Stainless Steel 316L Flanges

Key Properties and Performance Characteristics

Molybdenum content between 2% and 3% gives 316L its resistance to chloride pitting, a property that standard 304 does not offer. The alloy also contains 16% to 18% chromium and 10% to 14% nickel, which together support a corrosion resistance profile suited to both acidic and alkaline environments.

316L retains mechanical strength across temperatures up to 870°C in continuous service. For cyclic high-temperature applications, the upper limit drops to around 760°C to avoid scaling. Tensile strength runs at 485 MPa minimum, with yield strength at 170 MPa minimum.

Low carbon content also makes this grade suitable for welding without post-weld annealing. That cuts fabrication time on site-built assemblies and custom piping runs.

Where SS 316L Gets Specified

Chemical processing plants use 316L for reactor vessels, tanks, and transfer piping where sulfuric acid, phosphoric acid, or chloride-bearing solutions are handled. Marine applications include offshore structural components, pump casings, and heat exchanger tubing exposed to seawater.

Pharmaceutical and food processing facilities specify 316L because the surface takes a fine finish well and resists contamination from process fluids. Pulp and paper mills use it in digesters and bleaching equipment. It is a standard in the medical device industry for implant-grade components and instruments that must be corrosion resistant and biocompatible.

316L is also used in architectural and coastal construction projects where 304 would corrode too quickly with exposure to salt air.

Ratna Exports supplies SS 316L in sheets, plates, pipes, tubes, and fittings. Contact the team directly for current stock availability, dimensions, and pricing.