OK Autrod 318Si

OK Autrod 318Si is a continuous solid corrosion‑resisting stabilized chromium‑nickel‑molybdenum MIG/TIG filler wire designed for Cr‑Ni‑Mo and Cr‑Ni steels. It offers good general corrosion resistance and is stabilized with niobium for improved intergranular corrosion resistance up to service temperatures of 400 °C.

Key Features

• Stabilized with niobium for intergranular corrosion resistance
• High silicon content for better wetting and welding properties
• Suitable for Cr‑Ni‑Mo and Cr‑Ni stabilized or non‑stabilized steels
• Service temperature capability up to 400 °C

Specifications

• Alloy Type: Austenitic (≈7 % ferrite) 19 % Cr – 12 % Ni – 3 % Mo – Nb
• Shielding Gas: M12, M13 (EN ISO 14175)
• Tensile Yield Strength (As Welded): 460 MPa
• Tensile Strength (As Welded): 615 MPa
• Elongation (As Welded): 35 %
• Charpy Impact (20 °C): 100 J; (-60 °C): 70 J
• Typical Wire Composition (%): C 0.04, Mn 1.4, Si 0.72, S 0.009, P 0.017, Ni 11.8, Cr 18.9, Mo 2.6, Cu 0.2, Nb 0.66
• Deposition Data (1.0 mm): 80‑240 A, 15‑28 V, 4.0‑16.0 m/min, 1.5‑6.0 kg/h

Applications

• Welding of stainless steel and corrosion‑resistant steel components
• High‑temperature service up to 400 °C
• Industries such as chemical processing, power generation, and marine applications