Manufacturing Industry
Chromium-moly-boron steel is case-hardenable, forgeable.(METALS)
Advanced Materials & Processes, May, 2003
A chromium-molybdenum-boron case hardening steel with superior cold forgeability has been developed for automotive differential gears by Daido Steel Co. Ltd. and Nissan Motor Co. Ltd., Japan. The steel was described in "Development of High Impact Strength Case Hardening Steel," a paper presented at the 2003 SAE World Congress in Detroit in March.
Researchers focused on the known toughening effect of boron on carbon steel. They investigated several steel alloys by means of Charpy impact tests, and they conducted impact fatigue tests of different gears. The addition of ...
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