Description
Characteristics:
LKE-7018-A1 is an iron powder low hydrogen type electrode for 490N/mm² high tensile steel. It provides high welding efficiency due to the addition iron powder. The weld metal contains 0.5% Mo.
Applications:
it is suitable for chemical plants, petroleum refinery plants and other casting steels.
Notes on Usage:
1.Dry the electrodes at 350-400°C for 60 minutes before use.
2.Take the backstep method at the arc starting.
3.Keep the arc as short as possible.
Classification:
AWS A5.5 E7018-A1
EN EN1599 E Mo B 3 2
JIS Z3223 DT 1216
Welding position:
Typical chemical composition of weld metal (wt%)
| C | Mn | Si | P | S | Mo |
| 0.080 | 0.78 | 0.54 | 0.012 | 0.013 | 0.56 |
Typical mechanical properties of weld metal
| YP N/mm² | TS N/mm² | EL % | PWHT |
| 490 | 575 | 31 | 620°C x1hr |
Sizes and recommended current range (AC or DC+)
| Diameter (mm) | 3.2 | 4.0 | 5.0 | |
| Length (mm) | 350 | 400 | 400 | |
| Amps | F | 90-140 | 140-190 | 190-240 |
| V&OH | 80-120 | 120-160 | – | |
| Weight per pack (kg) | 5 | 5 | 5 | |
| Weight per carton (kg) | 20 | 20 | 20 | |
