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  • A203GrB steel
  • A203GrB plate

A203 Grade B,A203GrB

  • Steel Grade: A203 Grade B,A203GrB
  • Steel Standard: ASTM A203/A203M
  • Rolling Type: Boiler steel plate,Pressure vessel steel plate
  • Thickness: 6mm-300mm
  • Width: 1500mm-4200mm
  • Length: 3000mm-18000mm
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■ Overview
A203 Grade B boiler steel plate with minimum yield strength at 275 Mpa,higher than A203 Grade A pressure vessel steel plate at 255 Mpa,and tensile strength shall be above 480 Mpa for steel plate SA203 Grade B.Ultrasonic examination for pressure vessel steel plate A203 Grade B,there are A 435/A 435M,A 577/A 577M,A 578/A 578M and A578/A578M including three levels,A578-A,A578-B,A578-C.



■ Full Data
Technical Requirements & Additional Services:
♦ High tension test
♦ Low temperature impacting test
♦ 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
♦ Shot blasting and Painting,Cutting and welding as per end user’s demands  
■ Techicals
Mechnical property for A203 Grade B alloy steel:

Yield strength (≥Mpa) Tensile strength (Mpa) Elongation in ≥,%
275 485-620 200mm 50mm
17 21

Chemical composition for A203 Grade B alloy steel (Heat Analysis Max%)

Main chemical elements composition of A203 Grade B
Thickness(mm) C Si Mn P S Ni
T≤50 0.21 0.15-0.40 0.70 0.035 0.035 2.10-2.50
50<T 0.24 0.80
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