ASTM A533 Grade B cl3

ASTM A533 Grade B cl3 owned a higher yield strength and tensile strength than boiler steel plate A533 GrB cl1 and pressure vessel steel plate A533 GrB CL2. With alloy manganese-molybdenum-nickel elements, pressure vessel steel plate A533GrBcl3 is used for welded boilers under Quenched and tempered. When rolling boiler steel plate SA533 GrB cl3, reference steel specifications including ASTM A20/A20M which is for boiler steel plate generally, ASTM A533/A533M, ASTM A435/A435M, ASTM A578/A578M.

Technical Requirements & Additional Services:

  • High tension test
  • Conform to ASTM A20/A20M
  • Low temperature impacting test
  • Simulated post-welded heat treatment (PWHT)
  • 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

Mechnical property for A533GrBCl3 boiler steel:

Yield strength (≥Mpa) Tensile strength (Mpa) Elongation in ≥,%
570 690-860 200mm 50mm

Chemical composition for A533 Grade B Cl3 boiler steel (Product Analysis Max%)

Main chemical elements composition of A533GrBCl3
C Si Mn P S Mo Ni
0.25 0.13-0.45 1.07-1.62 0.035 0.035 0.41-0.64 0.37-0.73
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