316/316L Stainless Steel (1.4401/1.4404)

Grade 316/316L stainless steel (1.4401/1.4404) is the second most common used commercial grade of stainless steel supplied into numerous industry sectors.


Grade 316/316L is probably the second most common used commercial grade of stainless steel supplied into numerous industry sectors. It has excellent corrosion resistance in ordinary atmospheric conditions, but also has excellent corrosive resistance to more arduous environments such as salt water and environments where resistance to chloride corrosion is required. Whilst performing well when exposed to relatively high temperatures, this grade of stainless steel like most austenitic stainless grades also maintains its strength and toughness at sub-zero temperatures, making this an excellent choice for various applications and industries sectors such as oil & gas, water treatment, petrochemical and construction. 316/316L is easily machined and easy to weld.

Form of Supply

* Sheet * Square Bar * Threaded Bar
* Plate * Hexagon Bar * Fasteners and Fixings
* Round Bar * Flat Bar * Rebar
* Angle * Tube and Pipe * Wire

Nationwide Stainless are an independent Stockholder and Processor of 316/316L stainless steel. With a large stock range and excellent processing capabilities we are able to supply most projects whether stock items or custom made products. We can offer; Stock size plate & sheet, Stock length round bar, Cut to size plate & sheet, Cut to length round bar, Cold forming of plate & sheet and round bar, And any other additional machining requirements that may be necessary. Please send any enquiries to sales@nationwidestainless.co.uk


* Pipelines * Flanges and Fittings * General Construction
* Heat Exchangers * Valves * Marine Equipment
* Pressure Vessels * Processing Equipment * Submarines

Corrosion Resistance

316/316L stainless steel has excellent corrosion resistance at normal temperatures in ordinary atmospheric conditions withstanding some natural acids, chlorine and chloride. In more corrosive environments a Duplex grade may be a more suitable option for extra protection against pitting and crevice corrosion.

Typical Analysis

316L Cr% Ni% C% Si% Mn% P% S% Mo% Fe%
MIN 16.5 10.0 - - - - - 2.0 -
MAX 18.5 13.0 0.03*            

*0.08 max carbon content (C%) for 316 (1.4401)

Mechanical Properties

Properties quoted below are guideline figures only and should not be used for any design purposes.

         - 0.2% Proof (Nmm²) UTS (Nmm²) Elongation (%)
316 (1.4401) 235 530 - 730 40
316L (1.4404) 200 500 - 700 40

Related Specs & Trade Names

1.4401, 1.4404, 316/316L, Grade 316, Grade 316L, Alloy 316, Alloy 316L, AISI 316L, TYPE 316, UNS S31600, UNS S31603, UNS S31609, X2CrNiMo17-12-2, ASTM A240, ASME SA240, 316 Stainless, 316, 316L, 316H,