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  • A204 Grade A
  • A204 Grade A

A204 Grade A,A204GrA

  • Steel Standard: ASTM A204/A204M
  • Rolling Type: Boiler steel plate,Pressure vessel steel plate
  • Thickness: 6mm-300mm
  • Width: 1500mm-4200mm
  • Length: 3000mm-18000mm
  • Heat Treatment: As Rolled/Normalised/Stress relieved
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■ Overview
Steel standard ASTM A204/A204M and similar steel standard ASME SA204/SA204M which specification for pressure vessel steel plates,molybdenum alloy steel plate A204 Grade A,A204 Grade B,A204 Grade C and SA204 Grade A,SA204 Grade B,SA204 Grade C.For thickness equal and under 40mm,boiler steel plate A204 Grade A shall be supplied normally in the as-rolled delivery condition.The plates also may be ordered in Normalised or stress relieved or both.For thickness above 40mm,pressure vessel steel plate SA204 Grade A shall be in Normalised heat treatment. 
■ Full Data
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
■ Techicals
 ► Mechnical property for A204GrA boiler steel:

Yield strength (≥Mpa) Tensile strength (Mpa) Elongation in ≥,%
255 450-585 200mm 50mm
19 23
Chemical composition for A204 Grade A boiler steel (Heat Analysis Max%)

Main chemical elements composition of A204 Grade A
Thickness(mm) C Si Mn P S Mo
T≤25 0.18 0.15-0.40 0.90 0.035 0.035 0.45-0.60
25<T≤50 0.21
50<T≤100 0.23
T>100 0.25
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