Samuel Steels, based in Abuja, Nigeria, stands out as a reputable manufacturer and supplier of NACE MR 0103/0175 HIC Boiler Sheets and Plates. These products are expertly crafted to perform exceptionally well in corrosive and hydrogen-rich environments. Designed to meet the rigorous standards of NACE MR0103 and MR0175, these plates offer remarkable resistance to hydrogen-induced cracking (HIC) and sulfide stress corrosion. Samuel Steels takes pride in delivering boiler plates that are not only tough and strong but also easy to weld, making them perfect for the oil, gas, petrochemical, and power generation sectors. The company is committed to maintaining consistent quality, durability, and adherence to global industrial standards, ensuring reliable performance even in the harshest conditions.
The NACE MR 0103/0175 HIC Boiler Sheets and Plates are primarily made from carbon, manganese, phosphorus, sulfur, and silicon, with a carefully controlled microstructure that boosts their resistance to hydrogen embrittlement and cracking. They boast a tensile strength ranging from 485 to 620 MPa and a yield strength of about 260 MPa, providing excellent mechanical stability under high pressure and temperature. To enhance toughness and ensure uniform mechanical properties, the plates undergo a normalization process that refines their grain structure. Their outstanding corrosion resistance and high impact strength make them ideal for fabrication and welding in challenging sour service environments.
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 |
| British Standard | European Norm | ASTM/ASME | DIN |
| BS1501-224-490A/B | EN10028 P355GH | A/SA516 – Grade 70 | – |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
These NACE MR 0103/0175 HIC Boiler Sheets and Plates are widely utilized in the construction of boilers, pressure vessels, heat exchangers, and storage tanks that operate in sour gas and hydrogen sulfide conditions. They are particularly well-suited for refineries, offshore platforms, gas processing units, and chemical industries where corrosion resistance and safety are paramount. With these plates, you can count on operational reliability, reduced maintenance needs, and a long service life, even under demanding conditions. Their strength, ease of welding, and compliance with NACE standards make them a trusted choice for industries that require top-notch materials.
Samuel 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 Abuja, Nigeria.
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