OK 84.78
SMAW
Type Rutile-basic

Electrode producing a weld metal with coarse chromium carbides in an austenitic matrix. Suitable for surfacing worn parts exposed to abrasion; earth-moving machines, mixers, feeder screws, dust exhausters, crushers and from wear by coal, ore and other minerals. Also in corrosive environments and/or elevated temperatures.
Welding current, A
AC, DC+ OCV 50 V


ClassificationsApprovalsTypical all weld metal compositionTypical properties all weld metal
DIN 8555
E10-UM-60-CZ
SeprosUNA 409819
C4,5
Si0,8
Mn<1,6
Cr33
Redrying temperature, °C
300
Redrying time, hours
2
Recovery
180-190
Weld metal hardness, a w
59-63 HRC
Tempering resistance
Temp°C/1h.HRC 100.58 300.59 400.57 490.59 600.57 700.58
Machinability
Grinding only
Abrasion resistance
Excellent
High temp. wear resistance
Good
Corrosion resistance
Excellent

Diameter, mm2,53,24,05,0
Length, mm 350 350 450 450
Arc voltage, V 24 24 26 26
Welding current, A 90-120 115-170 130-210 150-300
N. Kg weld metal/kg electrodes 0,62 0,62 0,64 0,64
B. No. of electrodes/kg weld metal 48,0 26,0 13,5 9,0
H. Kg weld metal/hour arc time 1,2 1,6 2,0 2,9
T. Burn-off time, secs/electrode 60 85 135 140

 

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