Applications
Welding of 55kgf/mm2 class high tensile strength steel for ships, bridges, buildings, and boilers.
Characteristics
N-8018G is an iron powder low hydrogen type electrode, and provides good usability with direct current applications in all-positions.
The weld metal has good crack resistability and X-ray soundness. Also it is suitable for multi-layer fillet welding in large leg length.
Notes on usage
1.) Dry the electrodes at 350°C for about one hour before use.
2.) Adopt the back step method or strike the arc on a small steel plate prepared for this particular purpose to prevent the blowholes at the arc starting.
3.) Keep the arc as short as possible.
Typical Chemical Composition of Weld Metal (%):
C |
Si |
Mn |
|
Ni |
0.06 |
0.54 |
1.35 |
|
0.70 |
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) |
540 (78) |
620 (90) |
28 |
-29,110 (-20,81) |
Size and Recommended Current Range (AC or DC +):
Diameter (mm) |
2.5 |
3.2 |
4.0 |
5.0 |
Length (mm) |
350 |
350 |
400 |
400 |
Ampere |
Flat |
55-85 |
90-130 |
130-180 |
180-240 |
V & OH |
50-80 |
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. |
