OK 93.01 SMAW
Type Acid-rutile ECoCr-C
Description
A high-recovery, surfacing electrode depositing a
Co-Cr-W alloy high in carbon. The deposit is the
hardest of the standard Co-base range.
Typical applications:
hot rolls, hot rolling guides, drawing blocks
kneadling rolls, screw presses
hot shear blades, glass cutters, hot scrapers,
pump and press casings, burner nozzles
Welding current
AC, DC+ OCV 65 V
1231
Classifications
SFA/AWS A5.13 ECoCr-C
DIN 8555 E 20-UM 55 CTZ
Typical all weld metal composition,

C Si Mn Cr W Co Fe
2.2 1.2 1.0 30 12.5 48 3
Typical mech. properties all weld metal
Weld metal hardness, a w 55 HRC
Hot hardness 600°C 800°C
44 HRC 34 HRC
Machinability Grinding only
Abrasion resistance Excellent
High temp. wear resistance Excellent
Corrosion resistance Excellent
Deposition data at max current
Diameter,
mm
Length,
mm
Welding
current, A
Arc voltage,
V
N.
Kg weld
metal/kg
electrodes
B.
No. of electrodes/
kg
weld metal
H.
Kg weld
metal/hour
arc time
T.
Burn-off
time, s/
electrode
3.2 350 90-130 30 0.60 30 1.4 88
4.0 350 120-170 30 0.60 20 2.0 95
5.0 350 150-200 28 0.55 14 2.0 124