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P92 alloy steel pipe is on the basis of P91 steel, appropriate to reduce the content of Mo element, joined the amount of W at the same time, the material of molybdenum (Mo + 0.5 W) when increased to about 1.5% from 1% of P91 steel, the steel also joined the trace phosphorus, after the alloying modification, compared with 9% Cr series of other common heat resistant steel, high temperature corrosion resistance and oxidation resistance are similar, but the high temperature strength and creep performance is also improved.
P92 alloy tube chemical composition:
C: 0.07 ~ 0.13
Mn: 0.30 ~ 0.60
P 0.020 or less
S 0.010 or less
Si 0.50 or less
Cr: 8.5 ~ 9.5
W: 1.50 ~ 2.00
Mo: 0.30 ~ 0.60
V: 0.15 ~ 0.25
Nb: 0.04 ~ 0.09
N: 0.030 ~ 0.070
B: 0.001 ~ 0.006
Al 0.040 or less
Ni 0.40 or less
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