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ASME SA387 Grade 5 Class 2 | ASME SA387 Grade 9 Class 2 | ASME SA387 Grade 11 Class 2
ASME SA387 Grade 12 Class 2 | ASME SA387 Grade 22 Class 2
ASME SA387 Grade 91 Class 2

Masteel are stockists and suppliers of SA387 Grade 22 Class 2 chrome molybdenum plates for weldable pressure vessels and boilers. We supply ASME SA387 Grade 22 Class 2 plates to global fabricators serving the oil, gas and petrochemical industry.

These industries require a pressure vessel grade steel which works well in elevated temperatures and our material serves this purpose well. And with good corrosion and oxidation resistance, SA387 Grade 22 Class 2 plates are a good option for sour gas environments too.

Masteel stock SA387 Grade 22 carbon alloy plates and are able to dispatch worldwide.


622-515B 10 CRMO910 SA387-22-2 10 CRMO910


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

Designation Nominal Chromium
Content (%)
Nominal Molybdenum
Content (%)
SA387 Grade 22 2.25% 1.00%

Tensile Requirements for Class 2 Plates

Designation: Requirement: Grade 22
SA387 Grade 22 Tensile strength, ksi [MPA] 75 to 100 [515 to 690]
  Yield strength, min, ksi [MPa]/(0.2% offset) 45 [310]
  Elongation in 8 in. [200mm], min % ...
  Elongation in 2 in. [50mm], min, % 18
  Reduction of area, min % 45 (measured on round specimen)
40 (measured on flat specimen)

Chemical Requirements

Element   Chemical Composition (%)
    SA387 Grade 22
Carbon: Heat Analysis: 0.05 - 0.15
  Product Analysis: 0.04 - 0.15
Manganese: Heat Analysis: 0.30 - 0.60
  Product Analysis: 0.25 - 0.66
Phosphorus: Heat Analysis: 0.035
  Product Analysis: 0.035
Sulphur (max): Heat Analysis: 0.035
  Product Analysis: 0.035
Silicon: Heat Analysis: 0.50 max
  Product Analysis: 0.50 max
Chromium: Heat Analysis: 2.00 - 2.50
  Product Analysis: 1.88 - 2.62
Molybdenum: Heat Analysis: 0.90 - 1.10
  Product Analysis: 0.85 - 1.15

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

Find out more about our ASME SA387 Grade 22 Class 2 steel plates – please click  CLICK HERE  to contact us.

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Equivalent Grades :

Our Steel Products :

Please click on one of the links below...

  Pressure Vessel Steel
  Boiler Quality Steel
  HIC Resistant Steel
  Chrome Molybdenum Steel
  Stainless Steel
  Composite Clad Plates
  Weathering Steels
  Structural Steels
  Steel Sections
  High Strength, Low Alloy Steel (HSLA)
  Pipes & Tubulars
  Heat Resistant Steel

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