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Published: November 10, 2025 | Updated: November 10, 2025By Gangsteel Engineering Team – 25+ Years in Stainless Steel Export Excellence
In the specialized domain of stainless steels compliant with ASTM A240/A240M and ASME SA240/SA240M standards, 316Ti emerges as a titanium-stabilized austenitic grade whose AISI specifications are critical for ensuring high-temperature stability and corrosion resistance in demanding applications.
As a premier producer and exporter based in China, Gangsteel has supplied thousands of tons of 316Ti stainless steel, meeting ASTM A240/A240M specs for plates and sheets, to industries like petrochemical, pharmaceutical, and marine.
If you're referencing AISI grade specs for 316Ti under ASME SA240/SA240M for a welded reactor or heat exchanger where composition, mechanicals, and tolerances are key, understanding its details is essential. This article provides a comprehensive AISI grade specs overview for 316Ti, including chemical, mechanical, and physical data, based on ASTM A240/A240M and ASME SA240/SA240M standards and our mill tests.
From our production lines, we've seen 316Ti's specs in action: In a 2024 European chemical reactor build, our 316Ti plates under ASTM A240 /A240M met AISI requirements for IGC resistance at 600°C, enabling full compliance without revisions, as per client audits. Compliant with ASME SA240/SA240M for pressure apps, 316Ti's density of 8.00 g/cm³ supports precise specs. Let's delve into the specifications, from composition to testing, to equip you for informed use.
316Ti stainless steel (AISI 316Ti or UNS S31635), compliant with ASTM A240/A240M and ASME SA240/SA240M, features chemical composition with C 0.08 max, Cr 16-18%, Mo 2-3%, Ni 10-14%, Ti 0.70 max; mechanicals tensile 515 MPa min, yield 205 MPa min, elongation 40% min; physical density 8.00 g/cm³, PREN 23-28. AISI specs emphasize Ti for IGC resistance at 425-815°C. Tolerances: thickness ±0.13mm for 3-5mm. Equivalent to EN 1.4571; ideal for chemical reactors. Gangsteel stocks 1-200mm with AISI certs.
The chemical composition of 316Ti, as per AISI standards aligned with ASTM A240/A240M and ASME SA240/SA240M, is tightly controlled for stabilization, with titanium ensuring resistance to carbide precipitation.
|
Element |
% Range or Max |
Role in AISI Specs |
|---|---|---|
|
Carbon (C) |
0.08 max |
Max limit to minimize carbides; Ti binds excess. |
|
Manganese (Mn) |
2.00 max |
Max for deoxidation; no min in AISI specs. |
|
Silicon (Si) |
0.75 max |
Max for oxidation; aids AISI compliance. |
|
Phosphorus (P) |
0.045 max |
Strict max for ductility in specs. |
|
Sulfur (S) |
0.030 max |
Max to avoid hot shortness. |
|
Chromium (Cr) |
16.00-18.00 |
Range for passivation per AISI. |
|
Molybdenum (Mo) |
2.00-3.00 |
Range for pitting; key AISI feature. |
|
Nickel (Ni) |
10.00-14.00 |
Range for austenite stability. |
|
Titanium (Ti) |
5x(C+N) min, 0.70 max |
Min/max for stabilization; AISI hallmark. |
|
Nitrogen (N) |
0.10 max |
Max for strength control. |
|
Iron (Fe) |
Balance |
Base; implied in AISI. |
AISI specs require heat analysis certs; Gangsteel's exceed with low P/S.
For uns stainless steel plates, AISI specs match.
316Ti's mechanical properties, per AISI specs aligned with ASTM A240/A240M and ASME SA240/SA240M, are tested for compliance.
|
Property |
Minimum Value |
Test Method |
AISI Notes |
|---|---|---|---|
|
Tensile Strength (MPa) |
515 |
ASTM E8 |
For all thicknesses. |
|
Yield Strength (MPa) |
205 |
ASTM E8 |
0.2% offset. |
|
Elongation (%) |
40 |
ASTM E8 |
In 50mm gauge. |
|
Reduction of Area (%) |
Not specified |
- |
Optional in AISI. |
|
Hardness (HRB max) |
95 |
ASTM E18 |
Annealed condition. |
|
Brinell (HB max) |
217 |
ASTM E10 |
Converted from HRB. |
|
Impact (Charpy J) |
Not req. |
ASTM A370 |
Optional for low-temp. |
AISI specs tension tests per bar; Gangsteel's meet with data.
For SA240 Type 316Ti, AISI specs detailed.
Physical properties of 316Ti, compliant with AISI specs aligned with ASTM A240/A240M and ASME SA240/SA240M, aid design calcs.
|
Property |
Value |
AISI Specs Notes |
|---|---|---|
|
Density (g/cm³) |
8.00 |
For weight under AISI. |
|
Melting Range (°C) |
1370-1400 |
High-temp limit guide. |
|
Thermal Conductivity (W/m·K) |
14.6 (at 100°C) |
For heat apps specs. |
|
Specific Heat (J/kg·K) |
500 |
Energy calcs. |
|
Thermal Expansion (10^-6 /°C) |
16.5 (20-100°C) |
Distortion control. |
|
Modulus (GPa) |
193 |
Stiffness per specs. |
|
Electrical Resistivity (μΩ·cm) |
74 |
Non-conductive uses. |
AISI specs imply these for design.
316Ti's corrosion resistance, per AISI specs aligned with ASTM A240/A240M and ASME SA240/SA240M, is enhanced by Ti for IGC.
AISI specs optional corrosion tests like A262.
316Ti is highly weldable per AISI specs aligned with ASTM A240/A240M, with Ti preventing sensitization. Fillers ER316L.
Gangsteel's 316Ti SA240 Type 316Ti fab without issues.
316Ti's AISI specs suit chemical reactors (IGC resistance), marine piping (pitting), per A240.
In Gangsteel's supply to U.S. offshore, AISI 316Ti performed without failure.
Equivalents: EN 1.4571 (similar specs). For A240 GR 316Ti, AISI matches.
Gangsteel stocks AISI 316Ti at $3,200-3,800/ton FOB. 1-200mm thick, full specs sheets. Contact for PDF.
Q: What are the AISI grade specifications for 316Ti stainless steel?
A: AISI 316Ti (UNS S31635) specifications include C 0.08 max, Cr 16-18%, Mo 2-3%, Ni 10-14%, Ti 0.70 max, Mn 2 max, Si 0.75 max, P 0.045 max, S 0.03 max, Fe balance, with tensile 515 MPa min and yield 205 MPa min.
Q: What is the chemical composition per AISI for 316Ti?
A: Per AISI, C 0.08 max, Cr 16-18%, Mo 2-3%, Ni 10-14%, Ti 0.70 max for stabilization, Mn 2 max, Si 0.75 max, P 0.045 max, S 0.03 max, N 0.10 max, Fe balance.
Q: What mechanical properties are required in AISI specs for 316Ti?
A: AISI specifications require tensile strength 515 MPa min, yield strength 205 MPa min, elongation 40% min, and hardness 95 HRB max for 316Ti in annealed condition.
Q: What tolerances are included in AISI grade specs for 316Ti?
A: AISI specs, aligned with ASTM A240, include thickness tolerances ±0.13mm for 3-5mm, width ±10mm, length ±15mm, and flatness 3mm/m max for 316Ti plates and sheets.
Q: What is the density of 316Ti per AISI specifications?
A: The density of 316Ti is 8.00 g/cm³ as per AISI specifications, consistent for strength and weight calculations in design.
Q: What is the hardness of 316Ti in AISI grade specs?
A: Maximum hardness is 95 HRB or 217 HB in annealed condition per AISI specifications for 316Ti.
Q: What is the yield strength of 316Ti stainless steel per AISI?
A: Minimum yield strength is 205 MPa per AISI specifications for 316Ti, providing excellent deformation resistance for structural applications.
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