316 Stainless Steel & 316L Stainless Steel

Alloy is 316 / 316L are molybdenum-austenitic stainless steel. The nickel and molybdenum allows higher content in this grade corrosion resistant properties better overall interpretation than 304, especially for pitting and crevice corrosion in chloride environments. Additionally, Alloy 316 / 316L provides an elevated temperature tensile, creep and stress-rupture excellent strengths, as well as outstanding formability and weldability. 316L is the low carbon version of 316 and more it is immune from sensitization; therefore, it is often used in heavy gauge welded components.

Applications:

-Food preparation equipment, especially in chloride environments
-Chemical processing, equipment
-Laboratory benches and equipment
-Rubber, plastics, pulp & paper machinery
-Pollution control equipment
-Boat fittings, value and pump trim
-Heat exchangers
-Pharmaceutical and textile industries
-Condensers, evaporators and tanks

Corrosion Resistance:

-Generally more resistant than 304 in range of atmospheric environments and many corrosive media due to the increased chromium
and molybdenum content.
-Subject to pitting and crevice corrosion in warm chloride environments, and to stress corrosion cracking above about 122°F (50°C).
-Considered resistant to potable water with up to about 1000mg/L chlorides at ambient temperatures, reducing to about 500mg/L at
140°F (60°C).
-Usually regarded as the “marine grade stainless steel” – but is not resistant to warm sea water.

Machineability:

-Type 316/316L is somewhat more difficult to machine than Type 304 because of its toughness.
-316/316L machines with chip characteristics that are tough and strong.
-Chip breakers and curlers are advised.
-As large a tool as possible and great amounts of cutting fluid should be used.
-Heavy positive feeds at low speeds should be considered since 316/316L work hardens rapidly.

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