Metal Tubular Products SA387 Grade 5 Class 1 alloy steel plate is a low alloy steel designed for elevated temperature service in pressure vessels and boilers. It is characterized by its excellent corrosion and heat resistance properties, making it ideal for applications where high-temperature strength and resistance to oxidation are crucial. The chemical composition of SA387 Grade 5 Class 1
typically includes a maximum carbon content of 0.15%, manganese in the range of 0.30% to 0.60%, phosphorus and sulfur content capped at 0.035%, silicon up to 0.50%, and a significant amount of chromium (4.00% to 6.00%) and molybdenum (0.45% to 0.65%). This combination of elements provides the alloy with its superior high-temperature properties, including enhanced tensile strength in the range of 415 - 585 MPa (60,000 - 85,000 psi), a minimum yield strength of 205 MPa (30,000 psi), an elongation of at least 18%, and a reduction of area of at least 45%. The alloy's hardness typically falls in the range of 187 to 250 HB (Brinell).
SA387 Grade 5 Class 1 alloy steel plates are widely used in various industries, including petrochemical, chemical, power generation, and more, where they are employed in the construction of pressure vessels, boilers, and heat exchangers operating at elevated temperatures. These plates meet ASME SA387 standards and are known for their excellent performance under demanding conditions. Always consult the manufacturer's specifications and data sheets for precise information when considering SA387 Grade 5 Class 1 alloy steel plates for your specific applications.
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Specification:
| Property | SA387 Grade 5 Class 1 Alloy Steel Plate |
| Material | Alloy Steel (ASME SA387 Grade 5 Class 1) |
| Type | Low Alloy Steel |
| Thickness Range | 6mm - 100mm (1/4" - 4") |
| Width Range | 1500mm - 2500mm (59" - 98") |
| Length Range | 3000mm - 12500mm (118" - 492") |
| Tensile Strength | 415 - 585 MPa (60,000 - 85,000 psi) |
| Yield Strength (min) | 205 MPa (30,000 psi) |
| Elongation (min) | 18% |
| Reduction of Area (min) | 45% |
| Hardness (Brinell) (max) | 187 - 250 HB |
| Standard | ASME SA387 |
| Grade | Grade 5 Class 1 |
Chemical composition of SA387 Grade 5 Class 1 Alloy steel plate
| Element | Composition Range (%) |
| Carbon (C) | 0.15% max |
| Manganese (Mn) | 0.30 - 0.60 |
| Phosphorus (P) | 0.035% max |
| Sulfur (S) | 0.035% max |
| Silicon (Si) | 0.50% max |
| Chromium (Cr) | 4.00 - 6.00 |
| Molybdenum (Mo) | 0.45 - 0.65 |
Mechanical Properties of SA387 Grade 5 Class 1 Alloy steel plate
| Property | Value |
| Tensile Strength | 415 - 585 MPa (60,000 - 85,000 psi) |
| Yield Strength | 205 MPa (30,000 psi) (min) |
| Elongation | 18% (min) |
| Reduction of Area | 45% (min) |
| Hardness (Brinell) | 187 - 250 HB |
Advantages of SA387 Grade 5 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 |
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