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Based in the industrial heart of Hamilton, New Zealand, Will Sheetsandplates has built a reputation as a trusted local source for high-grade steel. We understand the critical demands of heavy fabrication, which is why we specialise in supplying SA537 Class 1 Boiler Sheet and Plate. This isn’t just another material in our inventory; it’s a product we stand behind for projects where safety and integrity are non-negotiable, providing our clients with the confidence that comes from using a premium, purpose-built steel.
The strength of SA537 Class 1 lies in its carefully balanced composition and mechanical properties. As a carbon-manganese-silicon steel, it is heat treated to offer an excellent combination of high tensile strength and reliable notch toughness, even in lower temperature environments. This specific treatment ensures it meets the rigorous requirements for pressure vessel applications, providing a robust and durable material that fabricators can depend on for long-term performance and structural safety under demanding conditions.
Grade : ASME SA 537 CL.1 Boiler and Pressure Vessel Steel Plates
Width : 1000mm-4500mm
Thickness : 5mm-150mm
Length : 3000mm-18000mm
Supply Condition : As Rolled, Normalized Rolling, Furnace Normalizing, Vacuum Degassing, Simulated Post-Weld Heat Treatment or as per customer requirement.
Impact tested : -52° C
Tempering : Notch toughness can be improved by quenched cooling from hot rolling or normalizing by the supplier. If such a faster cooling rate is agreed upon between purchaser and supplier then the steel is also to be tempered at 1200 F.
Applications : Used for Boilers and Pressure Vessels Application.
Process of Manufacturing : Hot-Rolled (HR)
| C | Mn | P | S | Si | Cr | Cu | Ni | Mo | |
| ≤ 40 mm | > 40 mm | ||||||||
| 0.24 max | 0.70/1.35 | 1.00/1.60 | 0.035 | 0.035 | 0.15/0.50 | 0.025 | 0.35 | 0.25 | 0.080 |
| Grade | Heat Treatment | Yield (MPa) | Tensile (MPa) | Elongation | Thickness | |
| A50mm | A200mm | |||||
| SA537 Class 1 | Normalized | 345 | 485/620 | 22% | 18% | ≤ 65 |
| 310 | 450/585 | 22% | 18% | > 65 ≤ 100 | ||
| Steel Grade | JIS | Germany |
| ASTM/ASME | G3115 | DIN17155 |
| A537 / SA537 | SPV36 | 19Mn5 |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
SA537 Class 1 Boiler Sheet and Plate offer excellent strength, toughness, and resistance to pressure, making them ideal for use in high-temperature and high-pressure applications like boilers and pressure vessels. Their superior weldability allows for easy fabrication, while their resistance to cracking and corrosion enhances reliability in demanding environments. This steel is heat-treated to ensure improved mechanical properties, long-term durability, and performance. With excellent formability and impact resistance, SA537 Class 1 is a trusted choice for power generation, petrochemicals, and manufacturing industries.
You’ll typically find SA537 Class 1 plate at the core of critical infrastructure, forming the key components of boilers and pressure vessels across power generation and industrial plants. Its robust nature also makes it an ideal choice for large-scale storage tanks and similar constructions that must safely contain gases or liquids under high pressure. Essentially, this material is selected for applications where failure is not an option, ensuring the safety and reliability of essential equipment in some of our most important industries.
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