Marzouk Steel, located in Tunis, Tunisia, has built a solid reputation as a reliable manufacturer and supplier of NACE MR 0103/0175 HIC boiler sheets and plates. They cater to the oil, gas, petrochemical, and power generation sectors. With state-of-the-art production facilities and rigorous quality control measures, Marzouk Steel guarantees precise dimensions, an exceptional surface finish, and adherence to international standards. The company offers tailored sheet and plate solutions, prompt delivery, and expert technical support. Their NACE MR 0103/0175 HIC boiler sheets and plates are specifically engineered to withstand hydrogen-induced cracking and corrosion, making them perfect for high-pressure boiler applications and industrial settings that demand long-lasting reliability.
NACE MR 0103/0175 HIC boiler plates and sheets are produced from low-carbon steel with sulfur, phosphorus, and manganese content controlled to improve resistance against hydrogen-induced cracking (HIC). They possess high tensile strength (commonly between 450-650 MPa), good yield strength (≥250 MPa), and superior impact resistance. The merits of these products include improved corrosion resistance in sour environments, weldability, and longer service life in the oil, gas, and petrochemical sectors. Their mechanical properties guarantee toughness in hydrogen sulfide exposed pipelines, heat exchangers, and pressure vessels.
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.
NACE MR 0103/0175 HIC boiler sheets and plates find extensive use in boilers, pressure vessels, heat exchangers, and petrochemical equipment that face exposure to hydrogen sulfide and other corrosive conditions. They are particularly suited for power plants, refineries, chemical processing facilities, and offshore platforms where the risks of hydrogen-induced cracking and sulfide corrosion are significant. With their blend of mechanical strength, corrosion resistance, and toughness, these sheets and plates offer long-lasting durability, safety, and reliable performance in challenging high-pressure and high-temperature industrial environments.
Marzouk 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 Tunis, Tunisia.
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