Cellulosic electrode is used for welding of pipes using the vertical down technique. It is also suitable for welding root passes, hot passes, filler and cover passes.
Weld metal analysis in % (typical values):
C
Mn
Si
Mo
S
P
0.11
0.5
0.12
0.25
<0.02
<0.02
Mechanical Properties of all-weld metal:
(single values are typical values)
Tensile Strength ( N/mm 2 )
Yield Strength ( N/mm 2 )
Elongation A4 (%)
Impact energy (J) ISO - V 10°C-
>500
> 400
> 22
27
Welding Parameters
Diameter (mm)
Length (mm)
Amperage (A)
2.5
350
60 – 80
3.25
350
80 – 120
4.0
350
110 – 140
5.0
350
140 – 200
Materials:
DIN Standard
St 37.0 to St 52.0; St 37-3 to St 52-3; St 37.4 to St 52.4; St 35.8 to St 45.8; HI; HII; StE 210.7 to StE 415.7; StE 290.7 TM to StE 415.7 TM. Root pass up to StE 480.7 TM
EN Standard
S235JR; S275JR; S235J2G3; S275J2G3; S355J2G3; P235GH; P265GH; P355T1; P235T2 to P355T2; L210 to L415NB; L290MB to L415MB; P235G1TH; P255G1TH; Root pass up to L480MB.
ASTM Standard
APl Spec. 5 L : A, B, X42, X46, X52, X56, X60.
*Preheat and interpass temperature is selected according to grade and thickness of pipe.
