Difference between CCS DH32 and CCS DH36 steel plate

CCS DH32 is a high-strength shipbuilding steel plate certified by the China Classification Society (CCS) . The "D" grade signifies it is impact tested at -20°C. It has a minimum yield strength of 315 MPa and tensile strength ranging from 440 to 570 MPa . The chemical composition is strictly controlled with carbon ≤0.18% and manganese 0.90-1.60%. It is typically supplied in hot-rolled, normalized, or TMCP conditions and is widely used for hull structures and marine engineering components.

CCS DH36 is a higher-strength marine steel also certified by CCS with impact toughness tested at -20°C . The "36" denotes a minimum yield strength of 355 MPa . It has a tensile strength ranging from 490 to 630 MPa and minimum elongation of 21% . The chemical composition includes carbon ≤0.18%, manganese 0.90-1.60%, and microalloying elements. This grade is designed for demanding structural components in shipbuilding and offshore platforms.

Both CCS DH32 and CCS DH36 are CCS-certified high-strength marine steels with impact toughness tested at -20°C, ensuring reliable performance in cold marine environments. Their primary difference lies in strength level: DH32 offers a minimum yield strength of 315 MPa with tensile strength of 440-570 MPa, suitable for general high-strength hull construction, while DH36 provides a higher minimum yield strength of 355 MPa with tensile strength reaching 490-630 MPa, designed for more demanding load-bearing applications . Both grades feature controlled chemical composition and maintain good weldability for marine service.

CCS DH32 high Strength Max Chemical Composition in Tempering and Quenching

CCS DH36 high Strength Max Chemical Composition in Tempering and Quenching

CCS DH32 high strength property in tempering and quenching

CCS DH36 high strength property in tempering and quenching