Metal Tubular Products SA387 Grade 22 Class 1 Alloy Steel Plate is a high-quality material primarily used in the construction of pressure vessels and industrial boilers. It is specially engineered to withstand elevated temperatures and high-pressure conditions, making it a crucial choice for applications in industries such as petrochemical, power generation, and chemical processing.
The chemical composition typically includes controlled levels of carbon, manganese, phosphorus, sulfur, silicon, chromium, molybdenum, nickel, and vanadium. These elements combine to provide outstanding mechanical properties, including a tensile strength ranging from 75 to 100 ksi (515 to 690 MPa), a minimum yield strength of 45 ksi (310 MPa), and notable elongation and reduction of area characteristics.
SA387 Grade 22 Class 1 alloy steel plate complies with various international standards, including ASTM A387, ASME SA387, EN 10028-2, DIN 17155, JIS G3103, and BS 1501, ensuring its compatibility with global manufacturing and quality assurance standards. This alloy steel plate plays a vital role in maintaining safety and efficiency in environments characterized by high temperatures and pressures, making it an essential component in various critical industrial processes. Its exceptional combination of mechanical strength and corrosion resistance makes it a reliable choice for demanding applications where the integrity of pressure vessels is paramount
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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 1 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 - 0.40 |
| 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 1 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 (%) | 45% min (50mm) |
| Hardness, HB | 187-250 |
Advantages of SA387 Grade 22 Class 1 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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