Supplemental hardness testing

[WE91]

ASME Section IX

I Have a WPS that is qualified up to 8" but the hardness limit is slightly above client requirement. Would a retest on a 1/2" coupon for hardness testing allow me to maintain my upper limit of 8" when if I combine the PQRs in accordance with QW200.4?

 

[david339933]

Yes, ASME doesn't care about the hardness.

 

[r6155]

PWHT is required?

Regards

 

[WE91]

Yes PWHT is required

 

[r6155]

You should take hardness before and after PWHT.
There may be something wrong with the PWHT.
You've done it?

Regards

 

[WE91]

PWHT is fine hardness readings are well within MRO175, MR0103, and SP0472, but client specs are restrictive.

 

[DVWE]

You can increase the PWHT temperature slightly on your supplementary test coupon to accommodate your customer’s hardness requirements; as long as you stay below the lower transformation temperature. This is per ASME Section IX.

The devil is in the details; she also wears prada.

 

[r6155]

I suggest increase the holding time and slower cooling rate of PWHT.

Regards