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  • 20R steel
  • 20R plate

20R

  • 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
Now steel grade 20R is replaced by new grade GB 713 Q245R.20R boiler steel plate is normally used for building pressure vessels in pressure vessel manufacturers’s plants.Xinsteel’s high property boiler steel 20R are offering many boiler plants in China and overseas now.
■ 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 20R Pressure vessel steel:

Thickness (mm)
20R > 3 ≤ 16 > 16 ≤ 36 > 36 ≤ 60 >60 ≤ 100 >100
Yield strength (≥Mpa) 245 235 225 205 185
Tensile strength (Mpa) 400-520 390-510 380-500

Chemical composition for 20R Pressure vessel steel (Heat Analysis Max%)

Main chemical elements composition of 20R
C Si Mn P S Alt (min.)
0.20 0.35 0.50-1.00 0.025 0.015 0.020
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