Applications
Welding of 55 kgf/mm2 class high tensile strength weather proof steel of structures, building, vehicles and bridges.
Characteristics on usage
N-8018-w is an all position iron powder low hydrogen type electrode which exhibits high crack resistibility and superior notch toughness of depositing weld metal. It is suitable for welding comparatively thick plates of weather proof steel.
Notes on usage
(1) Dry the electrodes at 350-400°C for about one hour before for 30-60 minutes before use.
(2) Adopt back step method or strike the arc on a small steel plate prepared for this particular purpose to prevent blowholes at the arc starting.
(3) Keep the arc as short as possible
Typical Chemical Composition of Weld Metal (%):
C |
Si |
Mn |
Cr |
Ni |
Cu |
0.06 |
0.54 |
0.84 |
0.52 |
0.61 |
0.48 |
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) |
640 (93) |
27 |
-18, 95 (0, 70) |
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 |
130-190 |
200-240 |
V & OH |
50-80 |
70-110 |
100-170 |
160-210 |
Welding Positions:
ALL POSITIONS
Packing:
20 Kg corrugated box, with 4 units of 5 Kg shrinked plastic wrapped paper boxes inside.
Special requests on packing are accepted. |
