Exaton 25.22.2.LMn (SAW)

Exaton 25.22.2.LMn is a manganese‑alloyed chromium‑nickel‑molybdenum filler material designed for submerged arc welding (SAW) of stainless steels, especially UNS S31050 (1.4466). It delivers excellent low‑temperature toughness for cryogenic service and high corrosion resistance in aggressive fertilizer‑plant environments.

Key Features

• Optimized for heavy‑duty SAW stainless steel welding
• Consistent wire quality with tight chemistry and dimensional tolerances
• Innovative high‑Cr and Mo chemistry for superior corrosion resistance
• Low‑moisture flux packaging in 20‑25 kg drums reduces damage and handling issues
• Enables reduced number of weld overlay layers, lowering cost and labor

Specifications

• Classifications: EN ISO 14343‑A S 25 22 2 N L, SFA/AWS A5.9 ERG, Werkstoffnummer ~ 1.4466
• Alloy type: Fully austenitic, 25 % Cr – 22 % Ni – 2.2 % Mo – low C
• Typical wire composition (wt%): C 0.001, Mn 4.6, Si 0.12, S 0.003, P 0.013, Ni 22, Cr 25, Mo 2.2, Cu 0.02, N 0.14, Nb 0.01, Co 0.03, B 0.0018, FN WRC‑92 0
• Available size: 2.4 mm × 25 kg
• Product number: S687243110

Applications

• Cryogenic stainless‑steel welds for urea process equipment (stripper tubes, bimetallic outer layers, ferrules, carbamate condensers, decomposers, reactor coils)
• Corrosive environments in fertilizer plants (nitric‑acid coolers, NPK plant heating coils, Norsk Hydro processes)
• General SAW welding of stainless‑steel and nickel alloys in demanding industrial settings