Metal Tubular Products The chemical composition of this alloy steel plate consists of controlled levels of carbon, manganese, phosphorus, sulfur, silicon, chromium, molybdenum, nickel, and vanadium, carefully balanced to ensure optimum performance in high-temperature and high-pressure environments.
SA387 Grade 22 Class 2 Alloy Steel Plate is a high-quality material designed primarily for use in the construction of pressure vessels and industrial boilers. It excels in applications where extreme temperatures and high-pressure conditions are prevalent, making it a vital choice in industries such as petrochemical, power generation, and chemical processing. This alloy steel plate exhibits impressive mechanical properties, including a tensile strength typically ranging from 75 to 100 ksi (515 to 690 MPa) and a minimum yield strength of 45 ksi (310 MPa). Additionally, it showcases an elongation of 18% or more in a 2-inch (50mm) gauge length and a reduction of area of 22% or more in a 50mm specimen. The hardness of SA387 Grade 22 Class 2 can vary between 248 and 321 HB (Brinell hardness).
SA387 Grade 22 Class 2 alloy steel plate conforms to various international standards, including ASTM A387, ASME SA387, EN 10028-2, DIN 17155, JIS G3103, and BS 1501, ensuring its compliance with global manufacturing and quality assurance norms. Its remarkable combination of mechanical strength and corrosion resistance makes it an indispensable material for critical industrial processes, especially those involving elevated temperatures and pressures, where the integrity and safety of pressure vessels are of paramount importance.
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Specification:
| Specification | Description |
| ASTM A387 | Standard Specification for Pressure Vessel Plates, Alloy Steel, Chromium-Molybdenum |
| ASME SA387 | Boiler and Pressure Vessel Code, Section II, Part A, Specification for Pressure Vessel Plates, Alloy Steel, Chromium-Molybdenum |
| EN 10028-2 | European standard for flat products made of steels for pressure purposes - Part 2: Non-alloy and alloy steels with specified elevated temperature properties |
| DIN 17155 | German standard for pressure vessel steels |
| JIS G3103 | Japanese Industrial Standards for pressure vessels |
| BS 1501 | British Standards for steels for pressure purposes |
Chemical composition of SA387 Grade 22 Class 2 Alloy Steel Plate
| Element | Composition Range (% by weight) |
| Carbon (C) | 0.04 - 0.15 |
| Manganese (Mn) | 0.30 - 0.60 |
| Phosphorus (P) | 0.035 (max) |
| Sulfur (S) | 0.035 (max) |
| Silicon (Si) | 0.15 - 0.50 |
| Chromium (Cr) | 2.00 - 2.50 |
| Molybdenum (Mo) | 0.90 - 1.10 |
| Nickel (Ni) | 0.40 (max) |
| Vanadium (V) | 0.02 - 0.09 |
Mechanical Properties of SA387 Grade 22 Class 2 Alloy Steel Plate
| Property | Value |
| Tensile Strength, ksi (MPa) | 75-100 (515-690) |
| Yield Strength, ksi (MPa) | 45 (310) min |
| Elongation in 2 inches (%) | 18% min in 2" (50mm) |
| Reduction of Area (%) | 22% min (50mm) |
| Hardness, HB | 248-321 |
Advantages of SA387 Grade 22 Class 2 Alloy Steel Plate
- Good general corrosion resistance and high strength
- Good sulfide stress corrosion resistance
- Resistance to chloride pitting and crevice corrosion
- Higher resistance to chloride stress corrosion cracking
- Easy to weld and conform
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Applications Industry
| Pharmaceutical Equipment | Chemical Equipment |
| Sea Water Equipment | Heat Exchangers |
| Heat Exchangers | Gas Processing |
| Condensers | Specialty Chemicals |
| Pulp and Paper Industry | Pharmaceuticals |
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