AWS: SFA 5.5 E9015-B24 Electrodes for Creep Resisting Steels
A stable and steady arc which is easy to strike and re-strike. * Easy slag removal and finely rippled smooth beads. * Weld metal of having lesser impurities i.e. S, P will improve the subzero impact property. * The electrode is used for welding similar composition materials and SA-182, F22V SA-336, F22V & SA-541, 22V. * Specially applicable wherever prolonged heat treatments cycles are involved. * Basically it is used for fabricating desulphurization reactors, heavy section pressure vessels having similar composition.
Precaution
1. Ensure the electrodes are dry. Re-dry the electrodes at 250-300°C for one hour.
2. Use short arc, low current and stringer beads.
TYPICAL CHEMICAL COMPOSITION OF ALL WELD METAL
Element |
C |
Mn |
Si |
P |
S |
Cr |
Ni |
Mo |
V |
Nb |
N |
Ai |
Ti |
Cu |
B |
Percent |
0.06 |
0.7 |
0.30 |
0.012 |
0.007 |
2.2 |
0.3 |
1.0 |
0.2 |
0.03 |
0.04 |
0.02 |
0.05 |
0.1 |
0.004 |
TYPICAL MECHANICAL PROPERTIES OF ALL WELD METAL
(PWHT : 740°C FOR 2 HRS)
UTS |
YS |
Elongation |
(MPa) |
(MPa) |
(L= 4d)% |
640 |
550 |
22 |
CURRENT AND PACKING DATA: DC (+)
Size (mm) |
5x450 |
4x350 |
3.15x350 |
2.5x350 |
Current Range (Amps) |
180-240 |
140-180 |
100-130 |
70-100 |
Qty. (Pcs./Carton) |
35 |
55 |
75 |
100 |
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