16MnDR steel plate is a type of steel plate used for low-temperature pressure vessels, offering excellent low-temperature impact toughness and strength, making it suitable for low-temperature environments down to -40°C. "16Mn" indicates that the manganese (Mn) content in the steel plate is approximately 1.6%, "D" stands for low temperature, and "R" stands for pressure vessel.

Execution Standard

The execution standard for 16MnDR steel plate is GB 3531-2014. This standard specifies requirements for the chemical composition, mechanical properties, heat treatment, and testing methods of 16MnDR steel plates.

Chemical Composition

According to the GB 3531-2014 standard, the chemical composition (by weight percentage) of 16MnDR steel plate is approximately as follows:

• Carbon (C): ≤0.20%
• Silicon (Si): 0.15~0.50%
• Manganese (Mn): 1.20~1.60%
• Nickel (Ni): Not applicable
• Vanadium (V), Niobium (Nb): Not applicable
• Aluminum (Al): ≥0.02%
• Phosphorus (P): ≤0.025%
• Sulfur (S): ≤0.012%

Mechanical Properties

The mechanical property requirements for 16MnDR steel plate include:

• Tensile strength (Rm): Ranging from 440-620 MPa, depending on plate thickness
• Yield strength (ReL): Ranging from 265-315 MPa, depending on plate thickness
• Elongation (A): ≥21%
• Impact absorbed energy (KV2): ≥47J at -40°C
• 180° bending test: Bending diameter requirements vary based on thickness

Quality Control

The quality control levels for 16MnDR steel plate include:

• High purity of molten steel with extremely low impurity content
• Strict control of chemical composition and mechanical properties
• Ultrasonic flaw detection to ensure no internal defects

Application Fields

16MnDR steel plate is widely used in petroleum, chemical, fertilizer, boiler, and shipbuilding industries. It is particularly suitable for equipment such as storage tanks, pressure vessels, heat exchangers, towers, and reactors in low-temperature environments.

Summary

With its excellent low-temperature performance and strength, 16MnDR steel plate holds significant application value in the manufacturing of low-temperature pressure vessels. The GB 3531-2014 standard ensures the quality and performance of 16MnDR steel plates, meeting the requirements of engineering structures in low-temperature environments.