MnA High Efficiency Forged Steel BallSize: 25mm-150mmHardness: surface hardness for dia25-90mm is HRC55-63, for dia100-150mm is HRC55-63.Core hardness for dia25-90mm is HRC48-55,for dia100-150mm is HRC45-53.Chemical elements:C: 0.72-0.92, S: 0.04MAX, Mn:...
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