Grade 316Ti Stainless Steel Valves are a stabilized variation of grade 316 stainless steel and are suggested for applications requiring higher temperatures. It is austenitic chromium-nickel stainless steel.
Grade 316Ti Stainless Steel Valves are prone to the formation of carbides at elevated temperatures and can result in intragranular corrosion. Grade 316Ti is characterized by the presence of titanium in small amounts. Its content is around 0.5% in the composition. Titanium stabilizes the microstructure at high temperatures. It eradicates carbide precipitation and prevents corrosion at elevated temperatures. During the heat treatment, titanium bonds with carbon to form titanium carbide. It prevents the formation of chromium carbides. Hence, 316Ti can be used for a longer duration at higher temperatures.
It also contains molybdenum and provides corrosion resistance in pitting from chloride. 316Ti has similar physical and mechanical properties to grade 316. It features good tensile strength and stress rupture at higher temperatures.
It also shows resistance to acids like sulfuric acids, hydrochloric acid, and sulfates.
Grade 316Ti should be used for the applications required for elevated temperatures. 316Ti can be exposed to a higher temperature for a longer duration without the risk of the occurrence of precipitation.
Grade 316Ti is commonly used in the oil and gas industry, chemical processes, heat exchangers, marine environments, automation, and paper mill equipment
Chemical composition
Grade 316 is characterized by the presence of molybdenum with other stainless steel elements.
316L has the same composition as grade 316; only differs by the content of carbon. It is a low-carbon version.
316Ti is stabilized titanium grade with the presence of molybdenum and other elements.
Physical Characteristics
- The metric density of grade 316 is 8.0 g/cm3.
- 193Gpa is the elasticity modulus.
- At 20°C, the electrical resistance is 74 Microhm-cm.
- 1400°C is the melting point
- thermal attributes
- At 1-100°C and 538°C, the thermal expansion coefficient is 15.9 m/m and 17.5 m/m, respectively.
- At 100°C and 500°C, thermal conductivity is 16.3 W/mK and 21.5 W/mK, respectively.
Technical characteristics
- The tensile strength of grade 316 is 500 Mpa, while the yield strength is 205 Mpa. Maximum hardness is 215 HB. In 50mm, elongation is 40%
- The tensile strength of grade 316L is 485 MPa, and the yield strength is 170 MPa. Maximum hardness is 217 HB. In 50mm, elongation is 40%.
- The tensile strength of grade 316Ti is 515 MPa, and the yield strength is 205 MPa. In 50mm, elongation is 35%.
Heat treatment
Annealing: By first raising the temperature of grade 316 to between 1010 and 1121 °C, then rapidly lowering it, it can be annealed.
Heat treatment cannot harden grade 316. It can be cold-worked to harden it. Stainless steel 316 is easily formable, and cold working processes can increase its toughness and strength.
Corrosion Resistance
Grade 316Ti Stainless Steel Valves are made to offer exceptional corrosion resistance in environments that are corrosive to chloride. It is commonly referred to as marine grade.
When exposed to high levels of chlorine in freshwater, grade 316 stainless steel resists corrosion. For providing outstanding corrosion resistance in marine conditions, it is renowned.
Corrosion resistance comparable to grade 316 stainless steel is demonstrated by grades 316L and 316Ti.
Welding
Fusion welding can be done both with and without fillers. For welding, grade 316 and grade 316L electrodes are advised.
Heavy pieces of grade 316 can be welded together using grade 316Ti. For hefty parts, post-weld treatment can be necessary.
