NACE HIC Boiler Plates are specially crafted carbon-steel (or low-alloy) sheets and plates that are designed to withstand hydrogen-induced cracking (HIC) as defined by NACE International. This type of failure is often seen in “sour” environments that contain hydrogen sulfide (H₂S). These plates go through rigorous chemical control, focusing on low levels of sulfur and phosphorus, along with controlled amounts of carbon and manganese. They also undergo qualification testing, such as HIC tests according to NACE TM0284 / TM0177, to ensure they can resist internal hydrogen-related cracking.
Typically, HIC-resistant boiler plates, like those under base grades such as SA 516 GR.60/70N or GR.65N, have chemical compositions and mechanical properties that are optimized for sour-service and pressure-vessel applications. The tensile strength usually falls between 485 to 620 MPa, with yield strength around 260–300 MPa. They maintain good elongation and toughness, even in sour-service conditions. Manufacturing and supply conditions often include normalized rolling or normalized + tempered or hot-rolled + normalization (Q+T), depending on the specifications, along with impact-tested plates for low temperature or sour service.
| Grade | ASME SA 516 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) |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Faisal Steel is a trusted manufacturer and supplier of high-quality NACE HIC Boiler Plates in Muscat, OMAN. We specialize in premium steel products, including Alloy Steel, Carbon Steel, Mild Steel and Galvanized Steel, with a strong focus on Carbon Steel Sheet and Plates. Our extensive inventory also includes Pipes, Tubes, Flanges, Forged Fittings and Bars. Committed to fast delivery and exceptional customer service, we use only the finest raw materials to ensure superior strength, durability and performance for critical industrial applications. Contact us today for all your NACE & HIC Boiler Plates needs!
NACE HIC Boiler Plates are commonly used in industries and applications where it’s crucial to resist hydrogen-induced cracking and sulfide stress cracking (SSC). This includes sectors like oil and gas, petrochemical, refinery, chemical, and sour-service pressure vessels. They are particularly well-suited for the fabrication of boilers, pressure vessels, storage tanks, heat exchangers, and pipelines that handle sour gas or fluids containing H₂S.
FAISAL 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 Muscat, OMAN.
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