OK 61.81

OK 61.81 is a Nb‑stabilized MMA stick electrode designed for welding Nb‑ or Ti‑stabilized 19Cr10Ni stainless steels with improved hot‑cracking resistance.

Key Features

• Rutile coating for easy arc initiation and stable arc.
• High ferrite content (FN 6‑12) for better crack resistance, limited to 400 °C work temperature.
• VacPac hermetically sealed packaging to protect against moisture.
• Available in multiple diameters and lengths for various deposition rates.

Specifications

• Welding Current: DC+, AC
• Ferrite Content: FN 6‑12
• Alloy Type: Austenitic CrNi
• Coating Type: Rutile
• Min AC OCV: 60 V
• Classifications: EN ISO 3581‑A : E 19 9 Nb R 3 2, SFA/AWS A5.4 : E347‑16, Werkstoffnummer 1.4551
• Approvals: CE EN 13479, DNV NV 347, UKCA EN 13479
• Deposition Data (example): 2.5 × 300 mm – 50‑80 A, 29 V, 59 % efficiency, 1.2 kg/h

Applications

• Welding of Nb‑ or Ti‑stabilized stainless steel components.
• Situations requiring high hot‑cracking resistance.
• Fabrication where covered electrodes are preferred for flexibility.