Development of injection material gear steel


The performance indexes of newly developed steel are better: the Charpy impact value is 7.5J/cm2 for the original steel and 13.4J/cm2 for the newly developed steel; the bending strength is 153N/mm2 and 264N/mm2 respectively; the fatigue limit is 666N/mm2 and 696N/mm2; the 107h strength of