Cast rods

[leadpig]

There seem to be a few types of rods for cast iron.
What are the differences/uses
I'm being asked to repair a few fences lately, which would be best
Tia

 

[Rrobson]

Whichever have the highest nickel content just to make your life easier
Cast iron fences are never going to be the easiest things to weld, stick with the major brands wherever possible. Thought about brazing? Probably easier than welding…

 

[Agroshield]

ENi-CI (Ni55, weld metal contains 50% nickle) & ENiFe-CI (Ni99, weld metal contains 50% nickle).

I think the designations and descriptions may be switched in above. I think ENiFe-CI is Ni55 and ENi-CI is Ni99. In addition, I think the percentage nickel written down should differ between the two (if it is 50% for both, as written above, what is the difference between them?).