316L

GRADE

Grade 316L (UNS S31603, EN 1.4404) is molybdenum-bearing austenitic stainless steels, which is more resistant to general corrosion and pitting/crevice corrosion than the conventional chromium-nickel austenitic stainless steels such as Grade 304. The low carbon chemistry of 316L combined with an addition of nitrogen enables 316L to meet the mechanical properties of 316.

Grade 316L is often utilized in process streams containing chlorides or halides. The addition of molybdenum improves general corrosion and chloride pitting resistance. It also offers higher creep, stress-to-rupture, and tensile strength at elevated temperatures. In addition to excellent corrosion resistance and strength properties, the Grade 316L Cr-Ni-Mo alloys also provide excellent fabricability and formability .

PROPERTIES

  • Resists atmospheric corrosion, more resistant than grade 304
  • Resists corrosion in polluted marine atmospheres
  • Heat resistance
  • Heat treatment
  • Prevention of product contamination
  • Resistance to oxidation
  • Easily welded and processed by standard shop fabrication practices.
  • Excellent formability
  • Hot and cold working
  • Beauty of appearance
  • Ease of cleaning
  • Good strength and toughness at cryogenic temperatures
  • Ready availability of a wide range of product forms

CHEMICAL COMPOSITION AND PHYSICAL PROPERTIES FOR 316L

ItemC%Si%Mn%P%S%Ni%Cr%Mo%N%Others
Min   --- --- --- --- 10.00 16.00 2.00 --- ---
Max 0.030 0.750 2.00 0.045 0.030 14.00 18.00 3.00 0.100 ---
ItemC%Si%Mn%P%S%Ni%Cr%Mo%N%Others
Min   --- --- --- --- 10.00 16.00 2.00 --- ---
Max 0.030 0.750 2.00 0.045 0.030 14.00 18.00 3.00 0.100 ---

APPLICATION

  • Food preparation equipment
  • Chemical processing for inks, rayons, photographic chemicals….
  • Laboratory benches and equipment
  • Rubber, plastics, pulp & paper machinery
  • Pollution control equipment
  • Boat fitting, value and pump trim
  • Heat exchangers
  • Pharmaceutical industries, surgical and medical implants, including pins, screws and orthopaedic implants
  • Condensers, evaporators and tanks
  • Architecture and marine applications

SPECIFICATIONS

  • ASTM A240M – Chromium and Chromium – Nickel Stainless Steel Plate, Sheet and Strip for Pressure Vessels and for General Applications.
  • ASTM 480M – General Requirements for Flat Rolled Stainless and Heat-Resisting Steel Plate, Sheet and Strip
  • EN 10088-2 (1.4404) – Stainless Steel Technical delivery conditions for sheet, plate and strip of corrosion resisting steels for general purposes

PRODUCT FORMS

RAW MATERIAL FINISHS & AVAILABLE SIZES

No.1 A rough, dull and non-uniform surface, which results from hot rolling to the specified thickness, followed by annealing and descaling.
Range 914 (3') 1000 1219 (4') 1250 1500 1524 (5')
3.0mm ~ 10.0mm ◇ ◆ ◆ ◆ ◆ ◆
12.0mm ~ 100.0mm ◆     ◆
2D A uniform, dull silver gray finish, which results from cold rolling followed by annealing and descaling.
Range 914 (3') 1000 1219 (4') 1250 1500 1524 (5')
0.3mm ~ 3.0mm ◇ ◆ ◆ ◆ ◆ ◆
30GA ~ 11GA ◇ ◆ ◆ ◆ ◆ ◆
0.012" ~ 0.1196" ◇ ◆ ◆ ◆ ◆ ◆
2B
(Mill Finish)		 A bright, cold-rolled finish resulting in the same manner as 2D finish, except that the annealed and descaled sheet received a final light roll pass through polished rolls. This is the general-purpose cold-rolled finish that can be used, or a preliminary step to polishing.
Range 914 (3') 1000 1219 (4') 1250 1500 1524 (5')
0.3mm ~ 3.0mm ◇ ◆ ◆ ◆ ◆ ◆
30GA ~ 11GA ◇ ◆ ◆ ◆ ◆ ◆
0.012" ~ 0.1196" ◇ ◆ ◆ ◆ ◆ ◆
BA
(Bright Anneal)		 A highly reflective, mirror like finish, which was produced by bright annealing under Oxygen-free atmospheric conditions following cold rolling using polished rolls.
Range 914 (3') 1000 1219 (4') 1250 1500 1524 (5')
0.3mm ~ 2.0mm ◇ ◆ ◆ ◆ 　 　
30GA ~ 14GA ◇ ◆ ◆ ◆ 　 　
0.012" ~ 0.0747" ◇ ◆ ◆ ◆