LR Grade DH36 Equivalent Materials for Shipbuilding Steel Plates
1. LR DH36 Equivalent Materials for International Classification Societies
| Classification Society | Equivalent Grade |
|---|
| LR (Lloyd’s Register) | LR DH36 |
| ABS (American Bureau of Shipping) | ABS DH36 |
| DNV (Det Norske Veritas) | DNV DH36 (NV D36) |
| BV (Bureau Veritas) | BV DH36 |
| CCS (China Classification Society) | CCS DH36 |
| NK (Nippon Kaiji Kyokai) | NK D36 |
| KR (Korea Register of Shipping) | KR D36 |
| RINA (Italian Register of Shipping) | RINA DH36 |
2. Key Performance Requirements
Mechanical Properties
| Yield Strength (ReH), MPa | Tensile Strength (Rm), MPa | Elongation (A), % |
|---|
| ≥ 355 | 490 - 630 | ≥ 21 |
Impact Properties
| Thickness, mm | Temperature, ℃ | Impact Energy, KV2 / J |
|---|
| Longitudinal | Transverse |
|---|
| ≤ 50 | - 20 | ≥ 34 | ≥ 24 |
| > 50 - 70 | - 20 | ≥ 41 | ≥ 27 |
| > 70 - 150 | - 20 | ≥ 50 | ≥ 34 |
Carbon Equivalent
| Thickness (mm) | 5 - 50 | 50 - 150 |
|---|
| CEV (wt %) | ≤ 0.38 | ≤ 0.40 |
Note: In terms of physical and chemical properties, marine steel plates of the same grade (with identical letters and numbers) are considered equivalent across major classification societies. When used for compliance with classification rules, steel plates certified by multiple classification societies may be used interchangeably; if certified by only a single classification society, approval for material substitution must be obtained from the target classification society before use across societies.
