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AUSTENITIC STAINLESS STEEL X6CRNIMOTI17-12-2, 1.4571, AISI 316TI, UNS S31635 RESISTANT TO INTERGRANULAR CORROSION ACCORDING TO EN 10088-1, PN-71/H-86020, ASTM A276.

Standard Steel Grade
Chemical Composition %
C: Mn: Si: P: S: Cr: Ni: Mo: Ti:
EN X6CrNiMoTi17-12-2 - 1.4571
<0.08 <2.0 <1.0 <0.045 <0.015 16.5 - 18.5 10.5 - 13.5 2.0 - 2.5 <0.7
ASTM AISI 316Ti - TP 316Ti - UNS S31635
<0.08 <2.0 <1.0 <0.045 <0.030 16.0 - 18.0 10.0 - 14.0 2.0 - 3.0 <0.7
AF Z6CNDT17-12 - Z 6 CNDT 17-2
<0.06 <2.0 <0.75 <0.040 <0.015 16.0 - 18.0 10.5 - 12.5 2.00 - 2.50 <0.7
PN H17N13M17T
<0.08 <2.0 <0.8 <0.045 <0.030 16.0 - 18.0 11.0 - 14.0 2.0 - 2.5 <0.7
PN H18N10M18T
<0.1 <2.0 <0.8 <0.045 <0.030 17.0 - 20.0 9.0 - 11.0 1.5 - 2.2 <0.8
GOST 08Х17Н13М2Т
<0.08 <2.0 <0.8 <0.035 <0.020 16.0 - 18.0 12.0 - 14.0 2.0 - 3.0 <0.7

X6CrNiMoTi17-12-2, 1.4571, AISI 316Ti - application and specification

X6CrNiMoTi17-12-2 / 1.4571 steel is austenitic grade stabilized with titanium, resistant to intergranular corrosion, pitting corrosion, most acids and salts in moderate concentrations. It is characterized by relatively good strength properties at elevated temperatures and good weldability. It exhibits significantly better resistance to crevice and pitting corrosion compared to X5CrNi18-10 / 1.4301 steel.

The addition of Titanium in the grade plays the role of the additional carbide-forming element, which helps to maintain a stable concentration of chromium during heat treatment, and prevents intergranular corrosion during welding. The 1.4571 steel has a high thermal expansion coefficient, is more resistant to elevated temperatures, but is susceptible to deformation - especially at smaller dimensions due to inferior thermal conductivity.

Compared to other austenitic steels, AISI 316Ti can exhibit magnetism after heat treatment. The steel is characterized by good ductility and plasticity, cold bending and pressing is not a problem. It is worth adding that steel does not require additional thermal processes after welding and can work at 870 operating temperatures Mechanical treatment of materials in the aforementioned group of materials is difficult.

X6CrNiMoTi17-12-2 grade is resistant to solutions of hot sulfuric acid, boiling organic acids, nitric acid and sulfuric acid reagents, environments containing sulfur dioxide, phosphoric acid at room and low temperatures, orthoboric acid, benzoic acid, formic acid, tartaric acid, lactic acid, oleic acid, acids found in food industry, acetic acid, numerous hydroxides. This also applies to salts - nitrates, borates, bromides and chlorides. 316Ti is not suitable for use in environments containing solutions of hydrochloric, nitric and hydrofluoric acids.

Steel is used in shipbuilding, chemical, dyeing, brewing, off-shore, pharmaceutical, textile, petrochemical, plastics and paper industries, in the production of chemical tanks, heat exchangers, fittings and installations for the production of chemical reagents, components - bolts, nuts working in contact with salts, parts and components of ships and ships, medical implants, surgical implants, springs, in construction for elements of balustrades, frames, ornaments, welded fittings, installations, parts of machines producing rubber.


Mechanical properties of 1.4571, X6CrNiMoTi17-12-2

Supersaturated delivery condition +AT

  • Hot-Rolled Peeled Bars
    • Tensile strength, Rm: 500 - 700 MPa
    • The yield point, Re: > 200 MPa
    • Hardness, HB: <215
  • Drawn bars
    • Tensile strength, Rm: 500 - 950 MPa
    • The yield point, Re: > 200 MPa
    • Elongation, A:> 25%
    • Impact resistance, KV20℃: >100J
  • Drawn wires
    • Tensile strength, Rm: < 1100 MPa
    • Elongation, A:> 20%
  • Cold-rolled strips
    • Tensile strength, Rm: 540 - 690 MPa
    • The yield point, Re: > 240 MPa
    • Elongation, A:> 40%
  • Hot-rolled sheets
    • Tensile strength, Rm: 520 - 670 MPa
    • The yield point, Re: > 220 MPa
    • Elongation, A:> 40%
    • Impact resistance, KV20℃: >60J (>10mm)
  • Seamless cold-finished tubes
    • Elongation, A:> 30%
    • Impact resistance, KV20℃: >60J
  • Seamless hot-rolled tubes
    • Tensile strength, Rm: 225 - 740 MPa
    • The yield point, Re: > 190 MPa
    • Elongation, A:> 40%
    • Impact resistance, KV20℃: >60J
  • Cold-cured wires
    • +C500 - Rm: 500 - 700 MPa
    • +C600 - Rm: 600 - 800 MPa
    • +C700 - Rm: 700 - 900 MPa
    • +C800 - Rm: 800 - 1000 MPa
    • +C900 - Rm: 900 - 1100 MPa
    • +C1000 - Rm: 1000 - 1250 MPa
    • +C1100 - Rm: 1100 - 1350 MPa
    • +C1200 - Rm: 1200 - 1450 MPa
    • +C1400 - Rm: 1400 - 1700 MPa
    • +C1600 - Rm: 1600 - 1900 MPa
    • +C1800 - Rm: 1800 - 2100 MPa
  • Other mechanical and physical properties
      Modulus of elasticity, E = 200 GPa
    • Heat capacity, cp = 500 J * kg-1 * K-1
    • Thermal conductivity, λ = 15 W * m-1 * K-1
    • Specific resistance, Ω: 0.75 mkOhm * m

Mechanical properties when working in elevated temperatures

Properties Temperature (℃)
100 150 200 250 300 350 400 450 500 550
The yield point, Rp0,2 (MPa) >185 >175 >165 >155 >145 >140 >135 >131 >129 >127

Heat and plastic processes of 1.4571, X6CrNiMoTi17-12-2 steel:

  • Rolling and forging at temperatures 1200 - 900 ℃
  • Supersaturation at 1020 - 1120 ℃ with cooling in water or air

In the aforementioned grades we supply companies with:

  • Peeled and drawn stainless steel bars X6CrNiMoTi17-12-2, 1.4571, AISI 316Ti
  • Cold-rolled and hot-rolled stainless steel sheets and elements cut from sheets, X6CrNiMoTi17-12-2, 1.4571, AISI 316Ti
  • Forgings, rings, forged bars X6CrNiMoTi17-12-2, 1.4571, AISI 316Ti
  • Stainless drawn wires
  • Cold-rolled stainless strips X6CrNiMoTi17-12-2, 1.4571, AISI 316Ti
  • Seamless and seamed tubes
  • Capillary tubes X6CrNiMoTi17-12-2, 1.4571, AISI 316Ti

Other substitutes and equivalents of the X6CrNiMoTi17-12-2, 1.4571 grade:

4571, SUS, AISI 316TI, TP316TI, H17N13M2T, X8CRNIMOTI17122, 10TIMONICR175, Z6CNDT17-12, 320S31, SS2350, 06CR17NI12MO2TI, X3CRNIMO18-12-3, 1.4449, CSN/STN 17348, Z8CNDT17-12, X10CRNIMOTI18-12, 1.4573, X6CRNIMOTI17-12-2S, 1.4579, H17N13M2T, H18N10MT, F-310.B, UNS S31635, 08Х17Н13М2Т, 05Х17Н13М2Т, 06Х17Н13М2Т, 10Х17Н13М2Т, 08H17N13M2T, 08CH17N13M2T, 06CH17N13M2T, 06H17N13M2T, 10CH17N13M2T, 10H17N13M2T.

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