Knowledge
Equivalent Materials for CCS DH36 Steel
CCS DH36 is a high-strength hull structural steel certified by the China Classification Society (CCS), with core properties including: yield strength ≥355 MPa, tensile strength 490–630 MPa, and impact energy ≥34 J (longitudinal) at –20 °C. It has direct equivalents in the standards of major classification societies worldwide; these grades have essentially identical chemical compositions and mechanical properties and can be used interchangeably, provided that certification from the relevant classification society is provided.
Storage, Transport and Corrosion Prevention of CCS DH36 Shipbuilding Steel Plates
When procuring CCS DH36 shipbuilding steel plates, attention must not only be paid to the production quality of the product, but also to the standardised management of storage, transport and corrosion prevention. Improper daily management can easily lead to surface rusting, plate deformation and a decline in internal properties, thereby affecting the quality of subsequent welding and assembly.
Differences Between CCS AH36, DH36 and EH36 Shipbuilding Plates
CCS AH36, DH36 and EH36 are all 360 MPa-grade high-strength hull structural steels certified by the China Classification Society (CCS), and comply with the GB/T 712-2022 standard ‘Structural Steel for Ships and Offshore Structures’. The three grades have identical basic mechanical properties, such as yield strength, tensile strength and elongation; the key distinction lies in low-temperature impact toughness, which in turn leads to differences in chemical composition, production processes, application scenarios and cost.
