Chemical composition and advantages of P91 alloy steel
P91 alloy steel is equivalent to Chinese steel grade 10Cr9Mo1VNbN. P91 steel not only has high oxidation resistance and high temperature steam corrosion resistance. Because of its comprehensive properties such as high temperature endurance strength, thermal stability and high temperature creep resistance, P91 steel pipes are widely used in Superheater, reheater and main steam pipe of power plant boiler.
P91 alloy steel chemical composition:
C: 0.08 - 0.12, Mn: 0.30 - 0.60, Si: 0.20 - 0.50, P: ≤ 0.02, Sulfur S: ≤ 0.01;
Chromium Cr: 8.0 - 9.5, Mo: 0.85 - 1.05, V: 0.18 - 0.25, NB: 0.06 - 0.1, N: 0.03 - 0.07, Al: ≤ 0.04 Ni: ≤ 0.4
Application of P91 alloy steel:
Because of its oxidation resistance, high temperature steam corrosion resistance, impact toughness, high and stable permanent plasticity and thermal strength, P91 steel pipes can be used for high temperature superheater and reheater of subcritical supercritical boiler with wall temperature ≤ 625℃, as well as high temperature header and steam pipe with wall temperature ≤ 600℃. Material P91 can also be used to manufacture nuclear electric heat exchanger and furnace pipe of petroleum cracking unit.
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EN 10210 S355J2H hollow section
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GB/T 18248 35CrMo seamless pipe
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GB/T 18248 34CrMo4 seamless pipe
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GB/T 18248 30CrMo seamless pipe
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GB/T 8163 Q345E seamless alloy s
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GB/T 8163 Q345D seamless alloy s
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GB/T 8163 Q345C seamless alloy s
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GB/T 8163 Q345B seamless steel p
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GB/T 8163 20# seamless steel pip
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EN 10297 42CrMo4 seamless pipe a
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Contact
- Henan BEBON Iron&Steel co., ltd.
- 0086-371-86151827
- 0086-371-86011881
- [email protected]
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