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    SG2/R2

    Developed by Takefu Special Steel, the Super Gold 2 (SG2) is a high-end powdered tool steel alloy designed for blade making. It's also one of the most popular high-end powder steel, capable of being treated to a hardness of 64 HRC. Kobelco Steel's R2 steel is believed to be exactly the same steel as SG2, therefore the names are used interchangeably.