LR DH32 and LR D32 are high-strength shipbuilding steel grades that are widely used in the marine and offshore industries. These grades offer excellent mechanical properties, corrosion resistance, and weldability, making them suitable for constructing hulls and other critical components of ships and offshore structures.

Chemical Composition

The chemical composition of LR DH32 and LR D32 steel plates is carefully controlled to ensure optimal performance. These grades primarily consist of carbon (C), manganese (Mn), phosphorus (P), sulfur (S), silicon (Si), and other trace elements. The carbon content is kept low to enhance weldability, while the manganese content is increased to improve strength and hardness. The phosphorus and sulfur contents are strictly limited to maintain high toughness and ductility.

Mechanical Properties

The mechanical properties of LR DH32 and LR D32 steel plates are exceptional. These grades exhibit high yield strength, tensile strength, and elongation values. They also possess good impact resistance, making them suitable for use in extreme environmental conditions. The specific mechanical properties vary depending on the thickness and heat treatment state of the plate.

Heat Treatment State

LR DH32 and LR D32 steel plates are typically supplied in a normalized or controlled rolling condition. Normalizing involves heating the steel to a high temperature, holding it for a period, and then cooling it slowly to remove internal stresses and improve mechanical properties. Controlled rolling, on the other hand, involves rolling the steel at controlled temperatures to achieve desired mechanical properties.

Size Range

LR DH32 and LR D32 steel plates are available in a wide range of sizes to cater to different applications. The thickness of these plates typically ranges from 6mm to 100mm, with widths up to 3000mm and lengths up to 12000mm. Custom sizes can also be produced to meet specific requirements.

Impact Testing

Impact testing is a crucial aspect of evaluating the toughness of LR DH32 and LR D32 steel plates. This testing involves subjecting the steel to sudden impact loads at low temperatures to assess its ability to absorb energy without fracturing. The steel grades are designed to meet specific impact energy requirements, ensuring their reliability in harsh environments.

Main Application Scenarios

LR DH32 and LR D32 steel plates are widely used in the construction of ships, offshore platforms, and other marine structures. Their high strength, corrosion resistance, and weldability make them ideal for use in hulls, decks, bulkheads, and other critical components that require durability and reliability. These grades are also suitable for use in low-temperature environments due to their excellent impact resistance.

TJC Steel Supply Cases

TJC Steel is a leading supplier of LR DH32 and LR D32 steel plates, with a track record of delivering high-quality products to customers worldwide. We have extensive experience in supplying these grades to the marine and offshore industries, meeting strict quality standards and delivery deadlines. Our products have been successfully used in various shipbuilding and offshore projects, earning us the trust and satisfaction of our clients.

In conclusion, LR DH32 and LR D32 steel plates are essential materials for the marine and offshore industries, offering superior mechanical properties, corrosion resistance, and weldability. Their widespread use in shipbuilding and offshore structures attests to their reliability and performance. TJC Steel is committed to providing high-quality products and exceptional service to meet the needs of our customers in these demanding applications.