Stainless steel 316 round bars are also known as UNS S31600 grade bars. It is chromium, nickel and austenitic SS build to provide enhanced resistance in moderately corrosive environments. These are often used in process streams containing halides and chlorides. It has some amount of molybdenum improved general corrosion and chloride pitting resistance. These bars provide higher stress to rupture, tensile strength and higher creep strength at hoist temperature too. It's common practice for 316 grade to dual certified. It has a lower carbon composition with the addition of nitrogen enable to meet the mechanical properties.
Stainless steel 316 round bars resist atmospheric corrosion in moderately oxidizing and reducing environments. These bars also resist corrosion in polluted salty waters. This grade has outstanding resistance to intergranular corrosion in welded condition too. These possess excellent strength and down the toughness at cryogenic environments. When these are annealed becomes non-magnetic in nature. However, it becomes slightly magnetic in nature when these are cold worked or welded.
These are easily weldable and processed by standard shop fabrication process. In most applications, this alloy has superior corrosion resistance to other conventional grades. In the cyclic mild environments, these are not corroded. Once exclusion, it is highly oxidizing such as nitric acid where it contains molybdenum content. These bars perform well in sulfur-containing environments that are encountered in paper processing industries. Alloy 316 can be utilized in higher concentration temperature up to 38 degrees C. These have good resistance to pitting in acetic and phosphoric acids. These perform well in 20% boiling phosphoric acids.
This grade is non-toxic and bio-compatible makes it ideal for food and pharmaceutical process industries. It is utilized to handle fatty acids and hot organic acids that lower product contamination.
Stainless steel 316 round bars performs well in fresh water even that contain a high level of chlorides. The higher composition of molybdenum content makes it superior pitting resistance to traditional grades in the application, including chloride solutions, particularly in adverse environments. For instance, the corrosion resistance level will be roughly equal to reducing climates. However, in a mild environment, it has sufficient resistance that causes intergranular corrosion of welds in the heat affected zone that is due to its lower carbon amount.
SS round bars are formed with hot or cold forging methods. The hot working temperature ranges between 927 to 1204 degree C. To achieve maximum corrosion resistance it is annealed at 1038 degree C and rapidly quenched with water or air. These bars are quite ductile and form easily. The cold working method will enhance its hardness and strength. These are easily weldable by most standard process. Post-welding heat treatment is not required. 316 bars are subjected to work hardening during manufacturing that leads in chip breaking. The best machining results are gained by slower feeds, speeds, lubrication and powerful tool.
Fabricated stainless steel 316 round bars are undergone with several testing for the maximum factor of safety. Some of those are buckling or crushing test, destructive/nondestructive test, mechanical test and more.
