- High strength with reduced weight
These high-strength low-alloy ship plates reduce vessel weight by about 15–25% compared with ordinary carbon steel, improving fuel efficiency and structural performance.
- Good weldability and processability
Suitable for both large shipyards and small repair workshops using standard welding and cutting methods.
- Toughness for Marine Environments
- Designed to maintain structural reliability under:
- Wave impact
- Vibration
- Temperature variation
- Long-term saltwater exposure
AH36 vs DH36 vs EH36 - Grade Differences
The main difference is impact test temperature, which relates to toughness performance under colder working conditions.
| Grade | Impact Test Temperature | Typical Usage Scenario |
|---|---|---|
| AH36 steel | 0°C | General hull structure, decks, stiffeners |
| DH36 steel | -20°C | Ships in colder waters, enhanced decks and bulkheads |
| EH36 steel | -40°C | Offshore platforms, deep-sea equipment, high-strength load-bearing parts |
-
Chemical Composition (Typical Range)
| Grade | C | Mn | Si | P (max) | S (max) | Nb/V/Ti (Microalloy) |
|---|---|---|---|---|---|---|
| AH36 / DH36 / EH36 | ≤0.18 | 0.90–1.60 | 0.10–0.50 | 0.035 | 0.035 | Allowed (for strength & toughness) |
-
Mechanical Properties
| Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) |
|---|---|---|---|
| AH36 / DH36 / EH36 | ≥355 | 490–620 | ≥21 |
-
Typical Stock Dimensions
| Thickness | Width | Length | Supply Notes |
|---|---|---|---|
| 6–50mm | 1500–3200mm | 6000–12000mm | Typical available specifications, mixed sizes allowed |
ship plate replacement
Certification and Classification Considerations
Shipbuilding plate should match the required classification standard:
| Classification | Common Regions / Uses |
|---|---|
| ABS | Global commercial and cargo fleets |
| LR / BV | Europe, Africa, Middle East marine markets |
| DNV | Offshore engineering and Northern Europe operations |
If working on classed ship parts, the certificate must match the steel grade and heat number used.
Equivalent & Replaceability Guidance (Practical Purchasing Notes)
| Steel Grade | Comparable Materials | Replaceability Notes |
|---|---|---|
| AH36 | Q345 / S355 | Can be substituted in non-classed general marine fabrication |
| DH36 / EH36 | Higher notch toughness variants | Must follow ship classification requirements; matching certificate is critical |
If the steel forms part of a class-inspected structure, do not substitute without classification approval.
Conclusion: How to Balance Cost, Availability & Certification
When choosing among AH36, DH36, and EH36 steel, consider:
- Operating temperature of the vessel or offshore structure
- Whether classification approval is required
- Batch size and delivery timeline
Even small quantity supply must still meet the traceability and certification required for marine work.
Sourcing Support (For Small-Batch and Replacement Orders)
If you are working with:
- Ship repair projects
- Offshore component fabrication
- Regional marine steel distribution
We can support 1–50 ton flexible MOQ, ABS / LR / BV / DNV certification, and cut-to-size processing suitable for urgent and mixed-size delivery.
WHY GNEE:
Small quantity orders accepted (1–30 tons)
6–50mm common thicknesses available
ABS / LR / BV / DNV certifications optional
Cut-to-size, beveling, and rust-preventive coating services
Fast quotation and reliable export packaging
If you want to learn more about GNEE's products, you can send an email to alloy@gneesteelgroup.com. We are more than happy to assist you.
| ABS Steel Plate Grade Supplier | ||||
| General Strength | ABS Grade A | ABS Grade B | ABS Grade D | ABS GradeE |
| High Strength | ABS Grade AH32 | ABS Grade DH32 | ABS Grade EH32 | ABS Grade FH32 |
| ABS Grade AH36 | ABS Grade DH36 | ABS Grade EH36 | ABS Grade FH36 | |
| ABS Grade AH40 | ABS Grade DH40 | ABS Grade EH40 | ABS Grade FH40 | |
| Extra Strength | ABS Grade AQ43 | ABS Grade DQ43 | ABS Grade EQ43 | ABS Grade FQ43 |
| ABS Grade AQ47 | ABS Grade DQ47 | ABS Grade EQ47 | ABS Grade FQ47 | |
| ABS Grade AQ51 | ABS Grade DQ51 | ABS Grade EQ51 | ABS Grade FQ51 | |
| ABS Grade AQ56 | ABS Grade DQ56 | ABS Grade EQ56 | ABS Grade FQ56 | |
| ABS Grade AQ63 | ABS Grade DQ63 | ABS Grade EQ63 | ABS Grade FQ63 | |
| ABS Grade AQ70 | ABS Grade DQ70 | ABS Grade EQ70 | ABS Grade FQ70 | |
| ASTM A131 Grade Supplier | ||||
| Ordinary strength | ASTM A131 Grade A | ASTM A131 Grade B | ASTM A131 Grade D | ASTM A131 Grade E |
| low - temperature toughness | ASTM A131 Grade AH32 | ASTM A131 Grade AH36 | ASTM A131 Grade AH40 | |
| / | ||||
| Medium - low temperature toughness | ASTM A131 Grade DH32 | ASTM A131 Grade DH36 | ASTM A131 Grade DH40 | |
| / | ||||
| Better low - temperature toughness | ASTM A131 Grade EH32 | ASTM A131 Grade EH36 | ASTM A131 Grade EH40 | |
| / | ||||
| Ultra - low temperature toughness | ASTM A131 Grade FH32 | ASTM A131 Grade FH36 | ASTM A131 Grade FH40 | |
| / | ||||
| CCS Steel Plate Grade Supplier | ||||
| General Strength | CCS Grade A | CCS Grade B | CCS Grade D | CCS GradeE |
| High Strength | CCS Grade AH32 | CCS Grade DH32 | CCS Grade EH32 | CCS Grade FH32 |
| CCS Grade AH36 | CCS Grade DH36 | CCS Grade EH36 | CCS Grade FH36 | |
| CCS Grade AH40 | CCS Grade DH40 | CCS Grade EH40 | CCS Grade FH40 | |
| Extra Strength | CCS Grade AQ43 | CCS Grade DQ43 | CCS Grade EQ43 | CCS Grade FQ43 |
| CCS Grade AQ47 | CCS Grade DQ47 | CCS Grade EQ47 | CCS Grade FQ47 | |
| CCS Grade AQ51 | CCS Grade DQ51 | CCS Grade EQ51 | CCS Grade FQ51 | |
| CCS Grade AQ56 | CCS Grade DQ56 | CCS Grade EQ56 | CCS Grade FQ56 | |
| CCS Grade AQ63 | CCS Grade DQ63 | CCS Grade EQ63 | CCS Grade FQ63 | |
| CCS Grade AQ70 | CCS Grade DQ70 | CCS Grade EQ70 | CCS Grade FQ70 | |
| LR Steel Plate Grade Supplier | ||||
| General Strength | LR/A | LR/B | LR/D | LR/E |
| High Strength | LR/AH32 | LR/DH32 | LR/EH32 | LR/FH32 |
| LR/AH36 | LR/DH36 | LR/EH36 | LR/FH36 | |
| LR/AH40 | LR/DH40 | LR/EH40 | LR/FH40 | |
| Extra Strength | LR/AH42 | LR/DH42 | LR/EH42 | LR/FH42 |
| LR/AH46 | LR/DH46 | LR/EH46 | LR/FH46 | |
| LR/AH50 | LR/DH50 | LR/EH50 | LR/FH50 | |
| LR/AH55 | LR/DH55 | LR/EH55 | LR/FH55 | |
| LR/AH62 | LR/DH62 | LR/EH62 | LR/FH62 | |
| LR/AH69 | LR/DH69 | LR/EH69 | LR/FH69 | |
| DNV Steel Plate Grade Supplier | ||||
| General Strength | DNV Grade A | DNV Grade B | DNV Grade D | DNV Grade E |
| High Strength | DNV Grade A32 | DNV Grade D32 | DNV Grade E32 | DNV Grade F32 |
| DNV Grade A36 | DNV Grade D36 | DNV Grade E36 | DNV Grade F36 | |
| DNV Grade A40 | DNV Grade D40 | DNV Grade E40 | DNV Grade F40 | |
| Extra Strength | DNV Grade A420 | DNV Grade D420 | DNV Grade E420 | DNV Grade F420 |
| DNV Grade A460 | DNV Grade D460 | DNV Grade E460 | DNV Grade F460 | |
| DNV Grade A500 | DNV Grade D500 | DNV Grade E500 | DNV Grade F500 | |
| DNV Grade A550 | DNV Grade D550 | DNV Grade E550 | DNV Grade F550 | |
| DNV Grade A620 | DNV Grade D620 | DNV Grade E620 | DNV Grade F620 | |
| DNV Grade A690 | DNV Grade D690 | DNV Grade E690 | DNV Grade F690 | |
| BV Steel Plate Grade | ||||
| General Strength | BV/A | BV/B | BV/D | BV/E |
| High Strength | BV/AH32 | BV/DH32 | BV/EH32 | BV/FH32 |
| BV/AH36 | BV/DH36 | BV/EH36 | BV/FH36 | |
| BV/AH40 | BV/DH40 | BV/EH40 | BV/FH40 | |
| Extra Strength | BV/A420 | BV/D420 | BV/E420 | BV/F420 |
| BV/A460 | BV/D460 | BV/E460 | BV/F460 | |
| BV/A500 | BV/D500 | BV/E500 | BV/F500 | |
| BV/A550 | BV/D550 | BV/E550 | BV/F550 | |
| BV/A620 | BV/D620 | BV/E620 | BV/F620 | |
| BV/A690 | BV/D690 | BV/E690 | BV/F690 | |
