STS316Ti – Titanium-Stabilized Molybdenum Steel: Welded Chloride Corrosion Resistor

Overview

STS316Ti is a titanium-stabilized austenitic stainless steel, developed based on STS316 with the addition of 0.20-0.70% titanium to enhance intergranular corrosion resistance. It retains the 2.00-3.00% molybdenum content of STS316, ensuring superior pitting and crevice corrosion resistance in chloride-containing media. Composed of 16.00-18.00% chromium and 10.00-14.00% nickel, it forms a stable austenitic structure that is non-magnetic in the annealed state. The titanium addition forms stable titanium carbides, preventing chromium depletion during welding and high-temperature service (450-850°C). This grade is widely used in welded structures requiring both chloride corrosion resistance and intergranular corrosion protection.

Chemical Composition (wt%)

C ≤ 0.08, Si ≤ 1.00, Mn ≤ 2.00, P ≤ 0.045, S ≤ 0.030, Cr: 16.00-18.00, Ni: 10.00-14.00, Mo: 2.00-3.00, Ti: 0.20-0.70

Typical Mechanical Properties (Annealed Condition)

Tensile Strength (Rm): ≥ 520 MPa; Yield Strength (Rp0.2): ≥ 205 MPa; Elongation (A): ≥ 40%; Brinell Hardness (HB): ≤ 187

Core Advantages

Titanium stabilization prevents intergranular corrosion in welded joints; molybdenum ensures superior chloride corrosion resistance; non-magnetic and highly ductile; easy to weld with no post-weld heat treatment; ideal for welded structures in corrosive environments.

Applications

Chemical processing pipelines, marine equipment, food and pharmaceutical processing machinery, seawater treatment systems, and welded structural parts in corrosive environments.

Equivalent Grades

AISI 316Ti, UNS S31630, 1.4571, SUS316Ti, GB 06Cr17Ni12Mo2Ti

Stainless Steel Suppliers

If you have project requirements for stainless steel, we welcome your order. GNEE has a large inventory of popular products for you to choose from. It can be processed into various practical product forms, including plates, coils, tubes, bars, wires, etc. For detailed chemical composition information and free samples, please contact our factory immediately. We offer competitive prices and excellent service.Email: info@gneestainless.com

 

Testing and Documentation: Factory test certificate, EN 10204 3.1, chemical report, mechanical report, destructive testing report, non-destructive testing report, PMI test report, visual inspection report, third-party inspection report, NABL certified laboratory report.
Packaging: Wooden crate packaging, bubble wrap packaging, steel strapping, or packaging according to customer requirements.