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Thread: Metallurgy: Any Metallurgists Here?

  1. #1
    usdiver's Avatar
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    Default Metallurgy: Any Metallurgists Here?

    I m looking to speak to someone regarding 17-4 ph stainless as well as Elmax, knife blade applications and also 401 stainless steel if possible but the 17-4 is on the front burner

    Mirror polishing experience would be appreciated but not necessary
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  2. #2
    Flashaholic
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    Default Re: Metallurgy: Any Metallurgists Here?

    My instructor made some knives from 17-4. Fixed blade, Scandi ground survival style knives. He said the edge stayed sharp. That was my biggest concern. He hasnít made very many but I guess they work well.

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    Default Re: Metallurgy: Any Metallurgists Here?

    I m looking at removing stonewashed finish, sanding it down a hair to shine up the surface, then getting it DLC coated or trying to do a mirror finish... and cryogenic treatment is a thought also but would be the last step if done at all
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  4. #4
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    Default Re: Metallurgy: Any Metallurgists Here?

    Look at jayfisher .com or ask on bladeforums for cryogenic help. Super helpful community there.

    As far as removing the stonewash thatís the easy answer. Start with a 220 or less grit paper and work your way up to 2000.

    Check the valleys and scratch pattern with around a 600 grit to see how rough you will actually need.

    Why do you want to remove the stone wash if I may ask? Itís a fantastic finish on any knife.
    hunter, fisherman, flashlight enthusiast

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    Default Re: Metallurgy: Any Metallurgists Here?

    Thanks bugburly and sorry for the very late reply... missed this one.
    The stone wash is on a OTF comb blade and my intention is to slick it up and have it DLCíd. The stonewash isnít deep and it would better in all Tactical black. Plus there is still a bit of friction inside and I m trying to eliminate as much as I can and use less oil. The steel is 17-4 PH which typically doesnít respond well to cryo treatment but in this case should be ok.
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  6. #6
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    Default Re: Metallurgy: Any Metallurgists Here?

    If itís just a comb does it really need to be cryoíd?

  7. #7
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    Default Re: Metallurgy: Any Metallurgists Here?

    Doesnít need to be and I may decide against it but the DLC coating should reduce some friction and the cryo treatment I m thinking may help also. Both would certainly help against any corrosion and aging over time... over engineering yes but helpful? Donít know
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