Low-alloyed Electrodes
ES 9018 GV A5.5: E 9018 - G / EN 1599: E ZCrMoV1 B 4 2 H5
Description
ES 9018 GV Basic electrode for highly stressed joint and production welds on GS-17CrMoV5-10 type high temperature cast steel used in the construction of steam turbines and valve casings. Approved in long-term condition up to +600 °C service temperature. High creep rupture strength thanks to the C, Cr, Mo and V-content. High fracture toughness, low hydrogen content, good welding characteristics. The deposit is heat treatable. Metal recovery approx. 115%.
Typical Chemical Composition (%)
| Si | Mn | Mo | Cr | C | Ni |
|---|---|---|---|---|---|
| 0.40 | 1.60 | 0.40 | 0.40 | 0.05 | 0.40 |
Typical Mechanical Properties
| Yeild Strength | Tensile Strength | Elongation 5x D | Impact (ISO-V) |
|---|---|---|---|
| 720 N / mm² | 800 N / mm² | % 23 | + 20 °C – 150 j- 60 °C – 48 j |
Applications
It is particularly used for welding tempered steels having high yield strength values. Therefore, it is recommended in applications when preheating cannot be applied. It can be used in all position and in all types of joints. It is particularly used in the welding of steel parts, boiler and pressure vessels and in construction of heavy machinery that operate under difficult conditions like dynamic loads and very high or low operating temperatures.
Sizes Available & Recomennded Currents
| Diam. (mm) | Length (mm) | Current (Amperes) | Arc Voltage | Wire Feed |
|---|---|---|---|---|
| 3.25 | 350 | 100 - 140 | ||
| 4.00 | 450 | 145 - 190 | ||
| 5.00 | 450 | 180 - 260 |
Welding Current
DC { + }
Welding Positions
 Flat |
 Horizontal |
 Vertical Up |
 Overhead |
 Fillet |