AISI 316Ti (alternative names: S31635, 1.4571) is Cr-Ni-Mo austenitic stainless steel derivative of AISI 316. The difference lies in the addition of titanium to the alloy which guarantees that AISI 316Ti is stabilized and able to resist intergranular corrosion at temperatures between 426 and 815 °C, even for extended periods. This means that AISI 316Ti is suitable for welding without the loss of corrosion resistance. Titanium also increases mechanical strength, especially at temperatures above 800 °C.
AISI 316Ti has similar properties to AISI 316 as well as its other derivative, AISI 316L (1.4404). The addition of molybdenum provides these 316 alloys with excellent corrosion resistance, especially in chloride environments.
AISI 316Ti (and the other 316 alloys) are certified for use in the food industry due to their low reactivity and resistance to various aggressive substances including salt (water) and acids.
These alternative alloys of AISI 316 have both been developed with the aim of making them better suited to welding by maximizing their intergranular corrosion resistance. The main difference lies in the way this is achieved. In AISI 316Ti, titanium is added for this purpose, while in AISI 316L, carbon is reduced to a maximum of 0,03% (the ‘L’ stands for low carbon). AISI 316L is a more recent development using new technologies that allow for the removal of carbon.
In most situations these two alloys are interchangeable, as they have almost identical characteristics. There are however a few notable differences:
|Carbon (C) max:||0.08|
|Manganese (Mn) max:||2.00|
|Phosphorus (P) max:||0.045|
|Sulfur (S) max:||0.030|
|Silicon (Si) max:||0.75|
|Yield Strength||205 MPa|
|Tensile Strength||515 MPa|
|Density||7.9 g/cm3, 7900 kg/m3|
|Melting point||1375 °C|
|Expansion coefficient||16.5 10-6m (20 – 100°C)|
Customers buying AISI 316Ti sheath material are mostly from the food and beverage industry. However, this sheath is also widely used in other areas, including:
Kamet supplies AISI 316Ti as sheath material for thermocouple and mineral insulated (MI) cable. Contact our experts to answer any queries you might have.
For a short overview and explanation of our other sheath materials, please also consult our knowledge base.