Stainless Steel 316L (UNS S31600)

SPECIFICATIONS: GRADE 316 / 316L | UNS S31600 / 31603 | ASTM/ASME A240 | Werkstoff 1.4404 / 04

All 316L at wilsonpipeline Pipe is certified to 316/316L which we stock at our warehouse in the CN with the capabilities to supply directly to countries across the world in all Stainless Steel Flanges, Stainless Steel Pipe Fittings, and Stainless Steel Pipe.

Stainless Steel 316L is the standard molybdenum bearing grade. It has an extensive variety of uses especially in marine applications due to the materials high corrosion resistance.

This stainless steel is popular for use in severely corrosive environments due to the materials immunity from boundary carbide precipitation. The material is widely used in heavy gauge welded components and weld annealing is only required where the material is for use in high stress environments.

Technical Information:

Stainless steel 316L (all) is one of the basic grade of the stainless steel range. 2% molybdenum bearing ensures better corrosion resistance than CLC 18-9L grade, particularly regarding to uniform and localised corrosion.

Stainless steel 316L is an austenitic microstructure grade, free of deleterious carbide precipitations in grain boundaries. The grade contains some residual ferrite (3%) after solution annealing (1050-1150°C – 1922-2102°F) and water quenching. Chemistry and heat treatments may be optimised in order to control the ferrite content.

Stainless steel 316L resists to wet atmosphere or room temperature solutions containing some chloride or fluoride additions. The steel is not seawater resistant. The alloy may be used in diluted sulphuric acids at low temperature (≤ 330°C – 626°F) as well as in sour organic solutions.

The grade is also well known for its higher ductility, particularly when considering cold forming.Typical values (weight %)CCrNIMoNOthers0.0201710.52.10.05–PREN (%Cr+3.3%Mo+16%N) ≥ 24Tensile properties after water quenching°C°FMinimum guaranteed values *Typical valuesEl %Y.S. 0.2%Y.S. 1%UTSY.S. 0.2%Y.S. 1%UTSMPaKsiMPaKsiMPaKsiMPaKsiMPaKsiMPaKsi20682203226038520/67076/98310443505168085451002121662419929430632804033048490724320039213720167243905720028230334506635300572118171452138056175252003044064354007521081613520380564502218029430633050093210015128193605213519165244106030

* Following EN 10088 hot rolled plates – The EN guaranteed values are valid for a thickness from 5-75mm.Impact values°C-196*-196+20θ (°C)450550650700750800850°F-452*-32068θ (°F)842102212021292138214721562KCV (J/cm²) Minimum75125187Ageing H2000200020002000500500500KCV (J/cm²) Typical125250312KCU J/cm²230245155140140145165

* Optimised heats with extra low ferrite.Interval temper °CThermal expansion αx10-6K-1°C°FResistivity (µΩ cm)Thermal conductivity (W.m-1.K-1)Specific heat (J.kg-1.K-1)Young modulus E (GPa)Shear modulus G (GPa)20-10016206875155002007720-20016.510021280165001947420-300172003928517.552018870.520-40017.5300572921953017266.520-500184007529520.554017262.55009321002254016559.5

Magnetic permeability: 1.015-1.050 (skin).Quality corrosion tests guaranteed (special request may be discussed)TESTOther nameCorrosion (1)ResultsASTM A 262 AIntergranularStep or dual structureASTM A 262 BSTREICHERIntergranular≤ 1mm/year (not sensitived)ASTM A 262 CHUEYIntergranular< 0,6mm/year*ASTM A 262 E DIN 50914 RCCMSTRAUSSIntergranularNo cracking after bendingASTM G48 APittingNot recommended (typical CCT 5°)ASTM G48 BASTM G78CreviceNot recommended (typical CCT 5°)

(1) kind of corrosion mechanism investigated

* Using low ferrite grade.

1. Wet corrosion resistance properties in medium severe conditions

2. Chemical industry (industrial phosphoric acid; Concentration < 30% P205 without abrasion; θ <60°C – 140°F)

3. Food and beverage processing industry

4. Water treatment

5. Rail and road containers and tanks

6. Household appliances

7. Building decoration