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 from our 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.
Equivalents:
BS
EN
ASTM/ASME
DIN
...
...
SA387-5-2
...
Specifications:
Chromium & Molybdenum content (according to the ASTM specification):
Designation
Nominal Chromium Content (%)
Nominal Molybdenum Content (%)
A387 Grade 9
9.00%
1.00%
Tensile Requirements for Class 2 Plates:
Designation:
Requirement:
Grade22
SA387 Grade 9
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 test specimens) 40 (measured on flat test specimen)
Chemical Requirements:
Element
Chemical Composition (%) inc. Grade & UNS No.
SA 387 Grade 9
Carbon:
Heat Analysis:
0.15 max
Product Analysis:
0.15 max
Manganese:
Heat Analysis:
0.30 - 0.60
Product Analysis:
0.25 - 0.66
Phosphorus:
Heat Analysis:
0.030
Product Analysis:
0.030
Sulphur (max):
Heat Analysis:
0.030
Product Analysis:
0.030
Silicon:
Heat Analysis:
1.00 max
Product Analysis:
1.05 max
Chromium:
Heat Analysis:
8.00 - 10.00
Product Analysis:
7.90 - 10.10
Molybdenum:
Heat Analysis:
0.90 - 1.10
Product Analysis:
0.85 - 1.15
Vanadium:
Heat Analysis:
0.04 max
Product Analysis:
0.05 max
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 Asteiron's chrome moly plate and particularly ASME SA387 Grade 9 Class 2 steel plates, contact us.
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