A medium heavy coated, hydrogen-controlled iron powder type, all position electrode with a deposition
efficiency of approx 106% giving low alloy steel weld metal having approx 2.25%Cr, 1.0%Mo. Suitable
for the welding of similar Cr-Mo steels such as German 10CrMo9 and 10CrSiMoV7. Welds are
radiographically sound; creep resistance up to 600°C.
Redry the electrodes at 300°C for 1Hr for best results.
TYPICAL APPLICATIONS:
• Low alloy steel boilers and pipings operating at service temperatures upto 600°C.
• In oil refinery, thermal and chemical plants.
• Repair of high tensile steel castings.
TYPICAL ALL WELD METAL CHEMICAL COMPOSITION:
Element C Mn Si Cr Mo S P
% 0.12 max 0.50-0.90 0.25-0.65 2.00-2.50 0.90-1.25 0.03 max 0.03 max
ALL WELD MECHANICAL PROPERTIES
N/mm2
UTS 625-750
YS 540-670
Elongation(%)
(l=4xd) 17-25
CURRENT CONDITIONS:
SIZE mm 2.50 X 350 3.15 X 350 4.00 X 350 5.00 X 350
CURRENTAmps
AC/DC(+) 60-85 100-130 140-180 190-230
RECOMMENDED HEAT TREATMENT:
Preheat Temp. : 150°C
Interpass Temp. : 150°C to 250°C (depending on plate thickness)
Postheat Temp. : 675°C TO 760°C
HIGH TEMPERATURE PROPERTIES:
Postheat Treatment 0.2% yield strength in N/mm2
400°C 500°C 600°C
1/2hr/930°C/air 280 240 210
1hr/750°C/furnace 450 390 340