316Ti Stainless Steel (1.4571)

Titanium-stabilised alloy for long-term strength and corrosion resistance in high-heat, high-risk environments.

316Ti Stainless Steel

316Ti stainless steel (1.4571) is a high-performance variant of the 316 family, specifically engineered for high-temperature environments where structural stability and resistance to intergranular corrosion are critical. The alloy is stabilised with titanium, a deliberate addition that binds with carbon to prevent carbide precipitation during welding or prolonged thermal exposure.

This makes 316Ti especially suitable for welded pressure vessels, heat exchanger systems, and chemical process equipment operating above 500°C. The presence of molybdenum further enhances its ability to resist chloride-induced corrosion and pitting, while its austenitic structure ensures reliable strength and formability for complex fabricated parts.

Whether used in marine environments, high-temperature reactors, or hygienic food-grade systems, 316Ti delivers extended service life and reduced risk of failure under cyclic thermal and chemical stress.

AVAILABLE FORMS

Intamet offers 316 Ti in a wide range of forms, including the below:

Tubes & Pipes

Hollow Sections

Fitting & Flanges

Round Bars

Sheet & Plate

Angles

Special Sections

Flat Bars

Hollow Bars

FAQs: 316Ti Stainless Steel

What are the Mechanical Properties of 316Ti Stainless Steel?

316Ti combines the strength and formability of the 316 grade with titanium stabilisation for improved resistance to high-temperature degradation and sensitisation.

Tensile Strength: 515–690 MPa (75,000–100,000 psi) - Suitable for load-bearing and pressure-critical structures.

Yield Strength (0.2%): 205–450 MPa (30,000–65,000 psi) - Withstands permanent deformation in high-pressure and welded assemblies.

Elongation: 40–50% - Provides ductility for formed and welded components.

Hardness: Rockwell B95 max - Balanced machinability and surface durability.

Modulus of Elasticity: 193 GPa (28 × 10⁶ psi) - Maintains stiffness in structural applications exposed to heat.

Poisson’s Ratio: 0.29 - Ensures predictable elastic behaviour during stress and strain cycles.

The titanium addition improves creep resistance and high-temperature strength, making 316Ti a preferred option for thermal processing systems and high-integrity welded fabrications.

What are the Physical Properties of 316Ti Stainless Steel?

The physical characteristics of 316Ti stainless steel support long-term performance in thermal and chemically active environments.

Density: 8.03 g/cm³ - Enables structural use in heavy-duty, submerged, or pressurised systems.

Melting Point: 1399–1454 °C (2550–2650 °F) - Handles high-temperature processing without compromising form or function.

Thermal Conductivity: 16.3 W/m·K - Facilitates heat transfer in reactor shells and heat exchanger tubing.

Thermal Expansion: ~16 × 10⁻⁶/K - Maintains dimensional reliability across thermal cycling.

Specific Heat Capacity: ~500 J/kg·K - Absorbs thermal load without rapid overheating.

Modulus of Elasticity: 193 GPa - Retains rigidity under thermal and structural stress.

These values make 316Ti suitable for high-temperature pipework, pressure vessels, and industrial process equipment in corrosive and thermal-intensive environments.

Are there Variants of 316Ti Stainless Steel?

The 316 family includes several variants designed to meet specific fabrication, mechanical, and environmental challenges:

316L: Low-carbon for excellent weldability and resistance to intergranular corrosion.

316H: Higher carbon grade for added strength and creep resistance at elevated temperatures.

316LN: Strengthened with nitrogen for pressure-critical or cryogenic applications.

316F: Free-machining grade for complex, precision components.

316L Mod: Chemically refined for better machinability in technical applications.

316L-Si: Improved oxidation resistance with higher silicon content.

316L-Mo / 316L-Cu: Modified for superior pitting and stress corrosion cracking resistance in specific industrial processes.

Each variant allows specifiers and engineers to match alloy properties with the exact environmental and structural demands of the application.

What is the Chemical Composition of 316Ti Stainless Steel?

The alloying profile of 316Ti (1.4571) ensures thermal resilience and enhanced corrosion stability in welded and elevated-temperature applications.

Typical Composition (%):

Carbon (C): ≤ 0.08
Balanced for strength while avoiding carbide formation.

Manganese (Mn): ≤ 2.00
Supports hot working and strength retention.

Silicon (Si): ≤ 1.00
Improves oxidation resistance during heat exposure.

Phosphorus (P): ≤ 0.045
Controlled to protect mechanical integrity.

Sulfur (S): ≤ 0.030
Sometimes used to improve machinability.

Chromium (Cr): 16.0–18.0
Delivers foundational corrosion resistance.

Nickel (Ni): 10.0–14.0
Enhances ductility and resistance to stress corrosion.

Molybdenum (Mo): 2.0–3.0
Crucial for pitting resistance in chloride environments.

Titanium (Ti): 0.5–0.7
Prevents intergranular corrosion during welding and high-heat service.

Nitrogen (N): ≤ 0.10
Contributes to strength and austenitic stability.

Iron (Fe): Balance
Forms the alloy’s structural base.

The stabilising role of titanium is essential in maintaining corrosion resistance over long exposure periods, especially in fabricated or thermally cycled components.

Where is 316Ti Stainless Steel Used?

316Ti stainless steel is frequently specified for equipment exposed to a combination of heat, stress, and corrosive chemicals. Its ability to withstand long-term high-temperature service makes it ideal for:

Thermal Equipment: Heat exchangers, superheaters, furnace parts, and expansion joints exposed to oxidising conditions.

Chemical & Petrochemical Processing: Reactor tanks, pipe systems, evaporators, and pumps handling aggressive media.

Marine Environments: Underwater piping, flanges, and structural elements in brine or salt spray conditions.

Food & Pharmaceutical Systems: Equipment requiring both hygiene and temperature tolerance, including pressure vessels and sterilisation units.

Welded Assemblies: Ideal for tanks, tube bundles, and structural components where resistance to sensitisation is critical.

It’s also used in the production of stainless steel tubes, round bars, hollow bars, and flat bars, especially where welded joints must retain corrosion protection over time.

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316Ti Stainless Steel (1.4571)