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SA 302 Gr B - PV MANUFACTURING RECOMMENDATIONS

SA 302 Gr B - PV MANUFACTURING RECOMMENDATIONS

SA 302 Gr B - PV MANUFACTURING RECOMMENDATIONS

(OP)
Please,


Have somebody worked with the material specification SA 302 Gr B?

Is there any special recommendation about the Pressure Vessels fabrication (conformation , welding, heat treatment,...) using this material specification?

Thanks.

RE: SA 302 Gr B - PV MANUFACTURING RECOMMENDATIONS

Mancini,

The SA-302 grade B material you specified is basically a carbon steel material alloyed with magnesium (1.62% max) and molybdenum (.60% max.)  P-3 group 3 material.

Fabrication requirements are listed in section UCS of Section 8.  P3 grade 3 materials of all thickness are required to be PWHT UCS-56. PQR and WPS will need to be qualified for PWHT.  Full RT is required for nominal thickness above 3/4" per UCS-57.  See UCS-66 for impact testing requirements.

WBH

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