01 8366142
Product Description
Type Acid Rutile
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.
Welding current
DC+, AC OCV 60 V
| Classifications | Approvals | Typical all weld metal composition, % | Typical mech. properties all weld metal | ||||||||||||||||||||||||||||||||||
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Yield stress, MPa 610 Tensile strength, MPa 790 Elongation, % 22 Elongation, % 22 Ferrite content FN 35 – 65 Weld metal hardness, a w 220-240 HV Machinability Fair
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| Redrying temperature, °C 350 Redrying time, hours 2 |