything. I keep them clean, and when I think about it, I strop them against my pant leg.
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I think you will be happy with the knife when you use it.