Hardness Testing for USN S31803 to A333 Gr6 PQR

[OZWelder]

Hello all,

I have a PQR 22%Cr DSS to A333 Gr6 pipe I want to get this PQR qualified to AWS D1.6 and ASME IX.
In the client spec there is requirement for hardness testing for A333 Gr6 at around less then or equal to 250 and for the DSS the hardness is equal to or less then around 350.

What should I tell the lad to test the joint that is one side DSS and one sire A333 material?
Do you usual hardness test on dissimilar weld joints like this?

I have look at table 331.1 in B31.3 but it shows no value for max hardness in p 10H material and P 1. This I think this is maybe more of a after heat treatment thing though. I have no PWHT, wall thinness is 7.11mm

 

[david339933]

Sounds more like a NACE requirement than a Code requirement.

 

[EdStainless]

I do hardness on 2205 welds just as a reality check (did they use the right filler?).
I have used 30HRC or 290HB as a max.
But since these are not duplex welds it is hard to imagine why hardness would matter.
What is the filler?

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P.E. Metallurgy, consulting work welcomed

 

[weldstan]

It would appear that your client requires a hardness travers from the fusion line thru the HAZ's of both materials Root and Cap? What method of hardness testing will you do? HV10, HV5, Rockwell C? or other. Ask the Client. The test lab should have no problem performing the tests.