Nov 16, 2024 #1 Johnwoo1991 Materials Nov 21, 2023 10 Is A182 F9 steel (P9) very much different from F91 (P91) steel of the 9-1-cr-mo-v family?
Nov 16, 2024 #2 weldstan Materials Jun 24, 2011 2,741 Yes. Especially regarding tensile and creep strength. Upvote 0 Downvote
Nov 16, 2024 #3 weldstan Materials Jun 24, 2011 2,741 I would also say that P91 heat treatment, welding and PWHT parameters are much more critical than for P9. Upvote 0 Downvote
I would also say that P91 heat treatment, welding and PWHT parameters are much more critical than for P9.
Nov 18, 2024 #4 ShabsRBI Materials May 3, 2023 20 Looking into the difference between P9 and P91 material, addition of around 0.18-0.25% Vanadium is done to P91 material to provide higher Tensile and Yield Strength. P9 P91 Tensile strength (ksi) 60 ksi 85 kis Yield strength (ksi) 30 ksi 60 ksi Thus looking above values, P91 has better high temperature Tensile and Yield strengths Upvote 0 Downvote
Looking into the difference between P9 and P91 material, addition of around 0.18-0.25% Vanadium is done to P91 material to provide higher Tensile and Yield Strength. P9 P91 Tensile strength (ksi) 60 ksi 85 kis Yield strength (ksi) 30 ksi 60 ksi Thus looking above values, P91 has better high temperature Tensile and Yield strengths
Friday at 1:39 AM #5 jessieleo99 Materials Aug 13, 2024 13 P91 has high creep strength and thermal stability and can be used for a long time in high-temperature and high-pressure environments above 600°C. Upvote 0 Downvote
P91 has high creep strength and thermal stability and can be used for a long time in high-temperature and high-pressure environments above 600°C.
