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Nial Sheets and Plates is a top-notch manufacturer and supplier located in Houston, USA, specializing in high-quality NACE MR0103/0175 HIC Boiler Sheets and Plates. These products are expertly crafted to endure the tough conditions of sour service environments. Designed specifically to combat hydrogen-induced cracking (HIC) and sulfide stress corrosion cracking (SSCC), they’re perfect for use in the oil, gas, petrochemical, and refinery sectors. Nial takes pride in ensuring that every product adheres to strict international standards, including NACE MR0175 and MR0103, complete with full traceability and thorough quality checks. With a strong focus on material sourcing and timely delivery, Nial plays a crucial role in supporting operations where safety and reliability are essential.
The NACE MR0103/0175 HIC Boiler Sheets and Plates are made from specially treated low alloy or carbon steel, with carefully controlled levels of sulfur, phosphorus, and carbon to reduce the risk of cracking. Their typical composition includes carbon (≤0.20%), manganese (0.90–1.60%), sulfur (≤0.002%), phosphorus (≤0.015%), along with other micro-alloying elements. These plates boast impressive mechanical properties, featuring a tensile strength of 485–620 MPa, a yield strength of ≥250 MPa, and an elongation of ≥22%, depending on their thickness. They undergo HIC testing according to NACE standards to guarantee their resistance to hydrogen blistering and cracking in sour gas 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.
NACE MR 0103/0175 HIC Boiler Sheets and Plates offer exceptional resistance to hydrogen-induced cracking (HIC), making them ideal for high-sulfur environments. They provide superior corrosion resistance, especially in acidic and sulfide-rich conditions, ensuring long-term durability and reliability. These materials also exhibit excellent mechanical properties, such as high tensile strength and toughness, making them suitable for demanding applications in oil and gas, chemical processing, and power generation industries. Their resistance to stress corrosion cracking ensures enhanced performance and longevity in harsh environments.
These boiler sheets and plates find extensive use in pressure vessels, heat exchangers, boilers, and separators that operate under sour service conditions. Their ability to resist HIC and sulfide stress corrosion makes them indispensable in both upstream and downstream oil and gas operations, including offshore platforms, refineries, and chemical processing plants. They’re also well-suited for piping systems, storage tanks, and reactors that are exposed to hydrogen sulfide (H₂S) environments. By using NACE MR0103/0175 compliant plates, companies can ensure long-term equipment integrity, reduce the risk of failures, and comply with safety regulations for corrosive applications.
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Houston, TX 77041
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