What are the properties of 316L Stainless Steel

Marissa Jameson: What are the properties of "316L Stainless Steel"?


I am looking into buying a plain wedding band that is 2mm wide and it is made of 316L Stainless Steel and I wanted to know if this specific type of stainless steel is sturdy, if it rusts or corrodes or changes colors over time, and anything else that may be important to know regarding something that I will be wearing every day.


Best answer properties of "316L Stainless Steel"

Stainless Steel - Grade 316L - Properties, Fabrication and Applications (UNS S31603)

Chemical Formula

Fe, <0.03% C, 16-18.5% Cr, 10-14% Ni, 2-3% Mo, <2% Mn, <1% Si, <0.045% P, <0.03% S

Background

Grade 316 is the standard molybdenum-bearing grade, second in importance to 304 amongst the austenitic stainless steels. The molybdenum gives 316 better overall corrosion resistant properties than Grade 304, particularly higher resistance to pitting and crevice corrosion in chloride environments.

Grade 316L, the low carbon version of 316 and is immune from sensitisation (grain boundary carbide precipitation). Thus it is extensively used in heavy gauge welded components (over about 6mm). There is commonly no appreciable price difference between 316 and 316L stainless steel.

The austenitic structure also gives these grades excellent toughness, even down to cryogenic temperatures.

Compared to chromium-nickel austenitic stainless steels, 316L stainless steel offers higher creep, stress to rupture and tensile strength at elevated temperatures.

Key Properties

These properties are specified for flat rolled product (plate, sheet and coil) in ASTM A240/A240M. Similar but not necessarily identical properties are specified for other products such as pipe and bar in their respective specifications.


317L Stainless Steel: Higher resistance to chlorides than 316L, but with similar resistance to stress corrosion cracking.

Corrosion Resistance

Excellent in a range of atmospheric environments and many corrosive media - generally more resistant than 304. Subject to pitting and crevice corrosion in warm chloride environments, and to stress corrosion cracking above about 60°C. Considered resistant to potable water with up to about 1000mg/L chlorides at ambient temperatures, reducing to about 500mg/L at 60°C.

316 is usually regarded as the standard “marine grade stainless steel”, but it is not resistant to warm sea water. In many marine environments 316 does exhibit surface corrosion, usually visible as brown staining. This is particularly associated with crevices and rough surface finish.




Another Answer by nand_r

Ya..its a biomaterial.It has improved corrosion resistance because of its reduced carbon content.alloying elements are iron,chromium,nickel,molybdenum,manganese.
When u buy see that chromium content is above 11% to enable resist corrosion and also sufficient molybdenum because it resists pitting corrosion.and only cold worked 316L has greater tensile strength than annealed

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