Typical all weld metal composition, %:
- C – 0.12
- Si – 0.7
- Mn – 0.8
- Cr – 29
- Ni – 9,5
Welding current: DC(+); АС
Yield strength: 610 МРа
Tensile strength: 790 МРа
Elongation: 25%
Ferrite content: WRC FN 40-50
Classifications: AWS A5.4: ЕЗ 12-17;
DIN 8555: E9-UM-200-CTZ; (DIN 8556: Е29 9 MPR 23 120);
Werkstoff No: 1.4337;
EN 1600: E 29 9 R 32
Approvals: Seproz UNA 272580
OK 68.81 is a high-alloyed electrode which deposits a ferritic-austenitic duplex weld metal with approx. 40% ferrite. It is resistant to stress corrosion and is highly insensitive to dilution. Good scaling resistance up to 1150°C. OK 68.81 is used for joining dissimilar steels, steels with reduced weldability and buffer layers prior to hardfacing. Applications: rolls, forging dies, hot-work tools, dies for plastics and so on.