ASME SA387 Grade 12 Class 2

Engineered for use in elevated temperature service, ASME SA387 Grade 12 is a chrome molybdenum carbon alloy steel for use in weldable pressure vessels and industrial boilers. The material benefits from added chromium which provides excellent corrosion and oxidation resistance making it ideal for sour service applications in the oil and gas industry. 

Specifications

Chromium & Molybdenum content (according to the ASME specification)

Designation Nominal Chromium Content (%) Nominal Molybdenum Content (%)
SA387 Grade 12 1.00% 0.50%


Tensile Requirements for Class 2 Plates 

Designation Requirement Grade 12
SA387 Grade 12 Tensile strength, ksi [MPA] 65 to 85 [450 to 585]
Yield strength, min, ksi [MPa]/(0.2% offset) 40 [275]
Elongation in 8 in. [200mm], min % 19
Elongation in 2 in. [50mm], min, % 22
Reduction of area, min % ---


Chemical Requirements 

Element   Chemical Composition (%)
    ASME SA387 Grade 12
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 0.15 - 0.40
Product Analysis 0.13 - 0.45
Chromium: Heat Analysis 0.80 - 1.15
Product Analysis 0.74 - 1.21
Molybdenum Heat Analysis 0.45 - 0.60
Product Analysis 0.40 - 0.65



 

  • Our quality
    assurance
    program ..
  • Sevenstar Steel is ISO Certified company.. ..
  • We are Associate..

    •