1.4571 / 316 TI

Non-corrosive, austenitic chrome-nickel steel

1.4571/316 Ti is a stainless steel, austenitic chromium-nickel steel, which is characterised by its increased resistance to corrosion and pitting. The corrosion properties are more or less comparable with the material 1.4401/316. The stainless steel also has good resistance to most acids – except for hydrochloric acid and sulfuric acid – even in large concentrations and high temperatures.

In comparison to steel types which are not stabilised with titanium, 1.4571 is more resistant to intercrystalline corrosion. The addition of titanium prevents precipitation of chromium carbides in the grain boundary during long-term heating in the temperature range of around 450-850 °C.

1.4571/316 Ti in use

The high resistance to corrosion makes the material ideal for areas that have frequent or constant contact with salt water. This includes, for example, shipbuilding, the chemical industry, and apparatus and pipeline construction. The material is also used in the food industry as well as in the medical and pharmaceutical industries.

Furthermore, 1.4571/316Ti is used in machining. Similar to the 1.4541/321/321H material, only well-ground tools are to be used.

Assignment to current and older standards

  • Designation according to DIN: X 6 Cr Ni Mo Ti 17-12-2
  • ASTM grade: 316 Ti
  • EN: 1.4571
  • ASME: 316 Ti
  • AFNOR: X6CrNiMoTi 17-12-2
  • DIN: 1.4571
  • SIS: 2350

Chemical composition reference analysis (as weight %)

Grade Amount %
C ≤ 0,08
P < 0,045
S ≤ 1,0
Si 0,7
Mn ≤ 2,0
Cr 16,5 – 18,5
Mo 2 – 2,25
Ni 10,5 – 13,5
N ≤ 0,8

Mechanical values at room temperature

Tensile strength N/mm² 500 – 730
Tensile yield point Rp 0,2 N/mm² ≥ 190
Elongation at break A5 % 35

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