Duplex SteelJune 21, 2023Duplex Steel Specifications Range : 0.1 mm to 100 mm thick upto 2500 mm width & upto 8000 mm length available with NACE MR 01-75s. Duplex Steel : ASTM / ASME SA 240 UNS NO. S 31803 , S 32205 , S 32550 , S 32750 , S 32760.