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Thread: R2 and SG-2 steel

  1. #1
    Senior Member cclin's Avatar
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    R2 and SG-2 steel

    I read a lot of posts on KKF regarding R2 steel and lots of people like R2 but don't really know what R2 steel is made of. many members believe R2 is the best steel they've used and think R2 steel is better than SG-2 steel. I want to share my R2 knife shopping experience.
    As I started shopping/research for a R2 knife few months ago, During my research, I found Takamura gyuto was listed as R2 steel in the Japan/European market, but listed as a SG2 steel in the US market.So, I e-mail some Japan knife vender regarding my R2/SG2 question, the replies were not definite and they thinks R2 and SG2 are very similar steel. moreover, A friend of my asked Mr. Itou the same question for me at Knife Show in Seki City. Mr. Itou confirm R2/SG2 steels are the same, but his R2 knife is better than Shun's sg2 knives because his hand hammer forging & heat treated process!
    I also e-mailed Koki about the same issue and he in turn asked some knife maker and steel manufacturers for me. this is reply e-mail below for further reference.

    [I]"Dear Charles

    Thank you very much for your new inquiry and interest.

    You are currently interested in R-2 and SG-2 steel kitchen knives.

    R-2 Powdered High Speed Tool Steel Material is made by one of most famous and big steel company "Kobelco". "Kobelco steel company" makes this steel and supply this steel to market.

    We also heard "Kobelco Steel Company" also supply R-2 Steel to the another steel company "Takefu Steel Company". And "Takefu Steel company" supply that steel under different name "SG-2 (Super Gold #2)" to the knife makers.

    It seem both steels are same, but has different name because of above.

    If you will have any questions, please let us know and help.

    Thank you very much again for your new inquiry and interest.

    Best Regards

    Koki Iwahara
    JapaneseChefsKnife.Com"
    [/I]


    in conclusion, I think R2 and SG-2 are same steel! I hope this will help
    Charles ***[All statements I made here only my personal opinion and nothing more!]*** & Please bare with me for my crappy English!!

  2. #2
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    sachem allison's Avatar
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    well, there you go.
    I haven't lived the life I wanted, just the lives I needed too at the time.

  3. #3
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    That explains a lot, I was looking at the differences between two blazen knives - ryusen and takamura, using sg2 and r2 respectively, I'm not 100% sure but I think that they were just badged differently for different markets.

  4. #4
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    In Gators' steel analyzer graph over at zknives, the two steels look quite different, most notably with R2 being 17% - 19% tungsten, and SG-2 being tungsten free.

  5. #5
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    El Pescador's Avatar
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    Not buying it.

    We do know that SG2 is powdered VG10. R2 was a supposedly a proprietary blend developed by Mr Itou with Kobe Steel with a composition more in line with Cowry X or ZDP189. In my research I found a post that claims R2 has a good amount of Tungsten, while we know that SG2 has none. I know that Tanaka replaced r2 with SG2 in his high end knives. If there isn't a difference in steel, why claim a change at all?

    I'd like to hear from someone who has used both a Tanaka R2 and a SG2 knife.
    "So you want to be a vegetarian? Hitler was a vegetarian and look at how he turned out."

  6. #6
    Senior Member EdipisReks's Avatar
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    Quote Originally Posted by El Pescador View Post
    We do know that SG2 is powdered VG10.
    do we?

  7. #7
    Engorged Member
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    here is a good thread from the other board regarding this discussion:

    http://www.knifeforums.com/forums/sh...hp?tid/861586/

    In the thread Gator also states that he believe the composition of the two steels to be different.
    "So you want to be a vegetarian? Hitler was a vegetarian and look at how he turned out."

  8. #8
    Senior Member EdipisReks's Avatar
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    vg-10 and sg-2 seem fairly different.

  9. #9
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    Quote Originally Posted by EdipisReks View Post
    vg-10 and sg-2 seem fairly different.
    Very different. I stand corrected.
    "So you want to be a vegetarian? Hitler was a vegetarian and look at how he turned out."

  10. #10
    Senior Member EdipisReks's Avatar
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    the R2 steels certainly seem to be in the same hardness range as SG-2, assuming the available information is correct.

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