Welding Electrode
Welding Electrode
(OP)
What is the difference between E7018-H4R electrode vs. E7018-1 ?
Can the E7018-1 be substituted for E7018-H4R ?
(note: they both have the same F No.)
Can the E7018-1 be substituted for E7018-H4R ?
(note: they both have the same F No.)





RE: Welding Electrode
The -1 refers to specific impact requirements for low temperature service (avg min of 20 ft-lbs at -50 deg F).
The E7018- H4R refers to a low hydrogen, electrode, with no impact requirements.
Can you substitute? It depends on the specific service application. I would strongly recommend you review AWS SFA 5.1
RE: Welding Electrode
They are both the same electrode - one meets the impact test requirements and the other meets the requirements of the Absorbed Moisture and Diffusible Hydrogen tests.
If it was E7018 being replaced with E7018-1 or E7018-H4R, no problem, but as specific testing was nominated for your original electrode you need to ascertain why ? As metengr stated, specific servive application may have a lot to do with it.
Regards,
Kiwi
RE: Welding Electrode
RE: Welding Electrode
RE: Welding Electrode
One od the biggest violations I see with 7018 is the welder sticking them in his back pocket on a hot day. Another is leaving them on the shack table on very humid while going to lunch.
RE: Welding Electrode
RE: Welding Electrode
RE: Welding Electrode