Product Description

316Ti stainless steel (UNS S31635) is a titanium-stabilized version of 316 stainless steel with a chemical composition similar to 316L. The addition of a small amount of titanium effectively prevents chromium carbide precipitation during welding or high-temperature exposure. This characteristic significantly enhances the material's resistance to intergranular corrosion, enabling it to better retain its original properties in harsh environments.

Core Advantage: An Upgrade of 316, The "Corrosion Guardian" with Titanium Stabilization

316Ti is a high-performance alloy based on traditional 316 austenitic stainless steel, enhanced by the addition of Titanium (Ti) (Ti≥5×C%) for stabilization. This critical improvement achieves a qualitative leap in solving intergranular corrosion. When exposed to the sensitization temperature range of 425°C to 815°C, titanium preferentially combines with carbon, effectively preventing chromium depletion at grain boundaries. This endows the material with excellent resistance to intergranular corrosion.

We provide more than just steel pipes; we offer your long-term stability and safety in high-temperature and corrosive environments.

Why Choose 316Ti?

Inherent "Anti-Sensitization" Property: Compared to standard 316/316L, 316Ti maintains excellent corrosion resistance during welding or high-temperature service without the need for additional post-weld heat treatment. It is particularly suitable for thick-section components and processes involving multiple welds.

Superior Chloride Corrosion Resistance: Inheriting the advantage of Molybdenum (Mo) from the 316 alloy, 316Ti demonstrates significantly better resistance to pitting and crevice corrosion than 304 stainless steel in chloride-containing marine environments and acidic media (e.g., sulfuric acid concentrations below 15% and above 85%).

Excellent High-Temperature Mechanical Properties: The addition of titanium not only stabilizes the structure but also enhances the material's creep strength and stress-rupture strength at elevated temperatures. Under extreme conditions like those in PWR nuclear power plants, it forms a dense, chromium-nickel rich oxide film, ensuring sustained high-temperature corrosion resistance.

Broad Service Temperature Range: Suitable for a wide temperature spectrum from cryogenic conditions up to 816°C, performing reliably in aerospace, nuclear power, and chemical industries.

Key Application Areas

Petrochemical Industry: Used in heat exchangers, reactor piping, and process lines conveying corrosive media, especially where there is a risk of polythionic acid stress corrosion cracking.

Marine Engineering: Due to its excellent resistance to seawater corrosion, it is widely used in offshore platform hydraulic lines, desalination equipment, and marine heat exchangers.

Nuclear Power & Energy: As a critical material for PWR nuclear power plant primary piping, pressurizer bellows, and steam generators, it withstands long-term exposure to high-temperature, high-pressure water.

High-End Manufacturing: Applied in aerospace engine components, automotive sensor sheaths, and pharmaceutical/food processing equipment requiring high purity.

Technical Specifications

Why Choose Us?

Full Quality Control: Strict implementation of PMI testing, eddy current/ultrasonic inspection, and hydrostatic testing ensure precise chemical composition and zero internal defects for every pipe.

Stock & Customization: Regular inventory of 316Ti seamless pipes in various sizes, with services available for bright annealing, precision polishing, and non-standard lengths.

International Certification: Products comply with ASTM, DIN, JIS, and other international standards, exported globally and trusted by customers in the chemical and energy sectors.

Conclusion: Building on the excellent foundation of 316, 316Ti uses Titanium to achieve a complete defense against intergranular corrosion. If you need a material that ensures peace of mind in high-temperature processing and harsh media, 316Ti is your ideal choice. Contact us today for your tailored material solution!

Note: The main difference between 316Ti and 316L lies in the stabilizing element. 316Ti, containing titanium, is more suitable for service in the 425-815°C range or for thick-section welding applications, effectively avoiding post-weld sensitization. 316L, with its ultra-low carbon content, is more widely used in general strongly corrosive environments. Please select the appropriate grade based on your actual operating temperature