SA387 Grade 9 Class 2

SA387 Grade 9 Class 2 – weldable carbon steel plates for pressure vessels and boilers used in elevated temperatures. The material benefits from added chromium and molybdenum which gives the steel greater corrosion resistance and resistance to heat. SA387 Grade 9 is used by fabricators who serve the oil, gas and petrochemical industry.
ASME SA387 Grade 9 is available ex stock form our UK warehouse and we can dispatch to clients on a global basis. As with all our carbon steel plates, the material comes with mill certification and stampings.

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

DescriptionGrade 60
Tensile strength (ksi)60-80
Tensile strength (MPa)415-550
Yield strength (ksi)32
Yield strength (MPa)220
Elongation in 200mm (min)(%)21
Elongation in 50mm (min) (%)25
Thickness (max)(mm)205

(Minimum values unless stated otherwise)
(Please note: the technical information above is for guidance only – for exact specifications please check with our Sales Team)

Mechanical Properties of SA387 Grade 9 Class 2

DesignationRequirementGrade 9
A387 Grade 9Tensile 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 SA387 Grade 9 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:
0.030
0.030
Sulphur (S) (Max)%
Heat Analysis:
Product Analysis:
0.030
0.030
Silicon (Si)%
Heat Analysis:
Product Analysis:
1.00 max
1.05 max
Chromium (Cr)%
Heat Analysis:
Product Analysis:
8.00 - 10.00
7.90 - 10.10
Molybdenum (Mo)%
Heat Analysis:
Product Analysis:
0.90 - 1.10
0.85 - 1.15
Vanadium (Vn)%
Heat Analysis:
Product Analysis:
0.04 max
0.05 max