Description
Characteristics:
LKE-7018-1 is a low hydrogen type electrode for the welding of 490N/mm² grade high tensile steel. The welding can be done with high deposition rate, good X-ray soundness and mechanical properties. With excellent impact value at temperature of -46°C.
Applications:
It is suitable for welding of nuclear reactor vessels, pressure vessels, LPG tanks ect.
Notes on Usage:
1.Dry the electrodes at 300-350°C for 60 minutes and keep at 100-150°C before use.
2.Keep the arc as short as possible.
3.Take the back-step method to prevent blowholes at the arc starting.
Classification:
AWS A5.1 E7018-1
EN E 42 4 B 3 2
JIS Z3212 D5016
Welding position:
Typical chemical composition of weld metal (wt%)
| C | Mn | Si | P | S |
| 0.060 | 1.38 | 0.58 | 0.02 | 0.005 |
Typical mechanical properties of weld metal
| YP N/mm² | TS N/mm² | EL % | IV -46℃ J |
| 500 | 585 | 30 | 81 |
Sizes and recommended current range (AC or DC+)
| Diameter (mm) | 2.6 | 3.2 | 4.0 | 5.0 | |
| Length (mm) | 350 | 350 | 450 | 450 | |
| Amps | F | 50-80 | 90-120 | 110-160 | 150-180 |
| V&OH | 55-85 | 90-130 | 130-180 | 170-240 | |
| Weight per pack (kg) | 4/5 | 5 | 5 | 5 | |
| Weight per carton (kg) | 20 | 20 | 20 | 20 | |
