Equivalent Materials for LR Grade B Shipbuilding Steel Plates
- Jul 14, 2026
Knowledge
Equivalent Materials for LR Grade B Shipbuilding Steel Plates
1. Equivalent Steel Grades of Various Classification Societies
This is the most direct and most commonly used method of equivalence in the industry. As long as the materials have been certified by the corresponding classification society (factory approval and product certificate), the following materials are fully equivalent in terms of specifications:
| Classification Society Name | Abbreviation | Equivalent Steel Grade |
|---|---|---|
| Lloyd's Register | LR | LR Grade B (LR B) |
| China Classification Society | CCS | CCS Grade B (CCS B) |
| American Bureau of Shipping | ABS | ABS Grade B (ABS B) |
| Det Norske Veritas | DNV | DNV Grade B (NV B) |
| Bureau Veritas | BV | BV Grade B (BV B) |
| Nippon Kaiji Kyokai | NK | NK Grade B (NK B) |
| Korea Register of Shipping | KR | KR Grade B (KR B) |
| RINA (Italian Register of Shipping) | RINA | RINA Grade B (RINA B) |
2. Comparison of Chemical Composition (wt %)
| Steel Plate Grade | C | Si | Mn | P | S | Cu | Cr | Ni |
|---|---|---|---|---|---|---|---|---|
| LR Grade B | ≤ 0.21 | ≤ 0.35 | ≥ 0.80 | ≤ 0.035 | ≤ 0.035 | ≤ 0.35 | ≤ 0.30 | ≤ 0.30 |
| CCS Grade B | ≤ 0.21 | ≤ 0.35 | ≥ 0.80 | ≤ 0.035 | ≤ 0.035 | ≤ 0.35 | ≤ 0.30 | ≤ 0.30 |
| ABS Grade B | ≤ 0.21 | ≤ 0.35 | ≥ 0.80 | ≤ 0.035 | ≤ 0.035 | ≤ 0.35 | ≤ 0.30 | ≤ 0.30 |
| DNV Grade B | ≤ 0.21 | ≤ 0.35 | ≥ 0.80 | ≤ 0.035 | ≤ 0.035 | ≤ 0.35 | ≤ 0.30 | ≤ 0.30 |
| BV Grade B | ≤ 0.21 | ≤ 0.35 | ≥ 0.80 | ≤ 0.035 | ≤ 0.035 | ≤ 0.35 | ≤ 0.30 | ≤ 0.30 |
| NK Grade B | ≤ 0.21 | ≤ 0.35 | ≥ 0.80 | ≤ 0.035 | ≤ 0.035 | ≤ 0.35 | ≤ 0.30 | ≤ 0.30 |
| KR Grade B | ≤ 0.21 | ≤ 0.35 | ≥ 0.80 | ≤ 0.035 | ≤ 0.035 | ≤ 0.35 | ≤ 0.30 | ≤ 0.30 |
| RINA Grade B | ≤ 0.21 | ≤ 0.35 | ≥ 0.80 | ≤ 0.035 | ≤ 0.035 | ≤ 0.35 | ≤ 0.30 | ≤ 0.30 |
3. Comparison of Mechanical Properties
| Steel Plate Grade | Yield Strength (ReH) | Tensile Strength (Rm) | Elongation (A) | Impact Energy (0℃) |
|---|---|---|---|---|
| LR Grade B | ≥ 235 MPa | 400 - 520 MPa | ≥ 22 % | ≥ 27J |
| CCS Grade B | ≥ 235 MPa | 400 - 520 MPa | ≥ 22 % | ≥ 27J |
| ABS Grade B | ≥ 235 MPa | 400 - 520 MPa | ≥ 22 % | ≥ 27J |
| DNV Grade B | ≥ 235 MPa | 400 - 520 MPa | ≥ 22 % | ≥ 27J |
| BV Grade B | ≥ 235 MPa | 400 - 520 MPa | ≥ 22 % | ≥ 27J |
| NK Grade B | ≥ 235 MPa | 400 - 520 MPa | ≥ 22 % | ≥ 27J |
| KR Grade B | ≥ 235 MPa | 400 - 520 MPa | ≥ 22 % | ≥ 27J |
| RINA Grade B | ≥ 235 MPa | 400 - 520 MPa | ≥ 22 % | ≥ 27J |
Note: When substituting equivalent materials, suppliers must be required to provide factory approval certificates and product inspection certificates from the corresponding classification society. Without classification society certification, the material cannot be used in shipbuilding, even if the material composition is identical.
We can provide dual or multiple classification society certifications upon customer request, fully meeting the ship engineering acceptance standards of various countries and regions.
Recent Article
Customer Cooperation
Customers choose to engage in long-term cooperation with Yuxin Steel not only because of our high-quality products and services, as well as our strong reputation in the international market, but also due to our experienced one-stop raw material supply and further steel processing capabilities!
