SA 387 Gr.22 Cl.2 steel is characterised by good weldability. These types of steel are used above all for manufacturing boilers, pressure vessels and pipes for the transportation of hot liquids. They also offer good properties at high and low temperatures. The product is always supplied in the normalised and tempered condition.
Equivalents for ASME SA387 Grade 22 Class 2 Alloy Steel Plates
| BS | EN | ASTM/ASME | DIN |
| 622-515B | 10 CRMO910 | SA387-22-2 | 10 CRMO910 |
Specifications for ASME SA387 Grade 22 Class 2 Alloy Steel Plates
Chromium & Molybdenum content (according to the ASME specification)
| Designation | Nominal Chromium Content (%) |
Nominal Molybdenum Content (%) |
| SA387 Grade 22 | 2.25% | 1.00% |
Tensile Requirements for ASME SA387 Grade 22 Alloy Steel Plates Class 2 Plates
| Designation: | Requirement: | Grade 22 |
| SA387 Grade 22 | 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 for ASME SA387 Grade 22 Class 2 Alloy Steel Plates
| Element | Chemical Composition (%) | |
| SA387 Grade 22 | ||
| Carbon: | Heat Analysis: | 0.05 - 0.15 |
| Product Analysis: | 0.04 - 0.15 | |
| 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: | 0.035 |
| Product Analysis: | 0.035 | |
| Silicon: | Heat Analysis: | 0.50 max |
| Product Analysis: | 0.50 max | |
| Chromium: | Heat Analysis: | 2.00 - 2.50 |
| Product Analysis: | 1.88 - 2.62 | |
| Molybdenum: | Heat Analysis: | 0.90 - 1.10 |
| Product Analysis: | 0.85 - 1.15 |
Applications
Weldable Pressure Vessels and Industrial Boilers
It is a cost-effective and reliable material for fabricating welded pressure vessels and industrial boilers that operate under high-temperature and medium-pressure conditions. Its excellent weldability allows for the formation of high-quality weld joints, while its inherent structural stability ensures long-term safe operation in thermal processing systems.
Sour Service Environments
The alloy formulation endows the steel plate with good resistance to sulfide stress cracking, making it suitable for equipment deployed in sour service environments containing hydrogen sulfide. It can effectively withstand the combined corrosion of acidic media and high temperature, reducing the risk of equipment failure in harsh oil and gas extraction and processing scenarios.
Numerous Industrial Applications
Beyond pressure-bearing equipment, it has a wide range of applications across petrochemical, chemical processing, and thermal power industries. It is used to manufacture heat exchanger shells, reactor accessories, and high-temperature pipeline components, adapting to diverse working conditions that demand balanced strength and corrosion resistance.
Gas Applications
It is extensively applied in gas processing and transmission systems, including the fabrication of gas storage tanks, pressure regulating device components, and pipeline sections for transporting high-temperature fuel gas. It maintains stable performance under the cyclic changes of gas pressure and temperature, ensuring the efficiency and safety of gas handling processes.
If you want to learn more about (SA 387 Gr.22 Cl.2)GNEE's products, you can send an email to beam@gneesteelgroup.com. We are more than happy to assist you.
1.What is SA 387 Grade 22 Class 2 equivalent to?
SA 387 Grade 22 Class 2 is a chromium-molybdenum alloy steel for high-temperature pressure vessels, with key international equivalents being EN/DIN 10CrMo9-10, BS 622-515B, and JIS SCMV4, all offering similar strength and corrosion resistance for demanding oil, gas, and chemical applications.
2.What is the composition of SA 387 GR.22 CL.2 steel?
SA 387 Gr.22 Cl.2 is a chromium-molybdenum alloy steel for high-temperature pressure vessels, primarily composed of 2.00-2.50% Chromium (Cr) and 0.90-1.10% Molybdenum (Mo), with controlled amounts of Carbon (C), Manganese (Mn), Silicon (Si), Phosphorus (P), and Sulfur (S), offering excellent heat resistance, strength, and oxidation/corrosion resistance for demanding applications in the oil, gas, and petrochemical industries.