A387 Grade 9 Class 2 – chrome–molybdenum plate is an ideal material for welded pressure vessels and boilers used in elevated temperature service. With excellent resistance to high temperature and corrosion, this type of steel is commonly used in the petrochemical, oil, gas and power generation industry.
All plates come with mill test certification and individual stampings. Third party testing can be arranged at the customers request.
Equivalents:
BS
EN
ASTM/ASME
DIN
...
...
A387-9-2
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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:
Grade 9
A387 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 specimen) 40 (measured on flat specimen)
Chemical Requirements:
Element
Chemical Composition (%) inc. Grade & UNS No.
Grade 9 (UNS: K90941)
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 services and ASTM A387 Grade 12 Class 2 steel plates which we can supply directly to you from stock or from the mill, please contact us.
Click on one of the links above to view technical information on particular grades.
For more information about ASTM A387 chrome moly plates or to receive a detailed and competitive quotation, please contact us.
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