when are low hydrogen electrodes used?

by amber
(carmine texas USA)

when are low hydrogen electrodes used?



low hydrogen electrodes are specified by numerous American Welding Society code books. The main Structural code book referenced by contractors is AWS D1.1. ....it is the standard for structural welding on bridges, buildings, work platforms, and a whole bunch of other stuff that is important.

Low hydrogen electrodes are spec'd out to prevent the addition of hydrogen to welds. The hydrogen molecule is so small that it permeates the metal and then causes cracking when it expands and tries to escape.


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