OK 76.28
SMAW
Type Basic

OK 76.28 is an LMA electrode for welding creep-resistant steels containing approx. 2.25Cr1Mo. The electrode runs with a quiet, stable arc and produces a minimum of spatter loss. OK 76.28 deposits a weld metal with good cracking resistance. The scaling temperature of the weld metal is about 625C.
Welding current, A
DC(+-)


ClassificationsApprovalsTypical all weld metal compositionTypical properties all weld metal
SFA/AWS A5.5
E9018-B3
EN 1599
ECrMo2 B 42 H5
ABSSR
BVUP
CL 
DSEN 1599
SeprosUNA 485155
SFSEN 1599
SSEN 1599
UDTDIN 8575
VdTV 
C0,07
Si0,3
Mn0,6
Cr2,2
Mo1,0
Redrying temperature, C
350
Redrying time, hours
2
Recovery
115%
Yield stress, MPa
550
Tensile strength, MPa
650
Elongation, %
18
Elongation, %
18
Charpy V
Test temps, CImpact values, J
+2050
-2025

Diameter, mm2,02,53,23,24,04,05,06,0
Length, mm 300 300 350 450 350 450 450 450
Arc voltage, V 23 25 26 - - 28 29 30
Welding current, A 55-80 70-110 95-150 95-140 130-190 130-190 150-260 200-350
N. Kg weld metal/kg electrodes 0,58 0,58 0,59 - - 0,64 0,64 0,64
B. No. of electrodes/kg weld metal 136,0 88,0 49,0 - - 23,0 14,5 10,5
H. Kg weld metal/hour arc time 0,7 0,8 1,2 - - 1,8 2,7 3,9
T. Burn-off time, secs/electrode 40 52 62 - - 88 92 90

 

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