superduplex
adjEtymology From super- + duplex.
1
Engineering, Metallurgy, Natural sciences, Physical sciences 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.
- 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 > 40.2008, Hans Berns, Werner Theisen, translated by Gillian Scheibelein, Ferrous Materials: Steel and Cast Iron, Berlin; London: Springer, →ISBN, page 324: