Rina class Grade E/D/B/A naval plate materials
Steel Grade:RINA Grade A,RINA Grade B,RINA Grade D,RINA Grade E
Ship Building Plate Main application:Used primarily in structural applications in marine and shipping industry for barges,ships,small vessels,support structures,and various types of equipment with RINA (Registro Italiano Navale) certificate.
Rolling range: Thickness*Width*Length 3-450mm*1500-4200mm*5000-18000mm
Surface Treatment: Coated,Shop primer painting
Test: Low temperature impacting test,Ultrasonic examination,Normalized,Z-TEST,Z15,Z25,Z35.

RINA Grade A Shipbuilding Steel Plate Chemical Composition and Mechanical Property
| C max | Si max. | Mn min. | P max | S max | Cu max | Cr max | Ni max |
|
0.21 |
0.50 |
0.50 |
0.035 |
0.035 |
0.35 | 0.30 |
0.30 |
| Yield Strength (MPa) min. | Tensile Strength (MPa) | Elongation min. % |
| 235 | 400-520 | 22 |
RINA Grade B Shipbuilding Steel Plate Chemical Composition and Mechanical Property
| C max | Si max. | Mn min. | P max | S max | Cu max | Cr max | Ni max |
|
0.21 |
0.35 |
0.80 |
0.035 |
0.035 |
0.35 | 0.30 |
0.30 |
| Yield Strength (MPa) min. | Tensile Strength (MPa) | Elongation min. % |
| 235 | 400-520 | 22 |
RINA Grade D Shipbuilding Steel Plate Chemical Composition and Mechanical Property
| C max | Si max. | Mn min. | P max | S max | Cu max | Cr max | Ni max | Als min |
|
0.21 |
0.35 |
0.60 |
0.030 |
0.030 |
0.35 | 0.30 |
0.30 |
0.015 |
| Yield Strength (MPa) min. | Tensile Strength (MPa) | Elongation min. % |
| 235 | 400-520 | 22 |
RINA Grade E Shipbuilding Steel Plate Chemical Composition and Mechanical Property
| C max | Si max. | Mn min. | P max | S max | Cu max | Cr max | Ni max | Als min |
|
0.18 |
0.35 |
0.70 |
0.025 |
0.025 |
0.35 | 0.30 |
0.30 |
0.015 |
| Yield Strength (MPa) min. | Tensile Strength (MPa) | Elongation min. % |
| 235 | 400-520 | 22 |
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