Applications
Welding of 60kgf/mm2 class high tensile strength steel for pressure vessels, bridges, penstocks, vehicles, offshore constructions vehicles and machinery. Fillet tack welding of T1, HY80, HY90 steels.
Characteristics
N-9018M is an iron powder low hydrogen type electrode for all-position welding, which provides good notch toughness of weld metal at low temperature. The usability and X-ray soundness of weld metal are good in all-position welding.
Notes on usage
(1) Dry the electrodes at 350°C-400°C for about one hour before use.
(2) Adopt back step method or strike the arc on a small plate prepared for this particular purpose because arc striking on base metal is in danger of initiating cracking.
(3) Keep the arc as short as possible.
(4) Preheat at 80-100°C before use.
(5) Pay attention not to exceed proper heat-input because excessive heat-input causes deterioration impact values and yield strength of weld metal.
Typical Chemical Composition of Weld Metal (%):
C |
Si |
Mn |
Ni |
Mo |
0.07 |
0.46 |
1.10 |
1.65 |
0.25 |
Typical Mechanical Properties of Weld Metal:
Yield Point
N/mm2 (Kgf/mm2) |
Tensile Strength
N/mm2 (Ksi) |
Elongation
(%) |
Impact Value
Deg C, J (Deg F, Ft-lbs) |
580 (84) |
660 (96) |
27 |
-51,90 (-60,66) |
Size and Recommended Current Range (AC or DC +):
Diameter (mm) |
2.5 |
3.2 |
4.0 |
5.0 |
Length (mm) |
350 |
350 |
350 |
350 |
Ampere |
Flat |
55-85 |
90-130 |
130-180 |
180-240 |
V & OH |
50-8 |
90-115 |
110-170 |
150-200 |
Welding Positions:
ALL POSITIONS EXCEPT VERTICAL DOWN
Packing:
20 Kg corrugated box, with 4 units of 5 Kg shrinked plastic wrapped paper boxes inside.
Special requests on packing are accepted. |
