Material 316Ti – Data Sheet, Advantages, Hardening

Material number 316Ti (EN 1.4571) is an austenitic steel that exhibits good resistance to medium concentrations of chlorides and acids, owing to the titanium alloy that stabilizes it. However, this alloy also renders the material more expensively priced than comparable steels, and thus, it is commonly employed only for specialized applications, such as in the chemical industry. Its DIN EN designation is X6CrNiMoTi17-12-2.

chemical composition

316Ti is a stainless steel with an alloy of chromium, nickel, molybdenum and titanium. The material contains a low carbon content of less than 1% and has good ductility. The chemical composition ranges in the following dimensions:

≤ 0.08%≤ 1 %≤ 2 %≤ 0.045%≤ 0.03%16.5 – 18.5%2 – 2.5%≤ 0.11%10.5 – 13.5%≤ 0.7%

Difference to 1.4401

In terms of its chemical composition, 316Ti is comparable to 316 (1.4401), except for its titanium stabilization. The presence of the titanium alloy results in superior chemical resistance to salt, chlorides, and acids for 316Ti. Both material variants can withstand temperatures up to 500 °C and exhibit excellent corrosion resistance.

Advantages and properties

The material 316Ti is a V4A stainless steel, which impresses with its high corrosion resistance and stability against medium concentrations of salt, hydrochloric acids and chlorides. The steel can be used at temperatures between -110 °C and 500 °C, and is therefore also suitable for applications at low temperatures.

  • Corrosion resistance: As with all V4A stainless steels, corrosion resistance is very good. Even at high temperatures, the steel is protected against attack. It is classified in corrosion resistance class III. The material is also resistant to intergranular corrosion during welding.
    Mechanical properties: In terms of mechanical properties, material 316Ti is similar to material 1.4404, which can be classified as medium.
  • Magnetic properties: The steel is hardly ferromagnetic (magnetic properties: μr ≤ 1.3). Magnetizability is low, although it may increase with increasing cold working.
  • Chemical resistance: at low to medium concentrations of acids, 316Ti shows very good resistance. However, it is not suitable for long-term use in seawater because the salt concentration is too high. Pitting corrosion may occur if the material is damaged.
  • Machinability: Due to the titanium alloy, stainless steel 316Ti does not show good machinability values. Machining causes titanium carbonitrides to form, which can lead to premature wear. Therefore, carbide or HSS steel is recommended for machining.
  • Welding: The weldability of the material is very good. Since it contains only a small amount of carbon, heat treatment after welding is not necessary.

Fields of application

Stainless steel with titanium alloy is used in areas where high corrosion resistance is required. However, due to the high initial cost, it is usually used only in the following applications:

  • Chemical industry
  • Food industry
  • Construction industry
  • Textile industry
  • Pharmaceutical industry

Hardening of 316Ti steel

The material 316Ti is suitable for many applications due to its excellent corrosion resistance. Our BORINOX® hardening process can further increase the hardness of the material. In addition, resistance to abrasion, cold welding and cavitation is also significantly increased.

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