OK Autrod 312

OK Autrod 312 is a continuous solid corrosion‑resistant chromium‑nickel welding wire designed for stainless steels of the 29% Cr, 9% Ni type. It provides good oxidation resistance at high temperatures and is ideal for joining dissimilar steels and difficult‑to‑weld alloys.

Key Features

• Ferritic‑austenitic alloy (29% Cr, 9% Ni) for excellent corrosion and oxidation resistance
• Suitable for MIG and TIG processes (M12, M13 shielding gases)
• High tensile strength (770 MPa) and yield strength (610 MPa) when welded
• Available in 1.0 mm and 1.2 mm diameters with corresponding deposition data

Specifications

• Classifications: EN ISO 14343‑A : G 29 9, SFA/AWS A5.9 : ER312
• Alloy Type: Ferritic‑austenitic (29 % Cr ‑ 9 % Ni)
• Shielding Gas: M12, M13 (EN ISO 14175)
• Tensile Yield Strength: 610 MPa (as welded)
• Tensile Strength: 770 MPa (as welded)
• Charpy Impact (20 °C, as welded): 50 J
• Typical Wire Composition: C 0.10 %, Mn 1.7 %, Si 0.41 %, S 0.001 %, P 0.020 %, Ni 8.8 %, Cr 30.4 %, Mo 0.15 %, Cu 0.11 %, N 0.05 %
• Deposition Data (1.0 mm): 80‑190 A, 16‑24 V, 2.9‑8.4 m/min, 1.1‑3.1 kg/h
• Deposition Data (1.2 mm): 180‑280 A, 20‑28 V, 4.9‑8.5 m/min, 2.6‑4.5 kg/h

Applications

• Welding of austenitic stainless steels and dissimilar steel combinations
• Machine components, tools, and austenitic manganese steel parts
• High‑temperature environments requiring oxidation resistance