Stainless Steel, Austenitic1.4404 (316L)

Low carbon chromium-nickel-molybdenum austenitic stainless steel.

316L, the low carbon version of 316 stainless steel, is immune to grain boundary carbide precipitation (sensitisation). This makes it suited to use in heavy gauge (over about 6mm) welded components.

Stainless steel types 1.4401 and 1.4404 are also known as grades 316 and 316L respectively. Grade 316 is an austenitic grade second only to 304 in commercial importance. 316 stainless steel contains an addition of molybdenum that gives it improved corrosion resistance. This is particularly apparent for pitting and crevice corrosion in chloride environments.

The austenitic structure of 316 stainless steel gives excellent toughness, even at cryogenic temperatures.

Property data given in this document is typical for bar and section products covered by EN standards. ASTM, EN or other standards may cover all products sold. It is reasonable to expect specifications in these standards to be similar but not necessarily identical to those given in this datasheet.

Quarto Plate is hot rolled plate over 12mm thick that has not been coiled during production. CPP is continuously produced plate up to 12mm thick that has been coiled during rolling. Sheet is cold rolled.

Property data given in this document is typical for flat rolled products covered by EN standards. ASTM, EN or other standards may cover all products sold. It is reasonable to expect specifications in these standards to be similar but not necessarily identical to those given in this datasheet.


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Range

Bar & Tube

Product Form

Imperial SizesMetric Sizes
Round Bar Bright Drawn H91⁄8" - 1"3mm - 25mm

Round Bar Smooth Turned H9/H10

7⁄8" - 3"25mm - 75mm
Round Bar Peeeled K12/K163" - 16"80mm - 340mm
Hexagon Bar0.25" - 2.75"-
Flat Bar - Hot Rolled-20mm x 10mm - 100mm x 25mm
Flat Bar - Rolled Edge-12mm x 3mm - 100mm x 12mm
Square Bar-12mm x 12mm - 50mm x 50mm
Angle-20 x 20 x 3mm - 100 x 100 x 10mm
Welded Ornamental Tube Mirror Polished 600 Grit1⁄2" - 4"30mm - 50mm
Welded Tube Satin polished 320 Grit1⁄2" - 2"16mm - 50mm
Hygienic Tube - Welded, annealed, polished BA, descaled3⁄4" - 4" (16swg)-
Hygienic Tube - Welded, polished, descaled1" - 3" (1.5mm wall)-

Sheet

Polished sheet sizes are for mirror and super mirror finishes.

Polished Sheet options available: 240 Silicon, 240 Grit and various coating including Fiber Optic Laser for one or two sides.

Product FormSheet SizesThicknesses
Polished Sheet2000 x 10000.7mm - 3.0mm
Polished Sheet2500 x 12500.7mm - 6.0mm
Polished Sheet3000 x 15001.0mm - 6.0mm
Polished Sheet (Circle)2500 x 12500.7mm - 1.5mm
Sheet Cold Rolled2500 x 12504.0mm - 6.0mm
Sheet Cold Rolled3000 x 15004.0mm - 6.0mm
Sheet Cold Rolled4000 x 20002.0mm - 6.0mm
CPP Plate ID Finish2000 x 10003.0mm - 6.0mm
CPP Plate ID Finish2500 x 12503.0mm - 12.0mm
CPP Plate ID Finish3000 x 15003.0mm - 12.0mm
CPP Plate ID Finish4000 x 150010.0mm - 12.0mm
CPP Plate ID Finish4000 x 20002.0mm - 12.0mm
Quarto Plate ID Finish-5" - 125"
If you do not see what you are looking for, please contact your local service centre with your specific requirements.

Related Specifications

Stainless steel grade 1.4404/316L also corresponds to the following designations but may not be a direct equivalent:

  • UNS S31603
  • 316S11

Properties

Chemical Composition

Applications

  • Food processing equipment
  • Brewery equipment
  • Chemical and petrochemical equipment
  • Laboratory benches & equipment
  • Coastal architectural panelling
  • Coastal balustrading
  • Boat fittings
  • Chemical transportation containers
  • Heat exchangers
  • Mining screens
  • Nuts and bolts
  • Springs
  • Medical implants

Characteristics

  • Low carbon version of 316 stainless steel and immune to grain boundary carbide precipitation (sensitisation)

  • Suited to use in heavy gauge (over about 6mm) welded components

  • Improved corrosion resistance compared to 304 particularly in chloride environments
  • Excellent weldability
  • Good formability

Additional Information

Weldability

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