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OK 68.81 3.2x350 1/2 VP 138
[68813230T0] |
OK 68.81 SMAW
Type Acid-rutile E312-17
Description
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 diies, hotwork
tools, dies for plastics and so on.
Welding current
DC+, AC OCV 60 V
Classifications
EN 1600 E 29 9 R 3 2
SFA/AWS A5.4 E312-17
Werkstoff Nr. 1.4337
Typical all weld metal composition, %
C Si Mn Cr Ni Mo Cu
0.12 0.7 0.8 29.0 9.8 <0.5 <0.3
Typical mech. properties all weld metal
Yield stress, MPa 610
Tensile strength, MPa 790
Elongation A5, % 22
Charpy V
Ferrite content FN 50-80
Test temps, °C Impact values, J
+20 30
Approvals
UDT EN 1600
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