TP316Ti Stainless Steel Pipes & Tubes

Material Description UNS S31635 EN Number 1.4571 Chemical Composition, % C Mn P S Si Cr Ni Mo Ti .08 2.0 .045 .03 1.0 16.5-18.5 10.5-13.5 2.0-2.5 0.7 max TP316Ti is an austenitic, titanium-stabilized stainless chromium–nickel–molybdenum steel. Corrosion Resistance ● Organic acids at high concentrations and temperatures ● Inorganic acids, e.g. phosphoric and sulphuric acids, at moderate concentrations and temperatures. The steels can also be used in sulphuric acid of concentrations above 90% at low temperature. ● Salt solutions, e.g. sulphates, sulphides and sulphites

TP316Ti has better resistance to intergranular corrosion than unstabilised steels. The addition of titanium prevents precipitation of chromium carbides in the grain boundaries after prolonged heating in the temperature range 450- 850°C (840-1560°F).

Resistance to these types of corrosion improves with increasing molybdenum content and TP316Ti with Mo has substantially higher resistance than steels of type TP304/TP304L.

Austenitic stainless steels are susceptible to stress corrosion cracking. This may occur at temperatures above about 60°C (140°F), if the steel is subjected to tensile stresses and at the same time comes into contact with certain solutions, particularly those containing chlorides. Such service conditions should therefore be avoided. Conditions when plants are shut down must also be considered as the condensates which are then formed can develop a chloride content that leads to both stress corrosion cracking and pitting.

Application

Heat exchanger tubing, condenser tubing, pipelines, cooling and heating coils in the chemical, petrochemical and pulp and paper industries..

Seamless Tube Information

Specification: ASTM A-213 / ASME SA-213, ASTM A269 / ASME SA269, EN10216-5, DIN17458

Outside Diameter: 6.0-406 mm (1/4’’ – 16’’)

Wall Thickness: 0.5-35 mm (0.0196’’ – 1.378’’)

Length: Max.33000 mm (the maximum length is for the scope of special diameters and walls)

Other sizes are on the request