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  • P275NH PLATE
  • P275NH STEEL

P275NH

  • Steel Standard: EN 10028-3
  • Rolling Type: Pressure vessel steel plate,Boiler steel plate
  • Thickness: 6mm-350mm
  • Width: 1500mm-4200mm
  • Length: 3000mm-18000mm
  • Heat Treatment: Normalised
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■ Overview
P275NH boiler steel plate under steel standard EN 10028-3 are mainly used to build pressure vessels and boilers and liquid tanks.For these two pressure vessel steels P275NH and P275NL1,heat treatment for Normalized have to be done for steel plates after production.Boiler steel plate P275NH shall be done low temperature impacting at minus 20 centi degree.For guarantee the usage safety of pressure vessel steel plates,boiler steel plates P275NH would accept ultrasonic examination after rolling.
■ Full Data
Technical Requirements & Additional Services:
♦ High tension test
♦ Low temperature impacting test
♦ Simulated post-welded heat treatment (PWHT)
♦ Ultrasonic test under EN 10160,ASTM A435,A577,A578
♦ Issued Orginal Mill test certificate under EN 10204 FORMAT 3.1/3.2
♦ Shot blasting and Painting,Cutting and welding as per end user’s demands 
■ Techicals
Mechnical property for P275NH pressure vessel steel:

Thickness(mm) Yield strength (≥Mpa) Tensile strength (Mpa) Elongation in ≥,%
T≤16 275 390-510 24
16<T≤40 265
40<T≤60 255
60<T≤100 235 370-490 23
100<T≤150 225 360-480
150<T 215 350-470

Chemical composition for P275NH pressure vessel steel (Heat Analysis Max%)

Main chemical elements composition of P275NH
C Si Mn P S Al (total) N Cr
0.16 0.40 0.80-1.50 0.025 0.015 ≥0.020 0.012 0.30
Cu Mo Nb Ni Ti V Nb+Ti+V
0.30 0.08 0.05 0.50 0.03 0.05 0.05
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