Sunday, April 10, 2011

[MW:10641] magnetizing of copper-nickel

Dear All
in my project we use Cu-Ni (90-10) that welded with filler(70-30) by GTAW.now in some location of weld in some joints attracted by magnet.
Is it possible excepted by wrong use of filler metal?
it must be added that this event also occured near the seamweld of some fittings(elbows) that welded in manufacture company & some low size weldolet materials are attracted with magnet.
Regards

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