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  • P355Q PLATE
  • P355Q STEEL

P355Q

  • Steel Standard: EN 10028-6
  • Rolling Type: Pressure vessel steel plate,Boiler steel plate
  • Thickness: 6mm-350mm
  • Width: 1500mm-4200mm
  • Length: 3000mm-18000mm
  • Heat Treatment: Quenched and Tempered
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■ Overview
Quenched and tempered boiler steel plate P355Q under steel standard EN 10028-6 which is mainly used for building boilers and pressure vessels.In the steel standard EN 10028-6,steel grade P355Q,P460Q,P500Q,P690Q means the minus 20 centi degree impacting test,P355QH,P460QH,P500QH,P690QH means the minus 20 centi degree,P355QL1,P460QL1,P500QL1,P690QL1 means minus 40 centi degree,P355QL2,P460QL2,P500QL2,P690QL2 means doing minus 60 low temperature impacting test when 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 P355Q pressure vessel steel:

Thickness (mm)
P355Q ≤ 50 > 50 ≤ 100 > 100
Yield strength (≥Mpa) 355 335 315
  ≤ 100 > 100
Tensile strength (Mpa) 490-630 450-590

Chemical composition for P355Q pressure vessel steel (Heat Analysis Max%)

Main chemical elements composition of P355Q
C Si Mn P S B N Cr
0.16 0.40 1.50 0.025 0.015 0.005 0.015 0.30
Cu Mo Nb Ni Ti V Zr
0.30 0.25 0.05 0.50 0.03 0.06 0.05
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