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Die Cast & Forging Steels DH31-EX The Concept of Development: DH31-EX is a hot working die steel with the best balance of strength and toughness showing the comparable softening resistance to SKD7 and twice hardenability as that of SKD61.  www.daido.co.jp  IMPORTANT NOTE Please be advised that Daido Steel shall not be held responsible for damage caused by misunderstanding or improper use of the technical information contained in this Web site. The contents of this Web site may be subject to change without notice. Please inquire of related department for the latest information. No portion of this Web site may be reproduced without express permission of Daido steel.

DH31-EX Overview Chemical Composition Concept of Development Hardenability Characteristics Surface Hardening Properties Machinability Heat Treat Repair Welding Conditions Physical Properties Testimonials Technical Center Sustainability