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 or directly from the mill. All plates come with mill test certification and individual stampings.
Equivalents:
BS
EN
ASTM/ASME
DIN
...
...
SA387-5-2
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Specifications:
Chromium & Molybdenum content (according to the ASTM specification):
Designation
Nominal Chromium Content (%)
Nominal Molybdenum Content (%)
SA387 Grade 5
5.00%
0.50%
Tensile Requirements for Class 2 Plates:
Designation:
Requirement:
Grade22
SA387 Grade 5
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.
SA 387 Grade 5
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:
0.035
Product Analysis:
0.035
Sulphur (max):
Heat Analysis:
0.030
Product Analysis:
0.030
Silicon:
Heat Analysis:
0.50 max
Product Analysis:
0.55 max
Chromium:
Heat Analysis:
4.00 - 6.00
Product Analysis:
3.90 - 6.10
Molybdenum:
Heat Analysis:
0.45 - 0.65
Product Analysis:
0.40 - 0.70
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 ASME SA387 Grade 5 Class 2 steel plates please contact us.
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