Sayed Steel, located in Safat, Kuwait, is a reputable manufacturer and supplier of high-quality NACE MR 0103/0175 HIC boiler plates and sheets. We have expertise in supplying high-quality corrosion-resistant steel solutions to oil, gas, petrochemical, and power generation industries. Our products are designed to resist hydrogen-induced cracking (HIC) and sulfide stress cracking (SSC) to ensure reliability and safety under severe conditions. With a dedication to excellence, innovation, and high-quality standards, Sayed Steel provides dependable materials for critical industrial use.
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 plates and sheets are utilized in processes with high resistance against hydrogen-induced cracking (HIC) and sulfide stress cracking (SSC). They are required in oil and gas refineries, petrochemical facilities, and offshore platforms to provide safety under sour service conditions. NACE MR 0103/0175 HIC boiler plates are extensively utilized in pressure vessels, heat exchangers, and storage tanks that process hydrogen sulfide-rich fluids. Their higher mechanical strength and corrosion resistance render them suitable for use in severe chemical and marine environments.
Sayed 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 Safat, Kuwait.
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