Characteristics and Applications of 316 Stainless Steel Products

Q1: What is the role of molybdenum in 316 stainless steel?

A1: Molybdenum can improve the passivation ability of stainless steel, making the surface oxide film more stable and dense. It can effectively resist the corrosion of chloride ions, which is why 316 stainless steel has excellent corrosion resistance in saltwater and acidic environments.

Q2: What are the typical application fields of 316 stainless steel?

A2: It is widely used in marine equipment (such as ship hull parts, marine pipelines), chemical processing equipment (reactors, storage tanks), food processing (especially high-salt food), medical equipment, and coastal architectural decorations.

Q3: What is the corrosion resistance of 316 stainless steel compared to 304?

A3: 316 stainless steel has significantly better corrosion resistance than 304, especially in environments containing chloride ions. For example, in seawater, 304 may corrode after long-term use, while 316 can maintain good performance. It also has better resistance to sulfuric acid, phosphoric acid, and other acids.

Q4: What is the mechanical property of 316 stainless steel?

A4: The tensile strength of 316 stainless steel is 515-720 MPa, the yield strength is ≥205 MPa, and the elongation is ≥40%. It has good toughness and ductility, can be processed by stamping, bending, welding, and other processes, and is suitable for manufacturing complex-shaped products.

Q5: Is 316 stainless steel suitable for high-temperature applications?

A5: Yes, 316 stainless steel can be used continuously at temperatures up to 870°C, which is similar to 304. But in high-temperature and high-corrosion environments, 316's performance is more stable. However, it should be avoided to use it in a reducing atmosphere above 600°C for a long time.

Q6: What is the difference between 316 and 316L stainless steel?

A6: Similar to the 304/304L series, the main difference is the carbon content. 316 has a carbon content of ≤0.08%, and 316L is ≤0.03%. 316L has better intergranular corrosion resistance and weldability, suitable for large-scale welding structures and environments requiring high corrosion resistance.