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Inert welding gas monitored

from Engineer Live

Prior to inert gas welding (weld purging), the oxygen content must be reduced (purged) to a level as low as 100 ppm for stainless steels and as low as 50 ppm for zirconium and titanium. When oxygen levels are too high, the parent materials will suffer from a loss of corrosion resistance and metallurgical imperfections. more


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