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  • A387Gr11Cl1 steel plate
  • A387Gr11Cl1 steel sheet


  • Steel Standard: ASTM A387/A387M
  • Rolling Type: Boiler steel plate,Pressure vessel steel plate
  • Thickness: 6mm-300mm
  • Width: 1500mm-4200mm
  • Length: 3000mm-18000mm
  • Heat Treatment: Normalized+Tempered
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■ Overview
A387 Grade 11 CL1 boiler steel plate are under steel specification standard ASTM A387/A387M for pressure vessel steel plates,alloy steel with Chromium-Molybdenum.The equal steel plate SA387 Grade 11CL 1 is under American steel stamdard SA 387/SA 387M.Alloy steel plate A387Gr11CL1 intended primarily for welded boilers and pressure vessels&tanks.Rolling maximum thickness of plates is limited only by the capacity of the composition to meet the specified mechanical property requirements.  
■ Full Data
  Technical Requirements & Additional Services for A387GR11CL1 steel plate:
♦  High tension test
♦  Low temperature impacting test
♦  Normalised and Tempered Heat treatment
♦  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 A387Gr11Cl1 boiler steel plate:

Yield strength (≥Mpa) Tensile strength (Mpa) Elongation in ≥,%
240 415-585 200mm 50mm
19 22

Chemical composition for A387 Grade 11 Cl1 boiler steel plate(Product Analysis Max%)

Main chemical elements composition of A387Gr11Cl1
C Si Mn P S Mo Cr
0.04-0.17 0.44-0.86 0.35-0.73 0.035 0.035 0.40-0.70 0.94-1.56
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