As a leading manufacturer and supplier based in Naypyidaw, Naing Steel takes pride in supporting Myanmar’s industrial growth with specialized materials. We understand the critical demands of modern boiler fabrication, which is why we offer our NACE MR 01030175 HIC Boiler Sheet and Plates. This product is specifically engineered to perform reliably in challenging environments, providing our clients with the confidence that comes from using materials built to the highest standards of resilience and safety for essential infrastructure projects.
These plates are crafted with a carefully controlled composition, often low-carbon steel with precise micro-alloying, to deliver excellent mechanical strength and toughness. The key feature is their exceptional resistance to Hydrogen-Induced Cracking (HIC), certified under the stringent NACE MR0103 standard. This means they can withstand exposure to wet hydrogen sulfide environments without succumbing to the internal damage that can compromise lesser materials, ensuring long-term structural integrity under demanding pressure and corrosive conditions.
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.
The primary use for these specialized plates is in the construction of pressure vessels and boilers for the oil, gas, and petrochemical industries. They are essential for components like separators, scrubbers, and reactors that handle sour gases, where failure is not an option. By choosing these HIC-resistant plates, engineers and fabricators can significantly enhance the safety and operational lifespan of their equipment, mitigating the risks associated with corrosive service environments and protecting both personnel and capital investment.
Naing 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 Naypyidaw, Myanmar.
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