LR DH42 and LR D42 are two grades of high-strength structural steel plates specifically designed for use in the marine industry. These grades offer excellent mechanical properties, corrosion resistance, and weldability, making them ideal for constructing ships, offshore platforms, and other marine structures.

Chemical Composition

The chemical composition of LR DH42 and LR D42 steel plates is carefully controlled to ensure their desired mechanical properties. These plates typically contain carbon (C), manganese (Mn), phosphorus (P), sulfur (S), silicon (Si), and other alloying elements such as chromium (Cr), nickel (Ni), copper (Cu), and molybdenum (Mo) in specific ranges.

Mechanical Properties

The mechanical properties of LR DH42 and LR D42 steel plates are outstanding, with high yield strength, tensile strength, and elongation values. These plates also exhibit good impact toughness and are suitable for use in low-temperature environments.

Heat Treatment

To achieve the desired mechanical properties, LR DH42 and LR D42 steel plates undergo controlled heat treatment processes, such as normalizing or quenching and tempering. These processes help to optimize the microstructure of the steel, ensuring consistent and reliable performance in marine applications.

Size Range

TJC Steel offers LR DH42 and LR D42 steel plates in a wide range of sizes, thicknesses, and widths to cater to the diverse needs of the marine industry. These plates are available in both standard and custom dimensions, tailored to meet specific project requirements.

Impact Testing

Impact testing is a crucial aspect of ensuring the structural integrity of marine steel plates. LR DH42 and LR D42 plates are subjected to rigorous impact testing at various temperatures to assess their ability to withstand sudden loads and impacts without failing.

Main Applications

LR DH42 and LR D42 steel plates are widely used in the construction of ships, offshore platforms, and other marine structures that require high strength and durability. Their excellent mechanical properties and corrosion resistance make them suitable for use in both freshwater and saltwater environments.

TJC Steel Supply Cases

TJC Steel has a proven track record in supplying LR DH42 and LR D42 steel plates to various marine projects worldwide. We have successfully delivered high-quality steel plates to numerous shipbuilders, offshore companies, and other marine engineering firms, contributing to the safe and efficient construction of marine structures.

In conclusion, LR DH42 and LR D42 steel plates from TJC Steel offer exceptional performance in marine applications, backed by rigorous quality control, advanced manufacturing processes, and a commitment to customer satisfaction.