Product Description
EQUIVALENT GRADE OF A516 GR.70N NACE BOILER PLATES
| British Standard |
European Norm |
ASTM/ASME |
DIN |
| BS1501-224-490A/B |
EN10028 P355GH |
A/SA516 - Grade 70 |
- |
SPECIFICATION
| 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 deg 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) |
CHEMICAL COMPOSITION OF A516 BQ GR.70N NACE AND HIC STEEL PLATES
| 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 |
MECHANICAL PROPERTIES OF NACE RESISTANT STEEL PLATES
| 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 |
Engineered for Extreme ConditionsThese plates are normalized to achieve exceptional toughness and strength, particularly at low temperatures, making them suitable for applications in demanding industries. Their precise composition and manufacturing ensure reliable performance under high-pressure and corrosive environments, such as refineries and chemical plants.
Comprehensive Quality and Safety StandardsSA 516 GR 70N NACE Plus HIC Plates undergo rigorous testing, including Charpy V-Notch impact tests at -20C and HIC tests, to guarantee safety and resilience. Compliance with NACE MR0175/ISO 15156 and ASTM A20 flatness tolerances ensures these plates meet international standards for use in pressure vessels and sour service conditions.
Customizable Solutions for Diverse ApplicationsThese plates are available in a range of thicknesses, lengths, and widths to suit specific project needs. Options include mill or cut edges, cut-to-length, profiled plates, and custom machining, providing flexibility for applications in boiler fabrication, storage tanks, and complex installations in the energy sector.
FAQ's of SA 516 GR 70N NACE Plus HIC Plates:
Q: How does the SA 516 GR 70N NACE Plus HIC Plate ensure resistance to hydrogen-induced cracking?
A: The plate is specially tested for Hydrogen Induced Cracking (HIC), following stringent procedures to verify its resilience in environments containing hydrogen sulfide (H2S). Its low sulphur and phosphorus content also enhances its sour service performance by reducing susceptibility to HIC.
Q: What are the typical applications of SA 516 GR 70N NACE Plus HIC Plates?
A: These plates are primarily used in pressure vessels, boilers, storage tanks, and structures in oil and gas, petrochemical, and energy industries due to their superior strength, toughness, and resistance to corrosive and sour environments.
Q: When is it necessary to use testing at -20C for these steel plates?
A: Testing at -20C, such as the Charpy V-Notch test, is essential for applications where the plate may experience low temperatures, ensuring the material retains its toughness and structural integrity in cold conditions.
Q: Where can SA 516 GR 70N NACE Plus HIC Plates be custom fabricated and supplied?
A: These plates can be supplied directly from manufacturers, distributors, and wholesalers across India, with custom dimensions, edges, and machining as required for specific engineering projects.
Q: What is the process for ensuring flatness and surface finish in these plates?
A: Flatness is maintained according to ASTM A20 standards, while the plates are hot rolled and given a mill finish. Additional cutting, profiling, and surface customization can be provided as specified by the customer.
Q: How do these plates benefit projects involving corrosive or sour environments?
A: Their compliance with NACE MR0175/ISO 15156 and rigorous HIC testing guarantees reliable performance and long-term durability in environments containing hydrogen sulfide, reducing maintenance risks and extending service life.