GB 16MnDR Steel Plate

Overview of GB 16MnDR Steel Plate

GB 16MnDR is the premier low-temperature pressure vessel steel grade specified under the Chinese standard GB 3531 (integrated into GB 713 series). The “16” represents a nominal carbon content of 0.16%, “Mn” indicates its manganese-alloyed composition, “D” stands for Low Temperature (Diwen), and “R” signifies its certification for Pressure Vessels (Rongqi). Specifically engineered for service environments down to -40°C, 16MnDR provides an exceptional combination of high yield strength and superior low-temperature notch toughness, making it indispensable for cryogenic storage and energy infrastructure.

Shandong Tanglu Metal Material Co., Ltd. specializes in supplying high-purity GB 16MnDR plates that exceed standard industrial requirements. Our plates are produced using advanced vacuum degasification and fine-grain practice to ensure a homogenous microstructure. This grade is vital for B2B buyers in the LNG, petrochemical, and gas processing sectors where material failure at sub-zero temperatures is not an option. Each plate is delivered in a strictly Normalized (N) condition, accompanied by full Mill Test Certificates (MTC) and documented Charpy V-notch impact test results.

Key Features and Cryogenic Advantages

The defining engineering advantage of GB 16MnDR is its reliable impact energy absorption at -40°C. By strictly controlling the Carbon Equivalent (CEV) and utilizing high Aluminum (Al) content for grain refinement, this steel maintains its ductility and resists brittle fracture even in extreme cold. The extremely low Sulfur (S) and Phosphorus (P) content further enhances the material’s internal cleanliness, ensuring high-integrity performance in pressurized systems.

From a fabrication perspective, GB 16MnDR offers excellent weldability and cold-forming characteristics. It is highly responsive to precision CNC plasma and flame cutting, and its fine-grain structure ensures that the mechanical properties remain stable after rolling or bending into vessel shells. For technical safety, we provide optional HIC (Hydrogen-Induced Cracking) testing and Z-direction testing (Z15/Z25/Z35) to prevent lamellar tearing in complex welded structures. Choosing Tanglu’s 16MnDR means securing a material that combines proven cryogenic safety with outstanding industrial workability.

Main Applications of GB 16MnDR Steel

GB 16MnDR is the foundational material for equipment operating in cold climates or processing cryogenic fluids. Its primary use is in the fabrication of low-temperature separators, heat exchangers, and storage tanks for liquefied petroleum gas (LPG) and other pressurized gases. In the petrochemical industry, it is widely used for ammonia synthesis equipment and various pressurized vessels that undergo low-temperature thermal cycling.

Beyond petrochemical plants, 16MnDR is essential for the construction of road and rail tankers designed for the safe transport of hazardous liquefied gases. It is also a preferred choice for offshore platforms and arctic engineering projects where structural components must withstand severe sub-zero temperatures. Due to its specialized low-temperature certification, GB 16MnDR is the trusted global standard for high-safety, low-temperature pressure vessel applications.