D2 v.s. BG42

Discussion in 'Shop Talk Archive' started by Box27, Apr 13, 2001.

  1. Box27


    Mar 22, 2001
    Hey guy's,I was wondering if you can help me out with a decision i need to make, i looking for opinion's which type of steel to use on a folder, 3.5'' long and 5/32'' thick, Paul Bos is doing the heat treating. It's going to be a hard user,i'm a Firefighter/Paramedic so it's going to see a lot of cutting and maybe some light prying if the need arises !!! Can you give me the Pro's and Con's of both steel's and help me make up my mind !!! Thank You,Mario C.
  2. Kevin Wilkins

    Kevin Wilkins

    Oct 7, 1998
    Hi Box, I'd suggest BG-42 hands down over D2 for the use you're talking about. D2 isn't suited to prying at RC61 and BG-42 is a better edge holder, won't rust and is a rather tough steel. You can try D2 using the lower temp curve for RC58, but I still think BG-42 would make a better knife.

    If you expect to do much prying or make twisting cuts, then the edge geometry will be very important. Maybe more important than the steel type.

    If you're going for carbon steel, you might consider M2 HSS tempered to RC 62. Depending on the cross section of your blade and the thickness, you won't break this one! M2 is very fine grained and takes a wicked edge, even on knives with a thick edge for strength.

  3. Box27


    Mar 22, 2001
    Kevin,thank you for the response and word's of wisdom and yes that make's a lot of sense,i think BG42 is what i'm going to use !!!
    Take Care, Mario C,

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