SA387Gr21CL1,SA387Gr.21CL1,SA387 Gr 21 CL1 Steel PLATE

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SA387Gr21CL1,SA387Gr.21CL1,SA387 Gr 21 CL1 Steel PLATE
 
Unitedsteel mill produced super thickness plate for ASME SA387 Gr 21 CL 1 is a chromium molybdenum alloy steel plate intended primarily for welded boiler and pressure vessels designed of elevated temperature service. The Cr content 3.00 % and the Mo content 1.00 %.
Each grade except grade 21L, Grade 22L, Grade 91 and Grade 911 is available in two classes of tensile strength levels. Grade 91 and Grade 911 are available only as Class 2.
 
 
 
SA387 Gr.21 CL.1 Chemical Composition
Grade The Element Max (%)
C Si Mn P S Cr Mo
SA387 Gr.21 Cl.1 0.04-0.15 0.50 0.25-0.66 0.035 0.035 2.63-3.37 0.85-1.15
Carbon Equivalent: Ceq = 【C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15】%
 
Grade SA387 Gr.12 CL.1 Mechanical Property
Thickness Yield Tensile Elongation
SA387 Gr.21 Cl.1 mm Min Mpa Mpa Min  %
t≦50 205 415-585 18
50<t≦200 - - -
 
Equivalent steel grade of SA387 Gr.21 Cl.1
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