What is 316LN stainless steel?

316LN is a low carbon, high nitrogen stainless steel with increased strength and corrosion resistance compared to 316L. The alloy also has good resistance to pitting and crevice corrosion in chloride-containing environments. 316LN Stainless Steel is a highly durable and corrosion resistant metal alloy used in a variety of different applications. While 316LN stainless steel is commonly used in surgical instruments, valves, and marine applications, it also has many unique properties that make it an ideal material for a variety of projects.

What type of stainless steel is 316LN stainless steel?

There are many types of stainless steel, the most common grades of stainless steel are austenitic, ferritic, martensitic and duplex.

Austenitic stainless steel is the most widely used type of stainless steel. They contain high levels of chromium and nickel, which give them good corrosion resistance and good mechanical properties. Ferritic stainless steels are similar to austenitic stainless steels in their corrosion resistance but are lower in chromium and nickel. Therefore, they are not as corrosion resistant as austenitic stainless steels. Martensitic stainless steel is a type of stainless steel that has a higher carbon content than other types. This gives them good hardness and strength, but makes them more susceptible to corrosion. Duplex stainless steels are a combination of austenitic and ferritic stainless steels. They have good corrosion resistance and mechanical properties. 316LN stainless steel belongs to austenitic stainless steel products.

What are the characteristics of 316LN stainless steel?

S316LN is a material in the austenitic stainless steel series. Its performance is similar to that of S316L austenitic stainless steel, that is, N element is added to its matrix and the carbon content is reduced. And because S316L has better resistance to chloride corrosion, S316LN is better than S316L austenitic stainless steel and ordinary stainless steel in terms of intergranular corrosion resistance, pitting corrosion resistance, hole corrosion resistance and high-strength mechanical properties. Therefore, S316LN has been widely used in chemical tankers, marine engineering and chemical containers, and can even be used in nuclear energy industry.

What are the standards for 316LN stainless steel?

Name: Austenitic stainless steel

Standard: AISI, ASTM

Model: 316LN

UNS number: S31653

National standard number (GB): 0Cr17Ni13Mo2

German standard grade (DIN): X2CrNiMoN17133

What is the chemical composition of 316LN stainless steel?

316LN stainless steel is an austenitic chromium-nickel alloy with a high nickel content. It also contains a low carbon content, hence the name "Low Carbon" or "LN" grades. The addition of molybdenum increases the corrosion resistance of the alloy, making it suitable for high temperature environments. The composition of 316LN stainless steel makes it more resistant to pitting and crevice corrosion than other austenitic grades.

Carbon C:≤0.03

Manganese Mn:≤2.00

Silicon Si:≤0.75

Chromium Cr:16.0~18.0

Nickel Ni②:10.0~14.0

Phosphorus P:≤0.045

Sulfur S:≤.03

Molybdenum Mo:2.0~3.0

Nitrogen N:0.10~0.16

Note: ① unless otherwise specified, the single value is the highest value; ② when used in some pipe-making processes, the nickel content of some types of austenitic stainless steel must be slightly higher than the value shown in the table; ③ Random; ④ The maximum Ta content is 0.10%; ⑤ The maximum content is 0.75%; ⑥ The maximum content is 0.70%

What are the mechanical properties of 316LN stainless steel?

Yield strength≧305MPa

Tensile strength≧615MPa

Elongation≧30%

How is 316LN stainless steel tempered?

The 316LN stainless steel process uses slabs (mainly continuous casting slabs) as raw materials, and after heating, the rough rolling unit and the finishing rolling unit are used to make strip steel. The hot steel strip coming out of the last rolling mill of finishing rolling is cooled to the set temperature by laminar flow, and rolled into steel coil by the coiler. After cooling, the steel coil has scale on the surface and appears black, commonly known as "stainless steel black coil". . After annealing and pickling, the oxidized surface is removed, which is "stainless steel white coil". Most of the hot-rolled products circulating in the stainless steel market are stainless steel white coils.

How weldable is 316LN stainless steel?

S316LN austenitic stainless steel Austenitic stainless steel welding mainly has problems such as hot cracks, intergranular corrosion and stress corrosion, and single-phase austenitic stainless steel has a greater tendency to heat cracks. Austenitic stainless steel has high electropositive rate, high linear expansion coefficient, and low thermal conductivity, which is easy to produce tensile stress during welding. In addition, when the austenitic steel weld is crystallized, it is easy to form columnar crystals with strong direction, which is conducive to the segregation of impurities, the formation of eutectic interlayers, and hot cracks.

What are the benefits of 316LN stainless steel?

316LN stainless steel is a low carbon version of 316L stainless steel. This makes it more resistant to intergranular corrosion after welding and eliminates the need for annealing. It is also stronger than 316 at high temperatures and is often used in low temperature applications. 316LN stainless steel is a highly corrosion resistant alloy well suited for a wide range of industrial applications. LN in 316LN refers to low carbon content, specifically 0.03%max. The alloy also contains a higher nitrogen content than 316L stainless steel, which improves its resistance to pitting and crevice corrosion in chloride-containing environments. 316LN stainless steel has good mechanical properties in addition to its excellent corrosion resistance, making it ideal for many industrial applications, it is a highly durable alloy that provides strong performance in corrosive environments, its low The carbon composition makes it ideal for use with sensitive components.

What are the applications of 316LN stainless steel?

316LN is the addition of N to 316L steel to make it have the same characteristics as 316N. The use of 316LN stainless steel is equivalent to that of 316N steel, but it has excellent resistance to intergranular corrosion. Generally, it is more common in pipeline manufacturing.

Below are some common uses for 316LN:

- Pipes and pipes in chemical processing plants

-Sea water system

- Food and beverage processing

- Chloride environments such as swimming pools and salt water spray areas