GNEE GROUP

EH36 vs DH36: What is the difference between EH36 and DH36 steel?

EH36 is a high-strength shipbuilding steel approved by classification societies such as the American Bureau of Shipping (ABS) and Lloyd’s Register (LR). The “E” in EH36 stands for “Extreme” conditions, indicating enhanced toughness at low temperatures, making it particularly suitable for Arctic applications.

DH36, on the other hand, is a high-strength steel with similar applications but primarily designed for standard offshore and marine use. It provides excellent mechanical properties and weldability, and is widely recognized for use in moderate environments.

While both grades serve marine construction, understanding their differences is crucial when designing vessels and offshore structures exposed to extreme cold and dynamic loads.

EH36 vs DH36 Chemical Composition Differences

EH36 vs DH36 Mechanical Properties

The Application Choice between EH36 and DH36 

Arctic Operations: Icebreaking vessels, Arctic offshore platforms, and cold-water research ships benefit from EH36’s superior low-temperature toughness.

Offshore Platforms: Standard offshore structures, moderate-latitude ships, and conventional cargo vessels can reliably use DH36.

Marine Equipment: Cranes, decks, and bulkheads in cold regions require EH36, while similar equipment in moderate climates can utilize DH36.

EH36’s enhanced toughness ensures structural integrity and reduces the risk of brittle failure in subzero conditions, making it ideal for extreme environments.

Conclusion

EH36 and DH36 are both high-strength steel grades widely used in shipbuilding and offshore applications. EH36 stands out for extreme low-temperature performance and enhanced toughness, making it ideal for Arctic environments. DH36 remains a strong choice for conventional offshore and marine structures, offering high strength and good weldability.