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ASTM A387Gr.11 steel
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ASTM A387Gr.11 steel

ASTM A387Gr.11 steel

Shanghai Katalor Enterprises Co., Ltd supplies ASTM A387 GR11CL1 and A387 GR11 CL2 pressure vessel steel plate. The grade A387 GR11 CL1 and A387 GR11 CL2 are pressure vessel with chromium molybdenum alloy plates under the standard ASTM A387/A387M. This standard ASTM A387/A387M is applicable for welding boiler and pressure vessel with chromium molybdenum alloy plates working under high temperature.

A387 Gr.11 steel plate heat treatment:

For A387 Gr.11 steel plate, all the plates need to do heat treatment, annealing, normalizing or tempering. When the buyer accept, we can accelerate cooling by blowing air or quenching(austenitic), then do tempering. For A387 Gr.11 steel sheet, the min tempering temperature is 620℃.

A387Gr.11 steel chemical composition:

Grade Chemical composition %
C Mn P S Si Cr Mo
A387 Gr.11 0.04-0.17 0.35-0.73 ≤0.035 ≤0.035 0.44-0.86 0.94-1.56 0.40-0.70

A387Gr.11 steel mechanical properties:

Grade Yield strength
min
Tensile strength Elongation min %  
Mpa Mpa T:200mm T:50mm

 

A387Gr.11 230 380-550 18 22

A387 steel specification covers chromium and Molybdenum pressure vessel plate in grade A387 Grade 2 Class 1, A387 Grade 2 Class 2, A387 Grade 12 Class 1, A387 Grade 12 Class 2, A387 Grade 11 Class 1, A387 Grade 11 Class 2, A387 Grade 22 Class 1, A387 Grade 22 Class 2, A387 Grade 22L Class 1, A387 Grade 21 Class 1, A387 Grade 21 Class 2, A387 Grade 21L Class 1, A387 Grade 5 Class 1, A387 Grade 5 Class 2, A387 Grade 9 Class 1, A387 Grade 9 Class 2, A387 Grade 91 Class 2 and A387 Grade 911 Class 2.

Shanghai Katalor Enterprises Co., Ltd is the core agent of Wuyang Mill of HBIS, specialized in super thick boiler steel plate, cooperated with ABS, BV, DNV, CCS, GL, LR, KR, NK, and RINA Classification Societies to approve the super thickness plate up to 300mm at present..

We sincerely hope new and regular clients come to visit our mill and inquiry from Katalor Enterprises.

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