ASME SA387 Grade 5 Class 2

ASME SA387 Grade 5 Class 2 – a high quality chrome molybdenum alloy steel plate intended specifically for use in weldable carbon steel pressure vessels at elevated temperatures. Added molybdenum gives the material greater temperature tensile strength and the chromium provides improved corrosion resistance.
We supply SA387 Grade 5 Class 2 plates from our own stockholding in Birmingham or directly from the mill. All plates come with mill test certification and individual stampings.
 

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

DesignationNominal Chromium Content (%)Nominal Molybdenum Content (%)
A387 Grade 55.00%0.50%

Mechanical Properties of SA387 Grade 5 Class 2

DesignationRequirementGrade 5
A387 Grade 5Tensile 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 Composition of ASME SA387 Grade 5 Class 2

  
Carbon (C)%
Heat Analysis:
Product Analysis:
0.15 max
0.15 max
Manganese (Mn)%
Heat Analysis:
Product Analysis:
0.30 - 0.60
0.25 - 0.66
Phosphorus (P)%
Heat Analysis:
Product Analysis:
0.035
0.035
Sulphur (S) (Max)%
Heat Analysis:
Product Analysis:
0.030
0.030
Silicon (Si)%
Heat Analysis:
Product Analysis:
0.50 max
0.55 max
Chromium (Cr)%
Heat Analysis:
Product Analysis:
4.00 - 6.00
3.90 - 6.10
Molybdenum (Mo)%
Heat Analysis:
Product Analysis:
0.45 - 0.65
0.40 - 0.70