SA387 Gr.22 Cl.1 High-Temperature Pressure Vessel Steel Plate
SA387 Gr22 CL1 is a high-performance alloy steel plate that belongs to the ASME SA387/SA387M standard system. It is mainly used in the manufacture of high-temperature and high-pressure equipment in fields such as petrochemicals, nuclear power, and thermal power, and is particularly suitable for environments in contact with hydrogen media.
Chemical Requirements
|
A387 Gr22CL.1Chemical Composition |
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| Grade |
The Element Max(%) |
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|
C |
Si | Mn | P | S | Cr | Mo | |
|
A387 Gr.22 Cl.1 |
0.04-0.15 | 0.50 | 0.30-0.60 | 0.035 | 0.035 | 1.88-2.62 | 0.85-1.15 |
Core Performance Characteristics
High-temperature corrosion resistance
The synergistic effect of chromium and molybdenum enables the steel plate to perform excellently in corrosive media containing hydrogen sulfide (H₂S), making it suitable for high-temperature reactors in refineries and chemical plants.
Oxidation resistance: In high-temperature environments below 800℃, a stable oxide film forms on the surface, preventing oxidative failure of the material.
Resistance to temper embrittlement
Strict control over the content of harmful elements such as tin (Sn) and antimony (Sb) reduces the tendency of temper embrittlement, ensuring stable long-term operation at high temperatures.
What is the difference between SA 387 GR 11 cl1 and cl2?
The difference between SA 387 Grade 11 Class 1 and Class 2 Plate lies in their mechanical properties. However, they both have the same chemical composition. The tensile strength and yield strength of class 2 material is higher than that of class 1, whereas the elongation for class 1 is higher compared to class 2.
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