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OK 68.81

OK 68.81

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.

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Typical Tensile Properties

ISO As welded
Elongation Tensile Strength Yield Strength
- - -
AWS As welded
Elongation Tensile Strength Yield Strength
25 % 790 MPa 610 MPa

Charpy V-Notch Properties

AWS As welded
Impact Value Testing Temperature
30 J 20 °C

Weld Metal Analysis

MnMoCSiFerrite FNNiNCr
0.9 %0.04 %0.13 %0.7 %40 %10.2 %0.09 %28.9 %

Approvals: CE, EN 13479, Seproz, UNA 272580
Classifications: EN 14700, E Fe11, EN ISO 3581-A, E 29 9 R 3 2, SFA/AWS A5.4, E312-17, Werkstoffnummer, 1.4337

Approvals are based on factory location. Please contact ESAB for more information.

Alloy Type: IMPERIAL_Stainless duplex
Coating Type: Acid Rutile
Ferrite Content: FN 30 - 50
Welding Current: DC+, AC