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  • 18MnMoNbR steel
  • 18MnMoNbR plate

18MnMoNbR

  • Steel Standard: GB 713
  • Rolling Type: Boiler steel plate,Pressure vessel steel plate
  • Thickness: 30mm-300mm
  • Width: 1500mm-4200mm
  • Length: 3000mm-18000mm
  • Heat Treatment: Normalised+Tempered
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■ Overview
Mo-alloy boiler steel plate 18MnMoNbR under steel standard GB 713 is mainly used for elevated boilers and pressure vessels.Normalisation plus Tempering heat treatment shall be done for boiler steel 18MnMoNbR for guarantee steel properties.
■ Full Data
Technical Requirements & Additional Services:
♦ High tension test
♦ Cutting and welding as per end user’s demands
♦ Simulated post-welded heat treatment (PWHT)
♦ Rolling under standard NACE MR-0175 (HIC+SSCC)
♦ Issued Orginal Mill test certificate under EN 10204 FORMAT 3.1/3.2
♦ Ultrasonic test under GB/T2970,JB4730,EN 10160,ASTM A435,A577,A578
■ Techicals

Mechnical property for 18MnMoNbR Pressure vessel steel:

Thickness (mm)
18MnMoNbR > 30 ≤ 60 >60
Yield strength (≥Mpa) 400 390
Tensile strength (Mpa) 570-720

Chemical composition for 18MnMoNbR Pressure vessel steel (Heat Analysis Max%)

Main chemical elements composition of 18MnMoNbR
C Si Mn P S Nb Mo
0.22 0.15-0.50 1.20-1.60 0.020 0.010 0.025-0.050 0.45-0.65

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