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  • Q345R steel
  • Q345R plate

Q345R

  • Steel Standard: GB 713
  • Rolling Type: Boiler steel plate,Pressure vessel steel plate
  • Thickness: 6mm-450mm
  • Width: 1500mm-4200mm
  • Length: 3000mm-18000mm
  • Heat Treatment: As Rolled/Controlled Rolling/Normalised
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■ Overview
Boiler steel plate Q345R is the most used materials to build specified elevated boilers and pressure vessels.Q345R owned the minimum yield strength at 345 Mpa for thin thickness and tensile strength above 510 Mpa.The best equivalent steel grade with Q345R is A516 Grade 70 in specification ASTM A516/A516M.
■ 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 Q345R Pressure vessel steel:

Thickness (mm)
Q345R > 3 ≤ 16 > 16 ≤ 36 > 36 ≤ 60 >60 ≤ 100 >100 ≤ 150 >150
Yield strength (≥Mpa) 345 325 315 305 285 265
Tensile strength (Mpa) 510-640 500-630 490-620 480-610 470-600

Chemical composition for Q345R Pressure vessel steel (Heat Analysis Max%)

Main chemical elements composition of Q345R
C Si Mn P S Alt (min.)
0.20 0.55 1.20-1.60 0.025 0.015 0.020

 

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