ASTM A387 Grade 11 Class 2 Plates for Pressure Vessels

ASTM A387 Grade 11 Class 2 Plates for Pressure Vessels

As a quality chrome moly steel, A387 Grade 11 Class 2 is used in a variety of industries and is highly effective, particularly in the oil, gas and chemical industry, where liquids and gases are often stored at high temperature (see pressure vessels).

The higher levels of chromium also provide excellent corrosion and oxidation resistance.

Please refer to our technical specifications below for ASTM A387 Grade 11 Class 2.

 

Chromium & Molybdenum content (according to the ASTM specification):

Designation Nominal Chromium Content (%) Nominal Molybdenum Content (%)
A387 Grade 11 1.25% 0.50%

 

Tensile Requirements for Class 2 Plates

Designation Requirement Grade 11
A387 Grade 11 Tensile strength, ksi [MPA] 75 to 100 [515 to 690]
  Yield strength, min, ksi [MPa]/(0.2% offset) 43 [310]
  Elongation in 8 in. [200mm], min % 18
  Elongation in 2 in. [50mm], min, % 22
  Reduction of area, min %  

 

Chemical Requirements: 

Carbon (C) %
Heat Analysis:
Product Analysis:
0.05 – 0.17
0.04 – 0.17
Manganese (Mn) %
Heat Analysis:
Product Analysis:
0.40 – 0.65
0.35 – 0.73
Phosphorus (P) %
Heat Analysis:
Product Analysis:
0.035
0.035
Sulphur (S) (Max) %
Heat Analysis:
Product Analysis:
0.035
0.035
Silicon (Si) %
Heat Analysis:
Product Analysis:
0.50 – 0.80
0.44 – 0.86
Chromium (Cr) %
Heat Analysis:
Product Analysis:
1.00 – 1.50
0.94 – 1.56
Molybdenum (Mo) %
Heat Analysis:
Product Analysis:
0.45 – 0.65
0.45 – 0.70

(Maximum values unless stated otherwise)

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