I recently performed a weld repair on a 16" Sa335 Gr.91 1.4 wall weld on an HP steam system. After Post weld Heat Treatment we performed HB hardness testing and found that the hardness was as follows:
Pipe 200 HB
Weld 225 HB
Fitting (elbow) 150 HB
We preped multiple areas on the elbow to verify...
I am looking for approx. 6' of 2" OD SA213 t-23 .220 to .265 wall tube material and have found in only bulk quantity's over seas. Anyone have some for sale? I have a HRSG in Nevada that has had failures with this material.