The 60:50 ratio of austenite and ferritic material in the microstrcuture of the stainless steel alloy is what separates the Duplex steel alloy from Stainless steel alloy. When it comes to durability the Duplex steel alloy can be hardened by heat treating it, but not without inversely affects it ductility and ability to be welded with other components in differing area of application. Inclusion of additive metals like chromium and molybdenum adds to the overall resistance of the alloy against corrosion and abrasion. They are very durable and have a strength ratio that is three time stronger then most other stainless steel alloys.
The Buttweld fittings are forged to be very durable while having a semi hardened structure, capable of being forged into varying forms as needed for application. The fittings comes in variances of different duplex steel alloy like lean duplex, standard duplex,super duplex, and hyper duplex grades. These grades affect the machining and forging process of the fittings, by varying in quantities of constituent and additive metals. Also the Duplex Steel Buttweld Fittings are forged in angled forms at different degrees of angles and can sustain pressure changes and high temperature actively.