Applications
Cor-ten, Mayari R, LT75, N-A-Z High Tensile, V-55, Yoloy HS, military and commercial applications.
Characteristics
N-8018-C3 is a 1% nickel, low hydrogen, iron powder electrode used for welding high strength steels in the 70-80,000 psi tensile strength range. This electrode offers high deposition efficiency, producing excellent quality of weld weld deposits with good impact properties even at temperatures as low as -60°C. N-8018-C3 is also used for fillet welds on high strength quenched and tempered steels such as ASTM A514 and A517. N-8018-C3 may be used in any position with AC or DC (reverse polarity).
Notes on usage
(1) Dry the electrodes at 350-400°C for about one hour before use and store the electrodes at 100-150°C after drying them with attention to keep away from moisture.
(2) Adopt back step method or strike the arc on a small steel 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 100-150°C. The temperature to be applied varies in accordance with plate thickness and kind of steel to be welded.
(5) Pay attention not to exceed proper heat-input because excessive heat-input causes deterioration of impact values and yield strength of weld metal.
Typical Chemical Composition of Weld Metal (%):
C |
Si |
Mn |
|
Ni |
0.07 |
0.45 |
0.91 |
|
1.03 |
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) |
530 (77) |
600 (87) |
31 |
-40, 60 (-40, 44) |
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 |
65-90 |
90-130 |
135-185 |
190-250 |
V & OH |
60-90 |
80-120 |
110-170 |
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. |
