High-temperature strength and toughness are achieved at a high level.

• QDH is a hot working die steel that combines high temperature strength equivalent to SKD7 and toughness on a par with SKD61 as well as hardenability.
• By possessing perfectly balanced characteristics in terms of high temperature strength and toughness, QDH contributes to the extension of die life through reducing metal fatigue, wear and cracks.

QDH (QD-Hot) greatly improves die service life and contributes to increased productivity and product cost reduction.

• As compared with the typical general purpose steel SKD61 (JIS steel), QDH(QD-Hot) is equipped with high-temperature strength and toughness that serves as an index, respectively, of deformation and wear of dies and difficulty to crack in a well-balanced manner and also provides an outstanding fatigue strength. The material can greatly improve the tool service life.
• In particular, applying QDH (QD-Hot) to hot forging dies or die-casting dies used under extremely severe conditions is expected to achieve a high service life improvement effect.

Hot/Warm forging dies, Casting Dies, extrusion dies, etc.