ASTM A299 GR.B Alloy Pressure vessel steel plate

ASTM A299 GR.B Alloy Pressure vessel steel plate

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ASTM A299 /A299M covers manganese, silicon carbon steel plate for used in welded boiler and others pressure vessels in steel grade A299 Grade A and A299 Grade B.

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    • Commodity name: ASTM A299 GR.B Alloy Pressure vessel steel plate

    ASTM A299 /A299M covers manganese, silicon carbon steel plate for used in welded boiler and others pressure vessels in steel grade A299 Grade A and A299 Grade B.

    ASTM A299 GR.B Alloy Pressure vessel steel plate Descriptions:

    ASTM A299 Grade B boiler steel plate with minimum yield strength above 325 Mpa,and tensile strength within 550-690 Mpa.Comparing with pressure vessel steel plate A299 Grade A,yield strength above 290 Mpa and tensile strength within 515-655 Mpa,pressure vessel steel plate SA299 Grade B owned a higher values.Additional technical requirements for boiler steel plates SA299 Grade B such as simulated post-weld heat treatment,low temperature impcting test,drop weight test and high temperature tension test.Ultrasonice test have to be done for SA299 Grade B boiler steel plate when rolling in our steel mill.

    Chemical Composition and Mechanical Properties:

    A299 Grade B Chemical Composition
    Grade The Element Max (%)
    C Si Mn P S Mo
    A299 GR.B 0.28-0.30 0.13-0.45 0.84 -1.62 0.035 0.035 -


     

    Grade A299 Grade B Mechanical Property
    Thickness Yield Tensile Elongation
    A299 GR.B mm Min Mpa Mpa Min  %
    t≦50 310-325 550-690 19
    50<t≦200 310-325 550-690 19


    Technical Requirements & Additional Services:
    ♦  High tension test
    ♦  Low temperature impacting test
    ♦  Normalised for thick plates over 40mm
    ♦  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

    Key words:
    • ASTM A299 GR.B Alloy Pressure vessel steel plate

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