AISI 316Ti Titanium-Stabilized Stainless Steel (UNS S31635)
ASTM A240/A276 · Published: 2026-06-01 · Updated: 2026-06-02
AISI 316Ti (UNS S31635) is the titanium-stabilized version of 316, with titanium added at 5×(C+N) minimum to prevent chromium carbide precipitation during welding or elevated-temperature service. While 316L achieves the same goal through low...
AISI 316Ti (UNS S31635) is the titanium-stabilized version of 316, with titanium added at 5×(C+N) minimum to prevent chromium carbide precipitation during welding or elevated-temperature service. While 316L achieves the same goal through low carbon content, 316Ti offers two advantages: superior high-temperature strength and creep resistance from the titanium carbonitrides, and the ability to be used at temperatures where 316L's low-carbon matrix would lose strength. Standard material for chemical plant pressure vessels operating at 400-550°C, pulp and paper digester heaters, and aircraft exhaust components. The stabilization also eliminates the risk of intergranular corrosion in the HAZ of heavy-section welds where 316L might sensitize despite low carbon.
Quick Facts
| Category | Stainless Steel |
| Standard | ASTM A240/A276 |
| Density | 8.00 g/cm³ |
| Yield Strength | 205 MPa (30 ksi) |
| Tensile Strength | 515 MPa (75 ksi) |
Global Equivalents & Cross-Reference
| Alternative Standard / Grade | Action |
|---|---|
| EN 1.4571 | Compare |
| X6CrNiMoTi17-12-2 | Compare |
| SUS316Ti | Compare |
| 06Cr17Ni12Mo2Ti | Compare |
Related Materials
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Frequently Asked Questions
316Ti vs 316L—which to choose?
For ambient and moderate-temperature (below 400°C) applications, 316L is more widely stocked and more economical—the low-carbon approach achieves the same weld sensitization resistance. Choose 316Ti when: operating temperature exceeds 400°C continuously, the component undergoes repeated welding and stress-relief cycles, or the application requires guaranteed intergranular corrosion resistance after post-weld heat treatment at sensitization temperatures (450-850°C).
References & International Standards
- ASTM International. Standard Specifications for Steel & Metal Alloys. astm.org
- International Organization for Standardization (ISO). Metallic Materials — Cross-Reference Database. iso.org
- American Iron and Steel Institute (AISI). Steel Grade Designations & Equivalents. steel.org
- European Committee for Standardization (CEN). EN Steel Standards & Numbering System. cencenelec.eu