Here in the heart of Addis Ababa, Desta Steel proudly stands as a trusted manufacturer and supplier, dedicated to supporting Ethiopia’s growing industrial landscape. We understand the critical demands of modern engineering, which is why we specialize in providing NACE MR 01030175 HIC-certified boiler sheets and plates. This isn’t just standard steel; it’s a high-integrity material engineered for environments where reliability is non-negotiable, ensuring the safety and longevity of your most demanding projects.
The composition of these specialized plates is carefully controlled to resist Hydrogen Induced Cracking (HIC). They meet the stringent requirements of the NACE MR 0103 standard, which guarantees excellent performance in sour service conditions containing hydrogen sulfide. This results in impressive mechanical properties, including high strength and superior toughness. Essentially, the material is built to withstand corrosive elements that would cause standard steel to fail, providing a crucial layer of protection for your equipment.
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.
You will typically find these robust plates at work in the most challenging sectors. They are essential for fabricating pressure vessels, heat exchangers, and critical components within oil and gas refineries and petrochemical plants. Any application where equipment is exposed to wet H2S gas demands this level of material integrity. By choosing these sheets, you are directly investing in the safety, durability, and operational efficiency of your infrastructure, preventing costly downtime and ensuring long-term performance.
Desta 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 Addis Ababa, Ethiopia.
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