OK 61.80

OK 61.80 is a Nb‑stabilized MMA stick electrode designed for welding Nb‑ or Ti‑stabilized stainless steels of the 19Cr10Ni type. It offers good hot‑cracking resistance and is vacuum‑packed for moisture protection.

Key Features

• Nb‑stabilized electrode for improved hot‑crack resistance
• Acid rutile coating for easy arc stability
• Vacuum‑packed (VacPac) packaging to prevent moisture pickup
• Suitable for AC and DC+ welding currents

Specifications

• Classifications: EN ISO 3581‑A : E 19 9 Nb R 1 2, SFA/AWS A5.4 : E347‑17
• Approvals: CE EN 13479, DNV NV 347, UKCA EN 13479, VdTÜV 00638
• Welding Current: DC+, AC
• Ferrite Content: FN 6‑12
• Alloy Type: Austenitic CrNi
• Coating Type: Acid Rutile
• Minimum AC Open‑Circuit Voltage: 50 V
• Tensile Yield Strength (As Welded): 480 MPa
• Tensile Strength (As Welded): 620 MPa
• Elongation (As Welded): 40 %
• Charpy Impact (As Welded, 20 °C): 60 J
• Typical Weld Metal Composition: C 0.03 %, Mn 0.6 %, Si 0.7 %, Ni 10.0 %, Cr 19.5 %, N 0.09 %, Nb 0.29 %
• Deposition Data (2.5 × 300 mm): 50‑90 A, 26 V, 56 % efficiency, 1.0 kg/h

Applications

• Welding Nb‑ or Ti‑stabilized stainless steel components
• Projects requiring high hot‑crack resistance up to 400 °C maximum working temperature
• General purpose SMAW where flexibility and portability are essential