Descripción
Características:
LKE-9018-B91 is designed to weld equivalent ‘type T91’ CrMo steels modified with small additions of niobium and vanadium to give improved long term creep properties. These consumables are specifically intended for high integrity structural service at elevated temperature so the minor alloy additions responsible for its creep strength are kept above the minimum considered necessary to ensure satisfactory performance.
Aplicaciones:
It is suitable for welding of the steel such as ASTM A213-T91, A335 P91, A387 Gr.91,A182 F91.
Notas sobre el uso:
1.Dry the electrodes at 350-400°C for 60 minutes before use.
2.Do not exceed the range of recommended because over heat input might decrease the impact value.
3.Keep the arc as short as possible.
4.Take the back-step method at the arc starting to prevent blowholes.
5.Preheat the workpiece at 250-350°C and proceed PWHT.
Clasificación:
AWS A5.5 E9018-B91
Welding position:
Composición química típica del metal de soldadura (wt%)
| C | Mn | Si | P | S | Cr | Mo | Nb | V | Ni |
| 0.09 | 0.9 | 0.30 | 0.01 | 0.009 | 9.0 | 1.00 | 0.06 | 0.20 | 0.6 |
Propiedades mecánicas típicas del metal de soldadura
| YP N/mm² | TS N/mm² | EL % | PWHT |
| 550 | 700 | 20 | 740°C x1hr |
Sizes and recommended current range (AC or DC+)
| Diámetro (mm) | 3.2 | 4.0 | 5.0 | |
| Length (mm) | 350 | 450 | 450 | |
| Amperios | F | 80-130 | 100-160 | 160-210 |
| V&OH | 70-110 | 80-130 | – | |
| Peso por envase (kg) | 5 | 5 | 5 | |
| Weight per carton (kg) | 20 | 20 | 20 | |
