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 (%)

SiMnMoCrCNi
0.401.600.400.400.050.40

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

Hardness (HB)


Special Coating ( performs several functions)


Typical Base Material Grades