A 387 Gr11 CL2 Pressure Vessel Plate-Steel Plate

A 387 Gr11 CL2 Pressure Vessel Plate-Steel Plate 

Application

Pressure Vessel Plate-Alloy Steel Plates intended primarily for welded boilers and pressure vessels designed for elevated temperature service.

Quality Standard

A 387/A 387M – 03 Pressure Vessel Plates, Alloy Steel, Chromium-Molybdenum.

Chemical Composition(%)

Steel Grade            C                  Si                  Mn               P                  S                      Cr                 Mo

Gr11 CL2         0.04-0.17     0.44-0.86      0.35-0.73    0.035 max    0.035 max    0.94-1.56      0.40-0.70

Heat Treatment
Except for Grades 91 and 911, all pressure vessel plates shall be thermally treated either by annealing, normalizing and tempering, or when permitted by the purchaser, accelerated cooling from the austenitizing temperature by air blasting or liquid quenching, followed by tempering. Minimum tempering temperatures shall be as follows:
Grade                                       Temperature, °F [°C]
2, 12, and 11                              1150 [620]
22, 22L, 21, 21L, and 9              1250 [675]
5                                                  1300 [705]

Mechanical Properties( T=20°C if not differently stated )

Condition      Tensile Strength Rm (Mpa)      Yield Strength R2 (Mpa)     Elongation in 2 in or 50 mm  A(%)

+N+T                      515-690                                         310 min                                   22 min

+N+T: Normalizing and Tempering.

Capacity

1,000 ton per month.

Test

Chemical analysis, Mechnical analysis, Ultrasonic testing, Hardness testing, Surface quality and Dimension report.

Package

Bundle or piece.

Mill’s Test Certificate

EN 10204/3.1 with all relevant data reg. chem. composition, mech. properties and results of testing.