Grade 316H has higher strength at elevated temperatures and is sometimes used for structural and pressure-containing applications at temperatures above about 500 ☌. Grade 316L is more resistant to carbide precipitation and can be used in the above temperature range. Continuous use of 316 in the 425-860 ☌ range is not recommended if subsequent aqueous corrosion resistance is important. Good oxidation resistance in intermittent service to 870 ☌ and in continuous service to 925 ☌. This is particularly associated with crevices and rough surface finish. In many marine environments, 316 does exhibit surface corrosion, usually visible as brown staining. Considered resistant to potable water with up to about 1000 mg/L chlorides at ambient temperatures, reducing to about 500 mg/L at 60 ☌.ģ16 is usually regarded as the standard “marine grade stainless steel”, but it is not resistant to warm seawater. Subject to pitting and crevice corrosion in warm chloride environments, and to stress corrosion cracking above about 60 ☌.

Higher resistance to chlorides than 316L, but with similar resistance to stress corrosion cracking.Įxcellent in a range of atmospheric environments and many corrosive media - generally more resistant than 304. Possible alternative grades to 316 stainless steel.

If exact equivalents are needed original specifications must be consulted. The list is intended as a comparison of functionally similar materials, not as a schedule of contractual equivalents. Note: These comparisons are approximate only. Grade specifications for 316L stainless steel. Mean Co-eff of Thermal Expansion (µm/m/☌) Typical physical properties for 316-grade stainless steels. Mechanical properties of 316L stainless steel. Composition ranges for 316L stainless steel. Similar but not necessarily identical properties are specified for other products such as pipe and bar in their respective specifications. These properties are specified for the flat-rolled products (plate, sheet, and coil) in ASTM A240/A240M. The austenitic structure also gives these grades excellent toughness, even down to cryogenic temperatures.Ĭompared to chromium-nickel austenitic stainless steels, 316L stainless steel offers higher creep, stress to rupture and tensile strength at elevated temperatures. There is commonly no appreciable price difference between 316 and 316L stainless steel. Thus it is extensively used in heavy gauge welded components (over about 6mm). Grade 316L, the low carbon version of 316 and is immune from sensitization (grain boundary carbide precipitation). The molybdenum gives 316 better overall corrosion resistant properties than Grade 304, particularly higher resistance to pitting and crevice corrosion in chloride environments.

Grade 316 is the standard molybdenum-bearing grade, second in importance to 304 amongst the austenitic stainless steels.

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