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Electrodes for Low Temperature Service

SUPRATHERME-Ni(SPL)H4R

AWS: SFA 5.5 E8018-G H4R

Supratherme-Ni(Spl)H4R is a basic coated, low hydrogen, moisture resistant, iron powder type electrode yielding a weld metal containing 1.5Mn and 0.7Ni. Excellent quality welds for welding heavy sections of fine-grained high strength steels with particular reference to low temperature service down to minus 50 C. Typical applications include welding of fine grained Q&T steels for pressure vessels, tanks, penstocks, where high strength and sub-zero temperature toughness properties are of importance.

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.

Approvals
    BHEL
TYPICAL CHEMICAL COMPOSITION OF ALL WELD METAL (%)


Element
CMnSiNiSP
Percent
0.081.500.400.700.0150.016


TYPICAL MECHANICAL PROPERTIES OF ALL WELD METAL
UTSYSElongation
CVN Impact Strength (J)
(MPa)
(MPa)
(L= 4d)%
at Minus 50°C
62055028.0
50


MOISTURE

• As Conditioned : 0.20% Max.

• As Exposed : 0.40% Max. (27 C and 80% Relative Humidity for 9 Hours)

DIFFUSIBLE HYDROGEN CONTENT:

 4.0 ml/100 gms of weld metal

ADVANTAGE:

 Electrodes are Vacuum packed, no need of drying and can be used

straight on the job.

CURRENT AND PACKING DATA: AC/DC (+)


Size (mm)
5x4504x350
3.15x350
2.5x350
Current Range (Amps)
170-240140-170
100-130
70-90
Qty. (Pcs./Carton)
20304580