ZERON 100

Zeron® 100 excels in strength and in corrosion and erosion resistance, proving effective in aggressive environments. The Cu+W addition enhances resistance to sulphuric and hydrochloric acids, surpassing alloys without these elements. Notable for its offshore use, it resists pitting and stress-corrosion cracking in seawater and withstands caustic alkalis and phosphoric acid. Its service temperature range is typically -50°C to 280°C, with factors like thermal instability (450°C) and sigma embrittlement influencing the upper limit. Widely applied in oil and gas, it serves in pipework, risers, manifolds, pressure vessels, valves, pumps, desalination plants, and FGD systems. Versatile across mining, chemical, and pharmaceutical industries, Zeron® 100 wires are employed for joining supermartensitic stainless steels, showcasing adaptability across various industrial applications.

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).

Preheating is typically unnecessary. Maintain interpass temperature below 150°C. Acceptable heat input falls within the range of 1.0–2.0 kJ/mm, contingent on material thickness; however, many codes impose a maximum limit of 1.5 or 1.75 kJ/mm. While welds in wrought duplex stainless steels are typically preserved in the as-welded state, significant repairs to castings are commonly mandated in the solution-treated condition. Empirical evidence suggests favorable properties following treatment at 1120°C for 3-6 hours, followed by water quenching.