N-7018-G is a low hydrogen iron powder type electrode for 50kg/mm2 class high tensile steel and Al-killed steel used in temperature up to – 46ºC
Excellent mechanical properties.
Good notch toughness in low temperature.
X-ray performance and mechanical usability are good.
NOTES ON USAGE:
Dry the electrodes at 300-350ºC for one hour before use.
Adopt back step method or strike the arc on a small steel plate prepared for this purpose to prevent blowholes at the arc starting.
As excessive heat-input deteriorates impact values, weld with proper heat-input selected according to the impact values required.