With Ni-Touch™ the nickel electrode mitigates the effect of hydrogen. This results in successful underwater wet welds involving a broad range of high carbon equivalent steels, including HY-80 quenched, and tempered steel used in Naval ships with carbon equivalents exceeding 0.50 percent. Ni-Touch meets the more stringent requirements of the Navy’s Naval Ship Technical Manual NSTM 074.
Ni-Touch™ Electrodes
Broco’s Ni-Touch™ nickel wet welding electrode was developed to allow underwater wet welding of higher carbon and high tensile steels which would normally require the use of more expensive dry chamber welding. Ni-Touch electrodes produce welds with less porosity, while allowing deeper welding in the overhead position than similar electrodes. They are appropriate for all position groove and fillet welds. Test results exceed the requirements of the American Welding Society (AWS) Specification D3.6–99 for Class B underwater wet welds. Yield strengths typically exceeding 70 ksi and tensile strengths exceeding 80 ksi can be expected from the nickel weld metal in the as-welded condition. Ni-Touch is presently qualified at a water depth of 33 feet.