superduplex

English

Etymology

From super- +‎ duplex.

Adjective

superduplex (not comparable)

1. (metallurgy) Of stainless steel: having a duplex structure (containing austenite and ferrite in roughly equal proportions) and also having unusually high hardness, strength or corrosion resistance.
   • 2008, Hans Berns, Werner Theisen, translated by Gillian Scheibelein, Ferrous Materials: Steel and Cast Iron, Berlin, London: Springer, →ISBN, page 324:

     Tungsten reinforces the effect of Mo, so that superduplex steel X2CrNiMoCuWN25-7-4 with 0.25% N, 0.8% W and 0.8% Cu reaches PREN > 40.