45MM SA302 Grade A Alloy Pressure Vessel Steel Sheet
ASME SA302 pressure vessel plates are made from alloy steel for boiler and pressure use. Haneesy supplies certified quality for industrial projects.
- High strength alloy steel with excellent toughness and ductility
- Superior weldability suitable for boiler and pressure vessel fabrication
- Good resistance to high temperature and pressure environments
- Available in various grades and thicknesses to meet industry standards
- Certified quality ensuring compliance with ASME and ASTM specifications
ASME SA302 / ASTM A302 pressure vessel steel description
Our company is a reliable supplier of ASME SA302 pressure vessel steel, offering high-strength alloy plates designed for boilers and pressure vessels. These steel plates provide excellent weldability, toughness, and resistance to high temperature and pressure, meeting stringent industry standards. Available in various thicknesses and grades, our ASME SA302 steel plates cater to bulk industrial projects, including petrochemical and power generation sectors. As a trusted manufacturer and exporter, we ensure premium quality steel for fabricators, dealers, and distributors worldwide.
ASME SA302 / ASTM A302 pressure vessel steel Data Sheet
| ASME SA302 Chemical Composition | |||
| Element | Grade A (%) | Grade B (%) | Grade C (%) |
| Carbon (C) | 0.22 – 0.28 | 0.28 – 0.35 | 0.35 – 0.42 |
| Manganese (Mn) | 0.60 – 0.90 | 0.60 – 0.90 | 0.60 – 0.90 |
| Phosphorus (P) | ≤ 0.025 | ≤ 0.025 | ≤ 0.025 |
| Sulfur (S) | ≤ 0.025 | ≤ 0.025 | ≤ 0.025 |
| Silicon (Si) | 0.10 – 0.35 | 0.10 – 0.35 | 0.10 – 0.35 |
| Nickel (Ni) | ≤ 0.40 | ≤ 0.40 | ≤ 0.40 |
| Copper (Cu) | ≤ 0.40 | ≤ 0.40 | ≤ 0.40 |
| Chromium (Cr) | ≤ 0.25 | ≤ 0.25 | ≤ 0.25 |
| Molybdenum (Mo) | ≤ 0.08 | ≤ 0.08 | ≤ 0.08 |
| ASME SA302 Mechanical Properties | |||
| Mechanical Property | Grade A | Grade B | Grade C |
| Tensile Strength (MPa) | 415 – 550 | 485 – 620 | 515 – 655 |
| Yield Strength (MPa) | ≥ 275 | ≥ 345 | ≥ 380 |
| Elongation (%) | ≥ 23 | ≥ 20 | ≥ 18 |
| Impact Energy (J) | ≥ 27 (at -29°C) | ≥ 27 (at -29°C) | ≥ 27 (at -29°C) |
| Hardness (HB) | Max 200 | Max 235 | Max 235 |
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ASME SA302/ ASTM A302pressure vessel steel Application
ASME SA302 steel plates are primarily designed for fabricating high-performance boilers and pressure vessels that operate under elevated temperature and moderate pressure conditions. Their superior toughness and weldability make them ideal for use in power generation plants, especially in steam boiler drums and headers where thermal fatigue resistance is critical.
Additionally, SA302 plates find extensive use in the petrochemical and chemical processing industries for pressure vessels handling corrosive gases and liquids. Their excellent strength-to-weight ratio also suits industrial heat exchangers and pressure reactors, ensuring safe and reliable operation.
Compared to other pressure vessel steels, SA302 offers enhanced performance in high-temperature environments, making it a preferred choice for thermal power stations, refineries, and heavy-duty manufacturing plants requiring durable and long-lasting steel components.
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