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Die Cast & Forging Steels DH31-EX Characteristics: Tempering hardness Quenching temp: 1030°C   T.P. size: 10H x 10W x 15L   Toughness Quenching temp: 1030°C x 30min. --> 150 Dia. Bar, AC   T.P. size: L    Softening resistance Holding temp.: 600°C Quenching temp: 1030°C x 30min. --> 150 Dia. Bar, AC T.P. size: 10H x 10W x 15L    Elevated temperature tensile properties T.P. size: Ø 8 x 40L Heat check resistance          Heat check resistance is further improved by increasing hardness without deteriorating toughness.  An example to improve heat check resistance (200mmm thickness air cool quenched die)          <Test procedures> Specimen: 15mm   I/Heating: 20<-> 700C   Number of cycles: 1000 times Erosion resistance Creep properties 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