Application/properties: Cellulosic electrode is appropriate for welding of large diameter and high strength pipes using the vertical down technique. It is suitable for welding hot , filler and cover passes.
Weld metal analysis in % (typical values):
P
S
Mo
Ni
Si
Mn
C
< 0.02
< 0.02
0.25
0.5
0.13
0.7
0.12
Mechanical Properties of all-weld metal: (Single values are typical values)
Impact energy (J)
ISO-V
Elongation
A4 (%)
Yield Strength
(N/mm2)
Tensile Strength
(N/mm2)
-00°C
> 27
> 19
> 460
> 550
Welding Parameters
Amperage (A)
Length (mm)
Diameter (mm)
60 – 80
350
2.5
80 – 120
350
3.25
110 – 140
350
4.0
140 – 200
350
5.0
Materials:
ST34.7 to ST60.7; StE 210.7 to STE 415.7; StE 415.7 TM to StE 480.7 TM. Root pass up to StE 480.7 TM
DIN Standard
L415NB to L485NB, L415MB to L485MB
EN Standard
APl Spec. 5 L : X52, X56, X60, X70.
ASTM Standard
*Preheat and interpass temperature is selected according to grade and thickness of pipe.
