Yoane Steel is a well-known manufacturer and supplier located in Kinshasa, Congo, focusing on top-notch SA 516 GR.70N NACE HIC Plates. These plates are crafted to provide outstanding resistance against hydrogen-induced cracking and corrosion, making them perfect for critical industrial uses. With a strong dedication to quality and precision engineering, Yoane Steel guarantees that each plate adheres to international standards and meets client requirements. The company caters to a variety of industries, including oil and gas, petrochemical, and power generation, offering dependable materials that ensure long-lasting performance, durability, and safety even in extreme environmental and operational conditions.
SA 516 GR.70N NACE HIC Plates are pressure vessel steel plates for sour service applications, specifically hydrogen-induced cracking (HIC) resistant. They meet NACE MR0175/ISO 15156 standards, making them durable even in harsh conditions. The average chemical composition consists of Carbon (≤0.28%), Manganese (0.85-1.20%), Phosphorus (≤0.010%), Sulfur (≤0.002%), Silicon (0.13-0.45%), and trace amounts of Nickel, Chromium, and Molybdenum. These plates have very good weldability, toughness, and corrosion resistance, hence suitable for oil, gas, and petrochemical industries.
| Grade | ASME SA 516 GR.70N 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 weld fabrication of pressure vessels that require improved notch toughness for lower than ambient temperature service. |
| Process of Manufacturing | Hot-Rolled (HR) |
| C | Si | Mn | P | S | Al | Cr | Cu | Ni | Mo | Nb | Ti | V |
| 0.18 | 0.4 | 0.95/1.50 | 0.015 | 0.008 | 0.02 (Min) | 0.3 | 0.3 | 0.3 | 0.08 | 0.01 | 0.03 | 0.02 |
| Tensile strength (ksi) | Yield strength (ksi) | Elongation min, % 200 mm (8 in) | Elongation min, % 50 mm (2 in) |
| 485-620 (70-90) | 260 (38) | 17 | 21 |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
| British Standard | European Norm | ASTM/ASME | DIN |
| BS1501-224-490A/B | EN10028 P355GH | A/SA516 – Grade 70 | – |
SA 516 GR.70N NACE HIC Plates are primarily made up of carbon, manganese, phosphorus, sulfur, and silicon, along with trace elements that boost their mechanical strength. These plates deliver impressive tensile strength, toughness, and notch sensitivity, with enhanced weldability thanks to normalized heat treatment. Their yield strength typically hovers around 260 MPa, while tensile strength falls between 485–620 MPa. Built to comply with NACE MR0175 and HIC testing standards, they show remarkable resistance to hydrogen-induced cracking, corrosion, and pressure, ensuring peak performance in challenging and corrosive settings.
SA 516 GR.70N NACE HIC Plates find extensive use in pressure vessels, heat exchangers, and boilers that operate in hydrogen sulfide-rich and corrosive environments. They are particularly suited for oil refineries, gas processing plants, and petrochemical industries where resistance to hydrogen damage and stress corrosion cracking is essential. Additionally, these plates are utilized in offshore drilling platforms, chemical processing units, and power plants for creating safe and durable storage tanks and equipment. Their blend of strength, corrosion resistance, and reliability makes them a top choice for high-temperature and high-pressure applications.
Yoane Steel is a leading manufacturer, supplier and exporter of high-quality Carbon Steel, Alloy Steel, Mild Steel and Galvanized Steel products. Our extensive product range includes Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets and Plates, catering to various industries in Kinshasa, Congo.
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