OK 73.08

OK 73.08 is a NiCu‑alloyed stick electrode designed for excellent corrosion resistance in seawater and flue‑gas environments, ideal for weathering steels such as Cor‑Ten.

Key Features

• NiCu alloy (0.7 % Ni, 0.4 % Cu) for superior corrosion resistance
• Basic coating type suitable for AC and DC+ welding
• Vacuum‑packed (VacPac™) packaging keeps electrodes dry and ready to use
• Wide amperage range with high deposition efficiency

Specifications

• Classifications: SFA/AWS A5.5 E8018‑G, EN ISO 2560‑A E 46 5 Z B 32
• Approvals: ABS 3Y H10, BV 3Y H10, CE EN 13479, DNV‑GL 3 YH10, others listed
• Welding Current: AC, DC+
• Diffusible Hydrogen: < 10 ml/100 g
• Alloy Type: Low alloyed (0.7 % Ni, 0.4 % Cu)
• Coating Type: Basic covering
• Min AC OCV: 65 V
• Tensile (As Welded): Yield 520 MPa, Tensile 610 MPa, Elongation 30 %
• Charpy Impact (As Welded): -50 °C, 100 J
• Typical Weld Metal Analysis: C 0.06 %, Mn 1.1 %, Si 0.4 %, Ni 0.7 %, Cu 0.4 %
• Deposition Data (example 3.2 × 350 mm): 100‑150 A, 23 V, 62 % efficiency, 68 s fusion, 1.2 kg/h

Applications

• Welding of weathering steels (e.g., Cor‑Ten)
• Ship hull structural steel fabrication
• Projects requiring high corrosion resistance and good mechanical properties