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Electrodes for Low Temperature Service

SUPRATHEME-Ni(SPL)Mod

AWS: SFA 5.5 E8018-G

It is basic coated, low hydrogen, iron powder type electrode yielding a 1.0% Ni in the weld metal. Radiographic quality welds having excellent cracking resistance. Weld metal of excellent toughness to withstand heavy dynamic loading and impact. Ideally suited for welding fine grained steels, low alloy steels subjected to sub-zero temperature applications down to minus 60°C. Ideal for welding, heavy sections, highly restrained joints subjected to dynamic loading. Ideal for pressure vessels, tanks, spheres, etc.

Precaution

1. Ensure the electrodes are dry. Re-dry the electrodes at 250-300 C for one hour.

2. For best impact properties, accomplish minimum heat input by: Using smallest size of electrode possible, minimum weaving, maximum number of layers, welding in down hand position wherever possible.

CHEMICAL COMPOSITION OF ALL WELD METAL (%)


Element
CMnSiPSNi
Percent
0.071.500.300.0100.010
1.00


MECHANICAL PROPERTIES OF ALL WELD METAL


UTSYSElongation
CVN Impact Strength (J)
(MPa)
(MPa)
(L= 4d)%
at Minus 60°C
57052027.0
75

CTOD (SENB) at 0°C : 0.25 mm minimum


CURRENT AND PACKING DATA: AC / DC(+)


Size (mm)
6.3x4505x4504x450
3.15x350
2.5x350
Current Range (Amps)
270-330220-280160-190
100-140
70-100
Qty. (Pcs./Carton)
253555
75125