ZERON 100

Zeron® 100 stands out for its extraordinary ability to resist corrosion and erosion in a wide range of aggressive environments. The special Cu+W combination significantly improves resistance to sulfuric and hydrochloric acids, compared to similar alloys without such additives. Thanks to its high resistance to pitting and stress corrosion cracking, Zeron® 100 is widely used in offshore applications, especially in seawater contexts. This material also offers excellent resistance to caustic alkalis and phosphoric acid. Its service temperature range generally varies between -50 °C and 280 °C, with the upper limit due to thermal instability (450 °C and sigma phase embrittlement). Zeron® 100 is highly valued in the oil and gas production sector and is used in a wide range of applications, including process piping, risers, manifolds, pressure vessels, valves, pumps, desalination plants, flue gas desulfurization (FGD) systems, and in the mining, chemical, and pharmaceutical industries. Furthermore, Zeron® 100 wires are ideal for joining supermartensitic stainless steels.

25%Cr ferritic-austenitic superduplex stainless steels matching the proprietary Zeron® 100 alloy.

Austenite-ferrite duplex microstructure in AW or solution annealed condition with an approximate 30- 60% ferrite level, depending on heat cycle conditions.

• EN W.Nr.: 1.4508, 1.4501, 1.4469
• ASTM: A890 6A, A182 F55, A890 5A
• UNS: S32760, J93380, S32750, S32550, S32520, S39274, S32950, J93404
• PROPRIETARY: Zeron 100 (Rolled Alloys) DP3W (Nippon Steel Corporation), 7-Mo Plus (Carpenter), SAF 2507 (Sandvik)

For welding Zeron® 100, preheating is generally not required. The interpass temperature should not exceed 150 °C. A heat input between 1.0 and 2.0 kJ/mm (based on the material thickness) is considered optimal, though many industrial codes set a maximum limit of 1.5 or 1.75 kJ/mm. While welds in wrought duplex stainless steels are usually left as is, major repairs on castings often require a solution treatment. Field tests confirm that good properties are obtained by following a water quench treatment at 1120 °C for a period between 3 and 6 hours.