OK Autrod 309L

OK Autrod 309L is a continuous solid corrosion‑resisting chromium‑nickel MIG/TIG wire designed for welding 23% Cr‑12% Ni stainless steels and similar alloys.

Key Features

• Austenitic alloy with approx. 9% ferrite for good corrosion resistance
• Suitable for similar steels, wrought and cast steels, buffer layers on CMn steels, and dissimilar joints
• Available in multiple diameters (0.8 mm to 1.6 mm) and packaging sizes (15 kg, 250 kg, 350 kg)
• Classified to EN ISO 14343‑A and SFA/AWS A5.9 ER309L

Specifications

• Alloy Type: Austenitic (≈9 % ferrite) 24 % Cr – 13 % Ni – Low C
• Shielding Gas: M12, M13 (EN ISO 14175)
• Yield Strength (As Welded): 440 MPa
• Tensile Strength (As Welded): 600 MPa
• Elongation: 32 %
• Charpy Impact (As Welded): 160 J @ 20 °C, 130 J @ –60 °C, 90 J @ –110 °C
• Typical Wire Composition %: C 0.02, Mn 1.8, Si 0.4, S 0.010, P 0.015, Ni 13.4, Cr 23.2, Mo 0.10, Cu 0.1, N 0.05, FN WRC‑92 10
• Deposition Data (example for 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 components and structures
• Buffer layer welding on carbon‑manganese steels
• Dissimilar metal joining where corrosion resistance is secondary
• General fabrication of 23 % Cr‑12 % Ni stainless alloys