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Published: November 10, 2025 | Updated: November 10, 2025By Gangsteel Engineering Team – 25+ Years in Stainless Steel Export Excellence
In the demanding arena of stainless steels compliant with ASTM A240/A240M – 316Ti (UNS S31635), ASTM A182 – F316Ti, EN 10088-2/EN 10095 – X6CrNiMoTi17-12-2 (1.4571), GB/T 24511 (06Cr17Ni12Mo2Ti), and JIS G4303 (SUS316Ti), 316Ti emerges as a titanium-stabilized austenitic grade whose flanges and fittings are optimized for high-temperature and corrosive environments requiring secure, leak-proof connections.
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 used in flange and fitting production, to industries like offshore, petrochemical, and marine.
If you're sourcing 316Ti flanges and fittings under ASME SA240/SA240M for components like valve assemblies or piping systems where pressure, corrosion, and space are critical, understanding available types, specs, and properties is essential. This article explores 316Ti flanges and fittings options, specs, and insights, based on ASTM A240/A240M – 316Ti (UNS S31635), ASTM A182 – F316Ti, EN 10088-2/EN 10095 – X6CrNiMoTi17-12-2 (1.4571), GB/T 24511 (06Cr17Ni12Mo2Ti), and JIS G4303 (SUS316Ti) standards and our mill data.
From our production lines, we've seen 316Ti flanges and fittings in action: In a 2024 Norwegian offshore platform, our 316Ti weld neck flanges under ASTM A240 /A240M and ASTM A182 – F316Ti, equivalent to EN 10088-2/EN 10095 – X6CrNiMoTi17-12-2 (1.4571), GB/T 24511 (06Cr17Ni12Mo2Ti), and JIS G4303 (SUS316Ti), withstood 500°C H2S exposure without leakage, enhancing safety and longevity as per client pressure tests. Compliant with ASME SA240/SA240M for pressure apps, 316Ti's density of 8.00 g/cm³ supports lightweight yet robust designs. Let's delve into the options, from composition to stock, to guide your selection.
316Ti stainless steel flanges and fittings, compliant with ASTM A240/A240M – 316Ti (UNS S31635), ASTM A182 – F316Ti, EN 10088-2/EN 10095 – X6CrNiMoTi17-12-2 (1.4571), GB/T 24511 (06Cr17Ni12Mo2Ti), and JIS G4303 (SUS316Ti), offer types like weld neck, slip-on, blind, socket weld, threaded, and RTJ in sizes NPS 1/2-48, Class 150-2500, with tensile 515 MPa min and yield 205 MPa min for high-strength connections. Titanium stabilization ensures IGC resistance at 425-815°C, with density 8.00 g/cm³, PREN 23-28. Stock includes forged flanges per A182 F316Ti; priced $5,000-7,500/ton FOB 2025. Equivalent to EN 1.4571; superior to 316L in heat. Ideal for offshore piping; Gangsteel stocks with certs for custom needs.
The chemical composition of 316Ti, as per ASTM A240/A240M – 316Ti (UNS S31635), ASTM A182 – F316Ti, EN 10088-2/EN 10095 – X6CrNiMoTi17-12-2 (1.4571), GB/T 24511 (06Cr17Ni12Mo2Ti), and JIS G4303 (SUS316Ti), is tailored for flange and fitting durability, with titanium ensuring stability in corrosives.
|
Element |
% Range or Max |
Role in Flanges & Fittings |
|---|---|---|
|
Carbon (C) |
0.08 max |
Low for weldable flange joints. |
|
Manganese (Mn) |
2.00 max |
Aids formability in fitting hubs. |
|
Silicon (Si) |
0.75 max |
Improves oxidation for flange faces. |
|
Phosphorus (P) |
0.045 max |
Limited for fitting toughness. |
|
Sulfur (S) |
0.030 max |
Controlled for fitting machinability. |
|
Chromium (Cr) |
16.00-18.00 |
Enhances corrosion for marine flanges. |
|
Molybdenum (Mo) |
2.00-3.00 |
Boosts pitting in offshore fittings. |
|
Nickel (Ni) |
10.00-14.00 |
Stabilizes for fitting ductility. |
|
Titanium (Ti) |
5x(C+N) min, 0.70 max |
Stabilizes for high-temp flange apps. |
|
Nitrogen (N) |
0.10 max |
Strengthens for high-pressure fittings. |
|
Iron (Fe) |
Balance |
Base for robust flange stock. |
This composition under ASTM A240/A240M ensures flange and fitting stock meets mechanical specs.
Gangsteel's 316Ti meets ASME SA240/SA240M for certified use.
For uns stainless steel plates, flange blank stock available.
316Ti's mechanical properties, per ASTM A240/A240M and ASME SA240/SA240M, support flanges and fittings with robust performance.
|
Property |
Minimum Value |
Typical Range |
Notes for Flanges & Fittings |
|---|---|---|---|
|
Tensile Strength (MPa) |
515 |
550-700 |
High for Class 2500 flanges. |
|
Yield Strength (MPa) |
205 |
220-300 |
Good for NPS 24 pressure. |
|
Elongation (%) |
40 |
45-55 |
Ductility for fitting forming. |
|
Hardness (HRB max) |
95 |
80-90 |
Low for flange machining. |
|
Impact (Charpy J) |
Not req. |
100+ at RT |
Tough for fitting impact. |
SA240 specs ensure flange strength; Gangsteel's exceed for high-pressure.
For SA240 Type 316Ti, fitting options robust.
Physical properties of 316Ti, compliant with ASTM A240/A240M and ASME SA240/SA240M, aid flange and fitting designs.
|
Property |
Value |
Notes for Flanges & Fittings |
|---|---|---|
|
Density (g/cm³) |
8.00 |
Efficient for flange weight. |
|
Melting Range (°C) |
1370-1400 |
High for thermal fitting apps. |
|
Thermal Conductivity (W/m·K) |
14.6 (at 100°C) |
Good for heat-dissipating flanges. |
|
Specific Heat (J/kg·K) |
500 |
Efficient for fitting cycling. |
|
Thermal Expansion (10^-6 /°C) |
16.5 (20-100°C) |
Low distortion in flange joints. |
|
Modulus (GPa) |
193 |
Stiffness for secure fittings. |
|
Electrical Resistivity (μΩ·cm) |
74 |
Moderate for non-conductive flanges. |
These ensure flange efficiency.
316Ti's corrosion resistance, per ASTM A240/A240M and ASME SA240/SA240M, is ideal for flange and fitting apps in corrosives.
316Ti is highly weldable per ASTM A240/A240M, with Ti preventing sensitization in flange joints. Fillers ER316L.
Gangsteel's 316Ti SA240 Type 316Ti excels in flange fab.
316Ti flange and fitting options suit offshore platforms (pressure-tight), chemical modules (corrosion).
In Gangsteel's supply to U.S. offshore, 316Ti flanges endured without failure.
Equivalents: EN 1.4571 (similar flange options). For A240 GR 316Ti, options match.
Gangsteel stocks 316Ti flanges/fittings (NPS 1/2-48, Class 150-2500) at $5,000-7,500/ton FOB 2025. Custom, certs. Contact for options.
Q: What are the flange options for 316Ti stainless steel?
A: 316Ti flange options include weld neck, slip-on, blind, socket weld, threaded, and RTJ types in NPS 1/2-48, Class 150-2500, compliant with ASTM A182 F316Ti for forged flanges.
Q: What is the chemical composition of 316Ti for flanges and fittings?
A: For flanges and fittings, 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, N 0.10% max, Fe balance, ensuring high-strength corrosion resistance.
Q: What mechanical properties apply to 316Ti flanges and fittings?
A: Minimum tensile 515 MPa, yield 205 MPa, elongation 40%, hardness 95 HRB max for 316Ti flanges and fittings, providing robust performance in pressure and torque.
Q: What sizes are available in 316Ti flange and fitting stock?
A: 316Ti flange stock available in NPS 1/2-48 (DN 15-1200), Class 150-2500, with bore to match pipe and hub lengths per ANSI B16.5 for standard options.
Q: What is the density of 316Ti for flange and fitting stock?
A: Density is 8.00 g/cm³ for 316Ti flange and fitting stock, yielding ~50-500 kg per flange depending on size for weight calcs.
Q: What is the hardness of 316Ti flange and fitting stock?
A: Maximum hardness 95 HRB or 217 HB for 316Ti flange and fitting stock in annealed condition, soft for machining while maintaining strength.
Q: What is the yield strength of 316Ti for flanges and fittings?
A: Minimum yield strength 205 MPa for 316Ti flanges and fittings, with typical 220-300 MPa, providing excellent deformation resistance for high-pressure connections.
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