Grade 316 Stainless Steel: Common Type of Stainless Steel Grade

by Vidhi Gada

Posted on January 22, 2022 at 10:00 AM


The corrosion resistance of austenitic steels, commonly known as Grade 316 Stainless Steel, is exceptional. As a result, they may be used for a broad variety of surface protection applications. The low wear resistance of these stainless steels limits their application possibilities. The addition of molybdenum to type 316 stainless steel, which strengthens its resistance to chemical corrosion and marine conditions, distinguishes it from grade 304 stainless steel. These materials flourish in tougher environments, where chloride exposure or processing solvents may cause pitting and crevice corrosion.

Types of Stainless Steel Grade 316: Know about Stainless Steel

Stainless steel 316L is a low-carbon variant of 316, is resistant to grain boundary carbide precipitation (sensitisation). This makes it suitable for use in welded components with a heavy gauge (more than 6mm).

The titanium-stabilized variant, 316 Ti, is employed because of its resistance to sensitization in the 550oC-800oC temperature range.

Type 316H is a higher carbon variation of 316 that makes the steel more appropriate for use in high-temperature applications. The increased carbon content increases the tensile and yield strength of the material. The material's austenitic structure also offers it exceptional hardness, even at cryogenic temperatures.

Properties of Stainless Steel Grade 316

Corrosion Resistance: When exposed to a variety of hostile conditions and media, stainless steel 316 possesses good corrosion resistance. Although it is often referred to as "marine grade," it is not resistant to warm sea water. Pitting and crevice corrosion may occur in warm chloride conditions. Above 60°C, Grade 316 is susceptible to stress corrosion cracking.

Heat Resistance: In intermittent service to 870°C and continuous service to 925°C, stainless steel 316 offers strong oxidation resistance. If corrosion resistance in water is necessary, however, prolonged usage at 425-860°C is not suggested. Because of its resistance to carbide precipitation, 316L is preferred in this case. Grade 316H is indicated when strong strength is needed at temperatures over 500°C.

Machinability:The machinability of stainless steel 316 is exceptional. The following guidelines may help you improve your machining: The cutting edges must remain razor-sharp. Excessive work hardening is caused by dull edges.

Light cuts should be made, but they should be deep enough to avoid work hardening by riding on the material's surface. Chip breakers should be used to help keep swarf out of the way of the job.

Heat concentrates at the cutting edges due to austenitic metals' low thermal conductivity. Coolants and lubricants are thus required and must be used in huge amounts.

How to purchase the best Grade 316 Stainless Steel

It is very important to define what is the purpose of the particular project and then accordingly purchase the correct stainless steel grade. Standard 304 grades will provide equivalent performance and lifespan at a cheaper price point if you don't want the enhanced resistance of 316. However, in instances where extra resistance is required, 316 frequently extends the useful life of steel items by many years. You can maximise the financial and physical advantages of your stainless steel investment by matching the grade to your planned use and environment.These improved resistances also assist to take the guesswork out of cleaning by allowing you to clean your stainless steel more often with stronger cleaners and detergents without fear of damaging or changing its beauty. As a result, 316 is an excellent improvement for areas with stringent hygiene and cleaning requirements.

You can also read our blog on the difference between Grade 304 vs Grade 316 of Stainless Steel to get a better understanding of your requirements.

If you're not sure where to start or need a reliable partner with a broad range of stainless alternatives, the specialists at Amardeep Steel Center can help. They've been delivering companies all throughout India for many years.

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