SA516 Alloy Steel Plate Introduction

SA516 series steel plates are made of pressure vessel steel in accordance with the American ASME standard. They have excellent mechanical properties and corrosion resistance and are widely used in pressure vessels and other structural materials in the fields of petroleum, chemical, electric power, shipbuilding, medicine, etc. The following is a detailed analysis of SA516 series steel plates:

First, series overview

SA516 series steel plates mainly include SA516Gr60, SA516Gr65, SA516Gr70 and other grades. These steel plates are low-alloy high-strength steel plates with good comprehensive performance.

Second, chemical composition

Taking SA516Gr70 as an example, its chemical composition mainly includes carbon (C), silicon (Si), manganese (Mn), phosphorus (P), sulfur (S), chromium (Cr), nickel (Ni), molybdenum (Mo) and other elements. The content of these elements has an important influence on the mechanical properties and corrosion resistance of the steel plate. Specifically, the chemical composition of SA516Gr70 is as follows:

C (carbon): 0.23%~0.33%

Si (silicon): 0.15%~0.35%

Mn (manganese): 0.40%~0.65%

P (phosphorus): ≤0.035%

S (sulfur): ≤0.035%

Cr (chromium): 0.22%~0.32%

Ni (nickel): ≤0.25%

Mo (molybdenum): ≤0.16%

Third, mechanical properties

SA516 series steel plates have excellent mechanical properties. Taking SA516Gr70 as an example, its mechanical properties mainly include tensile strength, yield strength, elongation and hardness, as follows:

Tensile strength: ≥885MPa

Yield strength: ≥588MPa

Elongation: ≥19%

Hardness: ≤189HBW

Fourth, application fields

SA516 series steel plates are widely used in the following fields:

Pressure vessels: such as reactors, distillation towers, storage tanks, etc. These equipment need to withstand high pressure and temperature, and SA516 series steel plates can meet these requirements.

Pipelines: such as pipelines and steam pipelines in the fields of petroleum and chemical industry, SA516 series steel plates have good corrosion resistance and strength, and are suitable for use in these environments.

Structural parts: such as brackets, frames, platforms, etc., SA516 series steel plates have good processing and welding properties, and are convenient for making various structural parts.

Shipbuilding: such as hulls, decks, etc., SA516 series steel plates can meet the strength and corrosion resistance requirements of ship structures.

Medical field: such as fermentation tanks, reactors and other equipment, these equipment need to withstand certain pressures and temperatures, and require materials to have good corrosion resistance and hygienic properties, SA516 series steel plates can meet these requirements.

The manufacturing process of SA516 series steel plates mainly includes smelting, continuous casting, rolling, heat treatment and other links. These links strictly control the chemical composition, organization and performance of the steel plates to ensure that the steel plates meet the requirements of relevant standards.

In short, SA516 series steel plates are a high-performance steel material with a wide range of applications in the industrial field. We should attach importance to quality control during its production and use to ensure that it meets the requirements of relevant standards and provide more reliable guarantees for industrial development.