Accreditation Administration System:
Alloy steel plate and sheet A387 Grade 2 cl 1 and A387 Grade 2 cl 2 which be added by alloy elements such as
chromium and Molybdenum intended primarily for welded boilers and pressure vessels designed for elevated
temperature services.For these two steel grades,sometimes we also named as A387Gr2Cl1 and A387Gr2Cl2.
For ASME boiler and pressure vessel code applications,SA387 Grade 2 cl1 and SA387 Grade 2 Cl2,see the
relative specifications SA 387/SA 387M in section II of that code.As for boiler steel plate SA387 Grade 2 cl1/cl2,
the maximum thickness is only limited by the capacity of the composition to meet the specified mechanical
property requirements.Now our mill rolling maximum thickness for this steel grade shall be reach 250 millimeters.
For these alloy pressure vessel steel sheet and plate A387Gr2cl1 and A387Gr2Cl2,the minimum yield strength
shall be above 230 Mpa,and the tensile strength shall be within 380 to 550 Mpa.Besides the standard
ASTM A387/A387M,these alloy steel A387 Grade 2 shall be according to standards as A20/A20M_general
requirements for steel plates for boiler and pressure vessels,A370_Test methods and definitions for mechanical
testing of steel products.
Grade Chemical Composition Max Heat Analysis C Mn P S Si Cr Mo A387 Grade 2 0.05/0.21 0.55/0.80 0.035 0.035 0.15/0.40 0.50/0.80 0.45/0.60
