OK 67.43

Austenitic stainless steel MMA electrode offering tough, crack‑resistant weld metal with a small amount of uniformly distributed ferrite. Ideal for joining 13% Mn steels and other low‑weldability steels.

Key Features

• Austenitic CrNiMn composition with excellent corrosion resistance
• Low ferrite content (FN < 5) for high toughness
• Available in rutile and basic coatings
• Vacuum‑sealed VacPac packaging for moisture protection

Specifications

• Classifications: EN 14700 :E Fe10, EN ISO 3581‑A :E 18 8 Mn R 12, SFA/AWS A5.4 (E307‑16), Werkstoffnummer 1.4370
• Approvals: CE EN 13479, DB 30.039.07, UKCA EN 13479, VdTÜV 06797
• Welding Current: AC, DC+
• Ferrite Content: FN < 5
• Alloy Type: Austenitic (CrNiMn)
• Coating Type: Rutile / Basic
• Minimum AC Open‑Circuit Voltage: 65 V
• Tensile Yield Strength: 440 MPa
• Tensile Strength: 630 MPa
• Elongation: 35 %
• Charpy Impact (20 °C): 80 J; (‑60 °C): 52 J
• Typical Weld Metal Chemistry (%): C 0.08, Mn 5.4, Si 0.8, Ni 9.1, Cr 18.4, N 0.08, FN 2
• Deposition Data (example size 4.0 × 350 mm): 100‑150 A, 23 V, 56 % efficiency, 61 s/fusion, 1.7 kg/h

Applications

• Welding of austenitic stainless steels
• Joining 13 % Mn steels to other steel grades
• Repair of steels with poor weldability