- Life and Mechanical Properties of Hot Former Die for Bearing Race using P/M High Speed Steel
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Seong-Hyeon Hong, Jong-Soo Bae
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J Korean Powder Metall Inst. 2007;14(6):367-371.
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DOI: https://doi.org/10.4150/KPMI.2007.14.6.367
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 Abstract
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- P/M high speed steel (1.26% C, 4.42% Cr, 6.54% W, 4.92% Mo, 3.21 % V, 8.77% Co, bal. Fe) was applied to hot former die. It showed that the die life became 2.7 times higher than that of cast/wrought SKH 55 tool steel which is commercially used. The increase of die life was corresponding to the improved hardness and transverse rupture strength of PM high speed steel due to the finer grain and carbide as well as the uniform carbide distribution. The P/M high speed steel with the promoted die life could be an alternative to the conventional SKH55.
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