Nihonweld NSS-505 description: NSS-505 is a low hydrogen type electrode for all-position welding, which provides the weld metal of 9% Cr-Mo.
NOTES ON USAGE:
Dry the electrodes at 325-375C for about one hour before use.
Preheat at 250-350C and post heat at 720-780C.
Adopt back step method or strike the arc on a small steel plate prepared for this particular purpose to prevent blowholes at the arc starting.
Keep the arc as short as possible.