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ASTM A387
ASTM A387 Grade 5 Class 2 | ASTM A387 Grade 9 Class 2 | ASTM A387 Grade 11 Class 2
ASTM A387 Grade 12 Class 2 | ASTM A387 Grade 22 Class 2 | ASTM A387 Grade 91 Class 2



ASTM A387 Grade 11 Class 2 chrome moly steel plates from Masteel UK Ltd. 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...

Equivalents

BS EN ASTM/ASME DIN
621 B ––– A387-11-2 –––


Specifications

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

Element   Chemical Composition (%) inc. Grade UNS No.
    Grade 11 (UNS: K11789)
Carbon: Heat Analysis: 0.05 - 0.17
  Product Analysis: 0.04 - 0.17
Manganese: Heat Analysis: 0.40 - 0.65
  Product Analysis: 0.35 - 0.73
Phosphorus: Heat Analysis: 0.035
  Product Analysis: 0.035
Sulphur (max): Heat Analysis: 0.035
  Product Analysis: 0.035
Silicon: Heat Analysis: 0.50 - 0.80
  Product Analysis: 0.44 - 0.86
Chromium: Heat Analysis: 1.00 - 1.50
  Product Analysis: 0.94 - 1.56
Molybdenum: Heat Analysis: 0.45 - 0.65
  Product Analysis: 0.45 - 0.70


Tension Test Requirements:

Material shall be tested using a test specimen will confirm to the tensile requirements as outlined in Table 2.

Other requirements:

The following requirements and testing procedures (which are not mandatory) are considered suitable for Chrome Molybdenum steel:
  • Vacuum treatment
  • Product Analysis
  • Additional Tension Test
  • Charpy V-Notch Impact Test
  • Drop Weight Test
  • High Temperature Tension Test
  • Ultrasonic Examination
  • Magnetic Particle Examination

To find out more about Masteel's services and ASTM A387 Grade 11 Class 2 steel plates which we can supply directly to you, click  CLICK HERE  to contact us.










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