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A355 Gr.P91 have resistant high and low temperature or resistant Corrosion-resistant in the oil, chemical, electric power industry
Grade | UNS | C≤ | Mn | P≤ | S≤ | Si≤ | Cr |
P91 | K91560 | 0.08~0.12 | 0.30~0.60 | 0.02 | 0.01 | 0.20~0.50 | 8.00~9.50 |
Mo | V | Ni | Al | N | Nb | ||
0.85~1.05 | 0.18~0.25 | 0.40; | 0.04 | 0.030~0.070 | 0.06~0.10 |