Comparable base metal to Inco 82

[jrtei]

Need to run a weld buttering procedure qual to Section IX in accordance with QW-283.4(b). This section states that I may use "any P-number material that nominally matches the chemical analysis of the buttering weld metal". The buttering weld metal is Inco 82 (ERNiCr-3). Has anyone done this before and what did you use for the base metal? Since the Inco 82 is an F43 can I just use any P43 base metal? Is that what is meant by nominal? If so I was considering using Inco 600. Or is there some particular min/max range I should be considering for each element of the chemical analysis?

 

[EdStainless]

What will it be in your application?

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P.E. Metallurgy

 

[jrtei]

Ed
There is an existing P5A boss that had been previously buttered with Inco 82 by another company. Now we are attaching a P8 nozzle to that butter with Inco 82. This is the reason for QW-283.4(b) being invoked. So I cannot run a PQR with P8 to Inco 82 base metal as Inco 82 base metal is not available. So I need to substitute a P43 (I am assuming) base metal in place of the Inco 82 for the PQR.