Bakin ƙarfe mai ƙarfi kamar duplex wani tsari ne na austenite da ferrite wanda ya inganta ƙarfi fiye da ƙarfe ferritic da austenitic. Babban bambanci shine super duplex yana da mafi girman abun ciki na molybdenum da chromium wanda ke ba kayan ƙarin juriya ga tsatsa. Super duplex yana da fa'idodi iri ɗaya da na takwarorinsa - yana da ƙarancin farashin samarwa idan aka kwatanta da irin waɗannan matakan ferritic da austenitic kuma saboda ƙaruwar ƙarfin kayan, a lokuta da yawa wannan yana ba wa mai siye zaɓi na siyan ƙananan kauri ba tare da buƙatar yin sulhu akan inganci da aiki ba.

Siffofi:
1. Kyakkyawan juriya ga tsatsa da tsatsa a cikin ruwan teku da sauran muhallin da ke ɗauke da chloride, tare da zafin rami mai mahimmanci wanda ya wuce 50°C
2. Kyakkyawan sassauci da ƙarfin tasiri a yanayin zafi na yanayi da kuma yanayin zafi na ƙasa da sifili
3. Babban juriya ga gogewa, zaizayar ƙasa da kuma zaizayar cavitation
4. Kyakkyawan juriya ga tsatsagewar tsatsa a cikin muhallin da ke ɗauke da chloride
5. Amincewa da ASME don aikace-aikacen tasoshin matsin lamba