40mm Thick ASTM A203 Grade D Steel Plate with Excellent Weldability
ASME SA203 Steel Plates are manufactured with low-alloy steel and used in pressure vessels. Haneesy supplies premium quality.
- High Strength and Toughness – Meets stringent mechanical requirements for pressure vessel applications.
- Excellent Weldability – Suitable for various welding processes without compromising material integrity.
- Heat-Treated Grades Available – Enhanced structural performance for demanding fabrication needs
- Wide Thickness Range – From thin sheets to thick plates, accommodating diverse project specifications.
- Industry Standard Compliance – Fully conforms to ASME SA203 and ASTM A203 requirements for safety and reliability.
ASME SA203/ASTM A203 Steel Plate Description
ASME SA203 Steel Plates, supplied by Haneesy, are manufactured from high-strength low-alloy steel, designed for pressure vessels and boiler applications. As a reliable manufacturer and exporter, we offer plates ranging from 6mm to 150mm thickness, meeting strict mechanical and weldability standards. These plates provide excellent toughness and durability, addressing industrial needs in petrochemical, power generation, and heavy equipment sectors. Our bulk supply ensures competitive pricing and consistent quality for distributors, fabricators, and dealers worldwide.
| sa203 Steel Plate Chemical Composition | |||||||||||
| Grade | C (%) | Mn (%) | P (%) | S (%) | Si (%) | Ni (%) | Cr (%) | Mo (%) | Cu (%) | V (%) | Others |
| Grade A | 0.18 max | 0.70–1.20 | 0.035 max | 0.035 max | 0.15 max | 0.60 max | 0.50 max | 0.10 max | 0.25 max | — | — |
| Grade B | 0.18 max | 0.70–1.20 | 0.035 max | 0.035 max | 0.15 max | 0.60 max | 0.50 max | 0.10 max | 0.25 max | — | — |
| Grade C | 0.18 max | 0.70–1.20 | 0.035 max | 0.035 max | 0.15 max | 0.60 max | 0.50 max | 0.10 max | 0.25 max | 0.10 max | — |
| Grade D | 0.18 max | 0.70–1.20 | 0.035 max | 0.035 max | 0.15 max | 0.60 max | 0.50 max | 0.10 max | 0.25 max | 0.10 max | — |
| Grade E | 0.18 max | 0.70–1.20 | 0.035 max | 0.035 max | 0.15 max | 0.60 max | 0.50 max | 0.10 max | 0.25 max | 0.10 max | Ti, Nb, V (microalloying) |
| sa203 Steel Plate MECHANICAL PROPERTIES | |||||
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Impact Test (J) | Test Temperature (°C) |
| Grade A | 450–620 | 205 (min) | 22 (min) | 27 (min) | 20 |
| Grade B | 450–620 | 205 (min) | 22 (min) | 27 (min) | 20 |
| Grade C | 450–620 | 205 (min) | 22 (min) | 27 (min) | 20 |
| Grade D | 450–620 | 205 (min) | 22 (min) | 27 (min) | 20 |
| Grade E | 450–620 | 205 (min) | 22 (min) | 27 (min) | 20 |
ASME SA203 pressure vessel steel Application
1.Pressure Vessel Fabrication
Widely used in manufacturing high-pressure boilers, reactors, and storage tanks where consistent mechanical strength and weldability are critical.
2.Petrochemical Industry Equipment
Ideal for fabrication of refinery columns, heat exchangers, and chemical processing vessels due to excellent corrosion resistance and toughness.
3.Power Generation Components
Applied in turbine housings and boiler drum shells, providing durability under cyclic thermal and mechanical stresses.
4.Heavy Structural Fabrication
Suitable for large steel structures and heavy machinery frames requiring heat-treated steel with reliable mechanical properties.
5.Marine Engineering
Used in shipbuilding and offshore platforms where resistance to harsh environments and fatigue is necessary.
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