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

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











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