Hastelloy® & AL-6XN® - How Weld Quality Affects
2020-6-22u2002·u2002Differences in Welding Appearance. You and your customers should be aware that AL-6XN and Hastelloy C-22 welds look different than other stainless steel welds. An AL-6XN weld has non-uniform freeze lines and oxide islands in the weld bead, unlike a 316L weld. The oxide islands are dull or blue-gray and adhere to the surface.
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