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Published: November 8, 2025 | Updated: November 8, 2025By Gangsteel Engineering Team – 25+ Years in Stainless Steel Export Excellence
316Ti stainless steel, designated as UNS S31635 in the Unified Numbering System, EN 1.4571 in European standards, JIS SUS316Ti in Japanese specs, and AISI 316Ti in American nomenclature, is a titanium-stabilized austenitic grade renowned for its corrosion resistance and high-temperature stability.
As a premier producer and exporter based in China, Gangsteel has supplied thousands of tons of ASME SA240 316Ti and ASTM A240 316Ti plates, sheets, and bars to global industries including petrochemical, pharmaceutical, and marine.
If you're specifying this material for a welded structure or high-heat component, understanding its composition and specs is crucial. This detailed guide covers the chemical composition, UNS S31635 specifications, properties, and comparisons, based on industry standards and our mill data.
From our facilities, we've optimized 316Ti for demanding apps: In a 2024 Australian chemical line, our ASME SA240 Type 316Ti plates maintained specs under acidic heat, with composition ensuring no IGC, as per client audits. Often referenced under ASTM A240 /A240M for general use or ASME SA240/SA240M for pressure vessels, UNS S31635's specs make it a versatile upgrade. Let's explore its composition and specs in detail.
316Ti stainless steel (UNS S31635, EN 1.4571, JIS SUS316Ti, AISI 316Ti) has a composition with C 0.08 max, Cr 16-18%, Mo 2-3%, Ni 10-14%, and Ti 0.70 max for stabilization against IGC. Under specs like ASME SA240 316Ti and ASTM A240 316Ti, it offers tensile 515 MPa min, yield 205 MPa min, elongation 40% min, hardness 95 HRB max, and density 8.00 g/cm³. Compared to 316L, it provides better high-temp durability. Equivalents include DIN 1.4571 and GB 0Cr18Ni12Mo2Ti. Gangsteel stocks 1-200mm thick with full certs for global compliance.
The chemical composition of 316Ti stainless steel is engineered to provide enhanced resistance to intergranular corrosion through titanium stabilization, while maintaining the molybdenum-boosted pitting resistance of the 316 family. This makes UNS S31635 ideal for environments where welding or high temperatures could otherwise cause sensitization.
Standard chemical composition for UNS S31635 (per ASTM A240, ASME SA240, EN 1.4571, JIS SUS316Ti, AISI 316Ti; % by weight, heat analysis):
|
Element |
% Range or Max |
Role in Specs & Properties |
|---|---|---|
|
Carbon (C) |
0.08 max |
Controlled to minimize carbide formation; titanium binds excess for IGC resistance. |
|
Manganese (Mn) |
2.00 max |
Deoxidizer; aids strength and formability without affecting corrosion specs. |
|
Silicon (Si) |
0.75 max |
Improves oxidation resistance; limited for high-temp specs. |
|
Phosphorus (P) |
0.045 max |
Impurity cap to maintain ductility per A240 specs. |
|
Sulfur (S) |
0.030 max |
Kept low for weldability and corrosion per ASME SA240. |
|
Chromium (Cr) |
16.00-18.00 |
Provides passivation; core for PREN 23-28 in UNS S31635 specs. |
|
Molybdenum (Mo) |
2.00-3.00 |
Enhances pitting resistance; key for chloride specs in JIS SUS316Ti. |
|
Nickel (Ni) |
10.00-14.00 |
Stabilizes austenite; boosts general durability in AISI 316Ti. |
|
Titanium (Ti) |
5x(C+N) min, 0.70 max |
Stabilizer against sensitization; defines EN 1.4571 specs for high-temp use. |
|
Nitrogen (N) |
0.10 max |
Strengthens matrix; included in Ti calc for specs. |
|
Iron (Fe) |
Balance |
Base element; consistent across all standards. |
This composition ensures compliance with UNS S31635 specs, with titanium (typically 0.4-0.7%) preventing Cr depletion at 425-815°C. Compared to 316L's low C (0.03 max), 316Ti allows higher C while maintaining stability, per ASTM A240 requirements.
Gangsteel's melts optimize Ti for max effectiveness, with full certs for ASME SA240 316Ti and equivalents.
UNS S31635's mechanical specs are designed for demanding apps, with titanium ensuring properties hold at high temps.
Key mechanical properties (annealed, per ASTM A240, ASME SA240, EN 1.4571, JIS SUS316Ti, AISI 316Ti):
|
Property |
Minimum Value |
Typical Range |
Notes on Specs |
|---|---|---|---|
|
Tensile Strength (MPa) |
515 |
550-700 |
Meets A240 specs; stable at heat due to Ti. |
|
Yield Strength (0.2% Offset, MPa) |
205 |
220-300 |
ASME SA240 min; good creep per EN specs. |
|
Elongation (%) |
40 |
45-55 |
High for forming per JIS SUS316Ti. |
|
Reduction of Area (%) |
Not specified |
50-60 |
Indicates toughness in AISI 316Ti. |
|
Hardness (HRB max) |
95 |
80-90 |
Low per A240 for machinability. |
|
Brinell Hardness (HB max) |
217 |
160-190 |
Converted; meets EN 1.4571 specs. |
|
Charpy V-Notch Impact (J at RT) |
Not required |
100+ |
High; maintains in heat per specs. |
Specs ensure 316Ti performs well up to 815°C, with yield retention >70%. Gangsteel's stock exceeds mins, with elongation up to 55%.
For SA240 Type 316Ti, it's optimized for pressure.
Physical specs for UNS S31635 are stable, supporting its use in diverse environments.
|
Property |
Value |
Notes on Specs |
|---|---|---|
|
Density (g/cm³) |
8.00 |
Consistent per A240, EN 1.4571, JIS. |
|
Melting Range (°C) |
1370-1400 |
High for thermal specs in ASME SA240. |
|
Thermal Conductivity (W/m·K at 100°C) |
14.6 |
Meets AISI 316Ti heat transfer needs. |
|
Specific Heat (J/kg·K) |
500 |
Efficient per JIS SUS316Ti. |
|
Thermal Expansion (10^-6 /°C, 20-100°C) |
16.5 |
Low per EN specs for stability. |
|
Modulus (GPa) |
193 |
High for structural specs. |
These align across UNS S31635 specs, with density aiding calcs (80 kg/m² for 10mm plate).
For UNS stainless steel plates, 316Ti offers reliable data.
UNS S31635's composition provides excellent resistance, with Ti preventing IGC and Mo boosting pitting (PREN 23-28).
Gangsteel's composition ensures specs compliance.
UNS S31635 welds easily, with Ti eliminating annealing; meets A240 specs. Machinability ~60% of carbon steel.
Gangsteel's A240 GR 316Ti fabricates without issues.
UNS S31635 specs suit chemical reactors (A240), food equipment (AISI), marine piping (EN).
In Gangsteel's supply, it met JIS specs for pharma.
Equivalents: EN 1.4571, JIS SUS316Ti—matching specs.
Gangsteel stocks UNS S31635 at $3,200-3,800/ton FOB. 1-200mm thick, full specs certs. Contact for details.
Q: What is the chemical composition of 316Ti stainless steel?
A: 316Ti (ASME SA240 316Ti, ASTM A240 316Ti, EN 1.4571, JIS SUS316Ti, AISI 316Ti) composition: C 0.08 max, Mn 2.00 max, Si 0.75 max, P 0.045 max, S 0.030 max, Cr 16-18, Mo 2-3, Ni 10-14, Ti 0.70 max, N 0.10 max, Fe balance. Ti stabilizes for high-temp specs.
Q: What are the specs for UNS S31635 stainless steel?
A: UNS S31635 (ASME SA240 316Ti, ASTM A240 316Ti, EN 1.4571, JIS SUS316Ti, AISI 316Ti) specs include tensile 515 MPa min, yield 205 MPa min, elongation 40% min, hardness 95 HRB max, density 8.00 g/cm³.
Q: What is the density of UNS S31635 stainless steel?
A: The density of UNS S31635 (ASME SA240 316Ti, ASTM A240 316Ti, EN 1.4571, JIS SUS316Ti, AISI 316Ti) is 8.00 g/cm³, consistent across specs for weight calcs.
Q: What is the hardness of UNS S31635 stainless steel?
A: The maximum hardness of UNS S31635 (ASME SA240 316Ti, ASTM A240 316Ti, EN 1.4571, JIS SUS316Ti, AISI 316Ti) is 95 HRB or 217 HB, per annealed specs for machinability.
Q: What is the yield strength of UNS S31635 stainless steel?
A: The minimum yield strength of UNS S31635 (ASME SA240 316Ti, ASTM A240 316Ti, EN 1.4571, JIS SUS316Ti, AISI 316Ti) is 205 MPa, with typical 220-300 MPa per specs.
Q: What is the tensile strength of UNS S31635 stainless steel?
A: The minimum tensile strength of UNS S31635 (ASME SA240 316Ti, ASTM A240 316Ti, EN 1.4571, JIS SUS316Ti, AISI 316Ti) is 515 MPa, with typical 550-700 MPa per specs.
Q: What is the impact toughness of UNS S31635 stainless steel?
A: UNS S31635 (ASME SA240 316Ti, ASTM A240 316Ti, EN 1.4571, JIS SUS316Ti, AISI 316Ti) has impact toughness ~100 J at room temp, maintaining high values per specs for cryogenic use.
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