SUPRATHERME(SPL)MOD-H4R - E7018-1H4R
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Electrodes for Low Temperature Service

SUPRATHERME(SPL)MOD-H4R

AWS: SFA 5.1 E7018-1H4R IS: 814 EB5626H3JX

Moisture resistant hydrogen controlled basic coated electrode for producing tough and ductile weld of radiographic quality in Boilers, Pressure vessels, Medium carbon steels, Cast steel and problematic steels. The weld metal is clean and has low level of impurities, thus having unique properties. The electrode can be used in all conventional positions of welding. It is ideally suited for welding carbon steels used in the construction of equipment subjected to heavy dynamic load, impact and severe service conditions in sour gas service.

Precaution

1. Restrict the heat input, use short arc and stringer bead.

2. Re-dry the electrodes at 250°C for 1 hour, if expose to atmosphere.

TYPICAL CHEMICAL COMPOSITION OF ALL WELD METAL (%)


Element
C
Mn
Si
S
P
Percent
0.06
1.40
0.30
0.010
0.015


TYPICAL MECHANICAL PROPERTIES OF ALL WELD METAL

UTS

YS

Elongation

CVN Impact Strength (J)

(MPa)

(MPa)

(L= 5d)%

at Minus 45°C

540

430

29.0

80


CORROSION TESTS: The weld metal meets the requirements as per NACE: TM-01- 77- 96 (SSCC) and TM-02-84-96 (HIC).

DIFFUSIBLE HYDROGEN CONTENT: 4 ml / 100 gms of weld metal Max.

MOISTURE AS CONDITIONED: 0.30 Max.

MOISTURE AS EXPOSED (80% RH, 27°C FOR 9 HRS): 0.40 Max.

ADVANTAGE: Electrodes are Vacuum packed, no need of drying and can be used straight on the job.

CURRENT & PACKING DATA: AC / DC (+)

Size (mm)

5x450

4x450

3.15x450

2.5x350

Current Range (Amps)

190-250

140-200

90-140

70-100

Qty. (Pcs./Carton)

20

30

45

80

Electrodes for Low Temperature Service
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