Applications
Welding of Creep resisting steels of CrMo type, e.g. BS 1501-620, 621 equivalent castings and forging.
Characteristics
N-8018-B2 is a basis coated hydrogen controlled electrode for low alloy and creep-resisting CrMo-steels. Maximum operation temperature 550°C.
Suitable for welding of thick steam pipe and repairing of cast steel.
Low spatter loss, ready slag detachment.
GUIDELINE IN USAGE
Keep the arc short. Preheating 200-250°C. Strees relieving 620°C DC welding by preference.
Typical Chemical Composition of Weld Metal (%):
C |
Si |
Mn |
Cr |
Mo |
0.06 |
0.61 |
0.70 |
1.32 |
0.55 |
Typical Mechanical Properties of Weld Metal:
Yield Point
N/mm2 (Kgf/mm2) |
Tensile Strength
N/mm2 (Ksi) |
Elongation
(%) |
PWHT |
590 (86) |
670 (97) |
25 |
690 degrees C x 1 hr |
Size and Recommended Current Range (AC/DC+):
Diameter (mm) |
2.5 |
3.2 |
4.0 |
5.0 |
Length (mm) |
350 |
350 |
400 |
400 |
Ampere |
Flat |
60-90 |
90-130 |
140-180 |
180-240 |
V & OH |
50-80 |
80-115 |
110-170 |
150-200 |
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. |
