OK 68.82
SMAW
Type Rutile-acid

OK 68.82 is a high-alloyed electrode which deposits a ferritic-austenitic duplex weld metal with approx. 30-35% ferrite. Resistant to stress corrosion and highly insensitive to dilution. Good scaling resistance up to 1150C. OK 68.82 is used for joining steels with reduced weldability and buffer layers prior to hard surfacing, dissimilar steels, rolls, alforging dies, hot-work tools, dies for plastic and so on.
Welding current, A
DC+, AC OCV 55 V


ClassificationsApprovalsTypical all weld metal compositionTypical properties all weld metal
SFA/AWS A5.4
(E312-17)
EN 1600
E 29 9 R 1 2
Werkstoff Nr.
1.4337
C0,12
Si1,0
Mn0,9
Cr29,0
Ni10,0
Mo<0,5
Cu<0,3
Redrying temperature, C
300
Redrying time, hours
2
Recovery
105
Yield stress, MPa
500
Tensile strength, MPa
750
Elongation, %
25
Elongation, %
25
Ferrite content
FN 50-80
Weld metal hardness, a w
220-240 HV
Machinability
Fair

Diameter, mm2,02,53,24,05,0
Length, mm 300 300 350 350 350
Arc voltage, V 26 25 26 30 30
Welding current, A 40-60 50-85 55-120 75 -170 140-230
N. Kg weld metal/kg electrodes 0,54 0,52 0,52 0,55 0,55
B. No. of electrodes/kg weld metal 166 104 55 36 22
H. Kg weld metal/hour arc time 0,7 1,0 1,3 2,0 2,7
T. Burn-off time, secs/electrode 33 45 57 60 71

 

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