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Electrodes for Weathering Steels

COROTHERME

AWS: SFA 5.5 E7018-W1

Corotherme is low hydrogen, iron powder type electrode designed for all conventional welding positions. The electrode coating contains carefully chosen flux ingredients to provide mechanically sound weld deposits of radiographic quality. Deposits weld metal with very low level of hydrogen, which ensures the weld metal complete freedom from hot or cold cracking. It is primarily developed for the welding of weather resistant steels. The weld metal mechanical properties afford a high degree of security against heavy stress and for welds on thick plates. The weld deposit has excellent atmospheric corrosion resistance.

Precaution

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

2. Re-dry the electrodes at 250-300 C for one hour as per our standard recommended practice.

CHEMICAL COMPOSITION OF ALL WELD METAL (%)


Element
CMnSiSPNiCuCrV
Percent
0.0550.60
0.500.150.180.300.0400.0200.02


MECHANICAL PROPERTIES OF ALL WELD METAL


UTSYSElongation
CVN Impact Strength (J)
(MPa)
(MPa)
(L= 4d)%
at Minus 20°C
57044028.0
62
CURRENT AND PACKING DATA: AC/DC (+)


Size (mm)
6.3x4505x4504x450
3.15x450
2.5x350
Current Range (Amps)
250-300200-250150-190
110-140
70-100
Qty. (Pcs./Carton)
253555
75125




Electrodes for Weathering Steels