DK-18 Ni (MOD) E8018-G
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Electrodes for Low Temperature Service

DK-18Ni (Mod)

AWS: SFA 5.5 E8018-G

DK-18Ni(Mod) is a basic coated low hydrogen electrode for low temperature application welding. Suitable for welding of DMR grade fine-grained steel, heavy section fabrication, pressure vessels, penstock pipelines, fine grained quenched & tempered steels, etc where high stress & dynamic loading service applications are involved. The weld metal is of radiographic quality. Typical material grades suitable for welding with this electrodes are- DMR 249A, C/D grades of ASTM SA-414, Grade 55 & 60 steels of SA-516, Steels conforming to SA-814, IS: 2002, IS: 2062 and equivalent grade of steels.

Precaution
  1. Re-dry the electrodes at 400°C for two hours as per our standard recommended practice.
  2. Re-dried electrodes shall be kept in a holding oven (maintained at 150-200°C) to avoid moisture pick up.
Approvals
    Indian Navy
CHEMICAL COMPOSITION OF ALL WELD METAL (%)


Element
CMnSiSPNi
Percent
0.10 Max0.60-1.500.35 Max0.015 Max0.030 Max2.0-3.5


MECHANICAL PROPERTIES OF ALL WELD METAL

Property

UTS

(MPa)

YS

(MPa)

Elongation 

(L=5d)%

CVN Impact Strength

at minus 50°C (J)

Range600 Min
500 Min
22.0 Min
50 Min


DIFFUSIBLE HYDROGEN CONTENT

< 4 ml/100 gms of weld metal by mercury method.

WELDING POSITION

F, H, VU, OH

CURRENT & PACKING DATA - DC (+)


Size (mm) Dia x Length
5 x 450
4 x 450
3.15 x 350/450
2.5 x 350
Current Range (Amps)
180-220
140-180
100-140
60-90
Qty. (Pcs./Carton)
45
70
100
150
Qty. (kgs/Carton) Vacuum
2222
Qty. (Cartons/Box) Pcs.
4444
Qty. (Cartons/Box) kgs Vacuum
6666

Electrodes for Low Temperature Service

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