SUPRAMAX – 18

Classification :  AWS :  E7018 , BIS   : EB5426H₂JX

Characteristics : This Is a heavy coated, low hydrogen – Iron powder, all positions electrode with very smooth arc, nominal spatter and medium penetration. Extremely ductile weld metal is crack resistant. Recommended for heavy structures subjected to dynamic loading & mechanical restraint. Electrode delivers welds of radiographic quality with a deposition efficiency of 115% approx.

Applications : For castings replaced by heavy welded fabrications, pressure vessels, penstocks, bridges, for root passes in heavy structures subjected to mechanical restraint and dynamic loading, boilers. Specially for IS-2062, steel having thickness beyond 20mm and carbon steel of any thickness.

Weld Metal Properties (%)   

C = 0.05-0.10 Max  Mn = 0.80-1.60 Max
Si = 0.40-0.70 Max  S = 0.03 Max
P  = 0.03 Max   

All Weld Mechanical Properties

UTS    =   500-640 N/mm²
YS      =   450-550 N/mm²
Elong (L=4d) % = 24-30 Reduction in area % = 60 – 75
CVN Impact Value (J) at – 30°C:50-100 -46°C:30-50

Precautions : Preheat the electrodes at 250°C temp & hold it 50°C while in use.