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ASTM A182 F51 Forgings Used in ASME BPVC

Applicability and Temperature limits

The ASTM A182/ASME SA-182 F51 forging refers to forged flange, forged fitting or other pressure components made from duplex stainless steel ASTM A182 Grade F51(UNS S31803). The material has a nominal composition of 22Cr–5Ni–3Mo–N. Its P-Number and Group Number are 10H and 1, respectively. The ASTM A182 F51 forgings can be applied to ASME Boiler and Pressure Vessel Code Section I, Section III, Section VIII-1,  Section VIII-2, Section XII with maximum temperature limits of 600°F, no permitted, 600°F,  400 °F , 600°F, respectively.

Maximum Allowable Stresses

The maximum allowable stresses of ASME Boiler and Pressure Vessel Code Section I, Section III, Section VIII-1. Section XII in tension for ASTM A182 F51 forgings at elevated temperatures are tabulated in Table A-1 below for design calculation.

*Temp., °F*S, ksi
-20 to 10025.7
150-
20025.7
250-
30024.8
40023.9
50023.3
60023.1
*Table A-1: maximum allowable stresses, S, ksi, at metal temperature, °F.

The maximum allowable stresses of ASME Boiler and Pressure Vessel Code Section VIII-2 in tension for ASTM A182 F51 forgings at elevated temperatures are tabulated in Table A-2 below for design calculation.

*Temp., °F*S, ksi
-20 to 10037.5
15037.5
20037.5
25037.0
30035.8
35034.9
40034.2
*Table A-2: maximum allowable stresses, S, ksi, at metal temperature, °F.

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