AISI 316TI1.4571 – UNS S631635 – X6CrNiMoTi 17 12 2

Type 316 is an austenitic chromium-nickel stainless steel containingmolybdenum. This addition increasesgeneral corrosion resistance, improvesresistance to pitting from chloride ionsolutions, and provides increased strength at elevated temperatures. Properties are similar to those of Type 304except that this alloy is some what stronger at elevated temperatures.Corrosion resistance is improved, particularly against sulfuric, hydrochloric,acetic, formic and tartaric acids; acid sulfates and alkaline chlorides. 316Ti is a titanium stabilized version of 316. Resistance to sensitization is achieved in type 316Ti with titanium additions to stabilize the structure against chromium carbide precipitation, which is the source of sensitization. This sensitization is achieved by an intermediate temperature heat treatment, during which the titanium reacts with carbon to form titanium carbides. This significantly reduces susceptibility to sensitization in service by limiting the formation of chromium carbides. Thus, the alloy can be used for extended periods at elevated temperatures without compromising its corrossion resistance. Like types 316L and 316H, 316Ti alloys also offers excellent resistance to general corrosion and pitting / crevice corrosion.


seamless-pipe Seamless Tubes

welded-pipe Welded Tubes  stock
plate Plates
bar Bars  stock
flanges Flanges  stock
accessories Fittings


  • Exhaust manifolds
  • Furnace parts
  • Heat exchangers
  • Jet engine parts
  • Pharmaceutical and photographic equipment
  • Valve and pump trim
  • Chemical equipment
  • Digesters, tanks,evaporators
  • Pulp, paper and textile processing equipment
  • Parts exposed to marine atmospheres

General characteristics

  • All-purpose grades
  • Enhanced corrosion resistance compared to standard Cr-Ni grades
  • Excellent formability
  • Excellent weldability
  • Excellent impact strength

Technical information



316Ti – UNS S31635
Product Norm ASTM
Seamless Tubes A-213 A-312
Welded Tubes A-249 – A312
Bars A-276 A-479
Flanges A-182
Fittings A-403

Chemical specifications %


316Ti – UNS S31635
Element Simbol Maximum
Carbon C 0,08
Manganese Mn 2,00
Phosphorus P 0,045
Sulfur S 0,030
Silicon Si 1,0
Nickel Ni 10,0-14,0
Chrome Cr 16,0-18,0
Molybdenum Mo 2,00-3,00
Nitrogen N 0,10
Titanium Ti 5 x (C+N) < 0,70

Mechanical Properties

316Ti – UNS S31635
Norm Rm min. Rp 0,2% min. E4d min.% Z min.% T.I.(J) HR B HB
A-276 75 (515) 30 (205) 30 40
A-479 75 (515) 30 (205) 30 40