OK 68.81

High‑alloy stainless steel stick electrode offering a ferritic‑austenitic duplex weld with FN 30‑50, excellent resistance to stress‑corrosion cracking and scaling up to 1150 °C.

Key Features

• Duplex weld metal (ferrite content FN 30‑50) for high corrosion resistance
• Acid‑rutile coating for easy arc stability
• VacPac hermetically‑sealed packaging to prevent moisture uptake
• Wide amperage range suitable for 2 mm to 5 mm diameters

Specifications

• Welding Current: DC+, AC
• Ferrite Content: FN 30‑50
• Alloy Type: Stainless duplex
• Coating Type: Acid Rutile
• Min AC OCV: 60 V
• Tensile Yield Strength: 610 MPa (as‑welded)
• Tensile Strength: 790 MPa (as‑welded)
• Elongation: 25 % (as‑welded)
• Charpy Impact (20 °C): 30 J (as‑welded)
• Typical Weld Metal Composition (%): C 0.13, Mn 0.9, Si 0.7, Ni 10.2, Cr 28.9, Mo 0.04, N 0.09, FN 40
• Deposition Data (2 mm x 300 mm): 40‑60 A, 22 V, 64 % efficiency, 0.7 kg/h

Applications

• Joining HWT steels and dissimilar steels
• Surfacing rails, rolls, forging dies, hot‑work tools
• Die fabrication for plastics
• Any application requiring high scaling resistance up to 1150 °C