Stainless Steel 316 Ti

Type 316Ti is a titanium-stabilized version of 316 stainless steel, specifically designed for applications where exposure to high temperatures can lead to sensitization and chromium carbide precipitation. Thanks to the addition of titanium, this alloy is ideal for use in environments with operating temperatures between 427°C and 816°C (800°F–1500°F).
In addition, 316Ti provides improved resistance to oxidizing acids and chloride-containing environments. Its mechanical properties and corrosion resistance are comparable to those of 316 alloy, but with enhanced performance in thermally and chemically demanding applications.

Corrosion resistance

Due to its molybdenum content, 316Ti exhibits increased resistance to atmospheric corrosion and aggressive chemical substances, including:

• Sulfuric acid
• Hydrochloric acid
• Acetic and formic acids
• Alkaline chlorides and acidic sulfates

It is also particularly effective in applications where sulfurous gas condensation would severely affect other types of stainless steel.
However, it should be noted that molybdenum-bearing alloys, including 316Ti, are less resistant to strong oxidizing acids such as nitric acid.

Physical Properties of 316Ti Stainless Steel:

• Melting range: 1371 – 1421°C (2500 – 2590°F)
• Density: 7.99 g/cm³
• Specific gravity: 7.98Specific gravity: 7.98
• Elastic modulus: 193 GPa

Mechanical Properties of 316Ti Stainless Steel:

Welding

316Ti is easily weldable, with no risk of hot or cold cracking. Therefore, it can be welded using any standard method, including filler metal processes — preferably with a ferrite content of 5–15%.
To maintain titanium stabilization, it is recommended to use inert gas shielding and avoid contamination with carbon or nitrogen from external sources (such as oils, air, etc.).

Heat Treatment

This alloy cannot be hardened by conventional heat treatment, but:

• Stress relief annealing or ductility optimization is possible.
• The recommended annealing range is 900–1100°C (1650–2010°F), followed by rapid cooling.