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"Base Metal" Terminology

"Base Metal" Terminology

"Base Metal" Terminology

When reading UHA-51 and the terms "base metal, weld metal and HAZ" are used, is this referring to components that are only welded? In other words, non-welded pressure containing components do not apply?


RE: "Base Metal" Terminology

I am definitely no expert on ASME VIII but I would say it is applicable to welded and non welded pressure containing components.
This is from UHA-51
(d) Exemptions from Impact Testing for Base Metals and
HAZs. Impact testing is not required for Table UHA-23
base metals for the following combinations of base metals
and HAZs (if welded) and MDMTs, except as modified in

There are more experienced vessel guys on the forum who can probably assist you further,

RE: "Base Metal" Terminology

No. Base metals refer to materials which may be joined or left unwelded.

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