ASTM A182 F316Ti UNS S31635 1.4571 WN SO SW Blind flange forging disc ring

316Ti (UNS S31635) is a titanium stabilised version of 316 molybdenum-bearing austenitic stainless steel. The 316 alloys are more resistant to general corrosion and pitting/crevice corrosion than the conventional chromium-nickel austenitic stainless steels such as 304. They also offer higher creep, stress-rupture and tensile strength at elevated temperature. High carbon Alloy 316 stainless steel can be susceptible to sensitisation, the formation of grain boundary chromium carbides at temperatures between approximately 900 and 1500°F (425 to 815°C) which can result in intergranular corrosion. Resistance to sensitisation is achieved in Alloy 316Ti with titanium additions to stabilise the structure against chromium carbide precipitation, which is the source of sensitisation. This stabilisation is achieved by an intermediate temperature heat treatment, during which the titanium reacts with carbon to form titanium carbides. This significantly reduces susceptibility to sensitisation in service by limiting the formation of chromium carbides. Thus, the alloy can be used for extended periods at elevated temperatures without compromising its corrosion resistance. 316Ti has equvilent corrosion resistance to sensitisation as the low carbon version 316L.

Available tube product forms

• Straight
• Coiled
• Seamless
• Seam welded, cold redrawn and annealed

Typical Applications

• Chemical processes
• High temperature
• Automotive
• Control lines

Typical manufacturing specifications

• ASTM A213
• BS EN 10216 part 5
• Also individual customer specifications.

Industries predominantly using this grade

• Chemical processes
• Oil and Gas
• Automotive

TECHNICAL DATA

Mechanical Properties

Physical Properties (Room Temperature)

Chemical Composition (% by weight)