| blackened stainless steel - 15% (7)
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| electroless nickel, NP3 (NP3 is electroless nickel plus Teflon) - 4% (2)
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| electroplating (decorative nickel or chrome) - 4% (2)
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| electroplating (hard chrome) - 13% (6)
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| heat-treatment (black nitride, Melonite, Wonder, Tennifer, etc) - 9% (4)
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| manganese or zinc phosphate (Parkerizing) - 4% (2)
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| oxide (bluing, browning, black oxide) - 23% (11)
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| paints (Cerakote,Duracoat, Aluma-Hyde II, etc) - 0% (0)
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| stainless steel (unfinished) - 23% (11)
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| Teflon/polymer & Teflon/Moly (Black-T, Roguard, Brownell's PTFE/Moly, etc) - 2% (1)
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other not named - 2% (1)
|