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Published: November 11, 2025 | Updated: November 11, 2025By Gangsteel Engineering Team – 25+ Years in Stainless Steel Export Excellence
In the precision-driven arena of stainless steels compliant with ASTM A240/A240M – 316Ti (UNS S31635), ASTM A312/A312M – TP316Ti, ASTM A213/A213M – TP316Ti, ASTM A249/A249M – TP316Ti, EN 10088-2/EN 10095 – X6CrNiMoTi17-12-2 (1.4571), GB/T 20878 – 06Cr17Ni12Mo2Ti, JIS G4303 – SUS316Ti, and BS EN 10088-2 – 1.4571 (316Ti), 316Ti emerges as a titanium-stabilized austenitic grade whose weldability guide is essential for achieving strong, corrosion-resistant joints in high-temperature and aggressive environments.
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, marine, and power generation.
If you're planning welding for 316Ti under ASME SA240/SA240M for a reactor vessel or exhaust piping where joint integrity, filler selection, and post-weld performance are essential, understanding the guide is vital. This article explores 316Ti's weldability guide, data, and insights, based on ASTM A240/A240M – 316Ti (UNS S31635), ASTM A312/A312M – TP316Ti, ASTM A213/A213M – TP316Ti, ASTM A249/A249M – TP316Ti, EN 10088-2/EN 10095 – X6CrNiMoTi17-12-2 (1.4571), GB/T 20878 – 06Cr17Ni12Mo2Ti, JIS G4303 – SUS316Ti, and BS EN 10088-2 – 1.4571 (316Ti) standards and our mill tests.
From our production lines, we've optimized weldability for 316Ti: In a 2024 U.S. chemical reactor fabrication, our 316Ti plates welded without PWHT under ASTM A240 /A240M showed no IGC after 1,000 hours at 150°C, enhancing joint durability as per client tensile tests. Compliant with ASME SA240/SA240M for pressure apps, 316Ti's density of 8.00 g/cm³ supports efficient welding. Let's delve into the guide, from composition to techniques, to equip you for successful welds.
316Ti stainless steel weldability guide, compliant with ASTM A240/A240M – 316Ti (UNS S31635), ASTM A312/A312M – TP316Ti, ASTM A213/A213M – TP316Ti, ASTM A249/A249M – TP316Ti, EN 10088-2/EN 10095 – X6CrNiMoTi17-12-2 (1.4571), GB/T 20878 – 06Cr17Ni12Mo2Ti, JIS G4303 – SUS316Ti, and BS EN 10088-2 – 1.4571 (316Ti), highlights excellent weldability without PWHT due to Ti stabilization, with fillers like ER316L for low-carbon joints (tensile ~515 MPa) resistant to IGC at 425-815°C. Density 8.00 g/cm³, PREN 23-28. Superior to 316 in heat; Gangsteel stocks with certs for custom weld guidance.
The chemical composition of 316Ti, as per ASTM A240/A240M – 316Ti (UNS S31635), ASTM A312/A312M – TP316Ti, ASTM A213/A213M – TP316Ti, ASTM A249/A249M – TP316Ti, EN 10088-2/EN 10095 – X6CrNiMoTi17-12-2 (1.4571), GB/T 20878 – 06Cr17Ni12Mo2Ti, JIS G4303 – SUS316Ti, and BS EN 10088-2 – 1.4571 (316Ti), is optimized for weldability, with titanium ensuring stability in welds.
|
Element |
% Range or Max |
Role in Weldability Guide |
|---|---|---|
|
Carbon (C) |
0.08 max |
Low C with Ti for low-C filler compatibility. |
|
Manganese (Mn) |
2.00 max |
Matches fillers for deoxidation. |
|
Silicon (Si) |
0.75 max |
Improves filler fluidity. |
|
Phosphorus (P) |
0.045 max |
Limited for filler integrity. |
|
Sulfur (S) |
0.030 max |
Controlled for filler cracking. |
|
Chromium (Cr) |
16.00-18.00 |
Matches fillers for passivation. |
|
Molybdenum (Mo) |
2.00-3.00 |
Requires Mo in fillers for pitting. |
|
Nickel (Ni) |
10.00-14.00 |
Stabilizes with filler Ni. |
|
Titanium (Ti) |
5x(C+N) min, 0.70 max |
Guide recommends Ti fillers for matching stabilization. |
|
Nitrogen (N) |
0.10 max |
Controlled for filler strength. |
|
Iron (Fe) |
Balance |
Base for filler matching. |
This composition under ASTM A240/A240M ensures filler guide compatibility.
Gangsteel's 316Ti meets ASME SA240/SA240M for certified welding.
For uns stainless steel plates, weldability guide aligns.
316Ti's mechanical properties, per ASTM A240/A240M and ASME SA240/SA240M, are preserved with proper weldability guide selection.
|
Property |
Minimum Value |
Welded Typical |
Weldability Guide Notes |
|---|---|---|---|
|
Tensile Strength (MPa) |
515 |
550-650 |
Guide ensures ~90% base. |
|
Yield Strength (MPa) |
205 |
220-280 |
No drop with Ti guide. |
|
Elongation (%) |
40 |
35-45 |
Good with low-C guide. |
|
Hardness (HRB max) |
95 |
85-95 |
Low with proper guide. |
|
Impact (Charpy J) |
Not req. |
80+ at RT |
Maintained with guide. |
Guide recommends fillers for property retention.
For SA240 Type 316Ti, weld data detailed.
Physical properties of 316Ti, compliant with ASTM A240/A240M and ASME SA240/SA240M, aid weldability guide selection.
|
Property |
Value |
Notes on Weldability Guide |
|---|---|---|
|
Density (g/cm³) |
8.00 |
Consistent for guide calcs. |
|
Melting Range (°C) |
1370-1400 |
High for guide melt pool. |
|
Thermal Conductivity (W/m·K) |
14.6 (at 100°C) |
Good flow with guide. |
|
Specific Heat (J/kg·K) |
500 |
Efficient for interpass. |
|
Thermal Expansion (10^-6 /°C) |
16.5 (20-100°C) |
Low stress with guide. |
|
Modulus (GPa) |
193 |
Stiffness post-weld. |
|
Electrical Resistivity (μΩ·cm) |
74 |
Moderate for arc welding. |
These ensure guide efficiency.
For 316Ti under ASTM A240/A240M and ASME SA240/SA240M, select fillers that match chemistry and maintain Ti stabilization.
Recommended fillers (per AWS A5.9/A5.4):
|
Filler Type |
AWS Classification |
Composition Notes |
Applications |
|---|---|---|---|
|
Solid Wire |
ER316L |
Low C, Mo 2-3%; no Ti |
General welding; good for P8. |
|
Flux-Cored |
E316LT |
Low C, Mo; rutile flux |
High-deposition; outdoor use. |
|
Ti-Stabilized |
ER316Ti or ER316L-Ti |
Low C, Ti 0.5-0.7% |
Matches 316Ti for high-temp IGC. |
|
Electrode |
E316L-16 |
Low C; coated |
Manual welding; versatile. |
Gangsteel's tests show ER316L fillers yield welds with tensile >500 MPa.
316Ti's corrosion resistance, per ASTM A240/A240M and ASME SA240/SA240M, is preserved with proper filler metal guide selection.
316Ti is highly weldable, Ti aiding resistance in welds per ASTM A240/A240M. No preheat; good for filler-sensitive fab.
Gangsteel's 316Ti SA240 Type 316Ti maintains ratings post-weld.
316Ti's filler guide suits chemical reactors (welded with ER316Ti), marine piping (E316LT for outdoors).
In Gangsteel's supply to U.S. pharma, 316Ti welded without IGC.
Equivalents: EN 1.4571 (similar filler guide). For A240 GR 316Ti, fillers match.
Gangsteel offers 316Ti at $3,200-3,800/ton FOB. 1-200mm thick, certs. Contact for filler guide.
Q: What is the weldability rating for 316Ti stainless steel?
A: 316Ti has an excellent weldability rating, with Ti stabilization allowing welding without PWHT and low risk of sensitization, suitable for TIG, MIG, SMAW, and SAW methods.
Q: What filler metal is recommended for welding 316Ti?
A: ER316L or E316LT is recommended for general welding of 316Ti, with ER316Ti for matching Ti in high-temp apps to maintain IGC resistance.
Q: Is preheat required for welding 316Ti stainless steel?
A: No preheat is required for 316Ti welding, as its Ti stabilization prevents sensitization, but interpass temperatures should be limited to 150°C for optimal joint quality.
Q: What is the P number for 316Ti in ASME welding?
A: The P number for 316Ti is 8 (Group 1) per ASME Section IX, grouping it with austenitic SS for procedure qualifications.
Q: Can 316Ti be welded without post-weld heat treatment?
A: Yes, 316Ti can be welded without PWHT due to Ti preventing carbide formation and sensitization in the HAZ.
Q: What is the maximum interpass temperature for welding 316Ti?
A: Maximum interpass temperature for welding 316Ti is 150°C to avoid excessive heat input and potential distortion or property loss.
Q: How does 316Ti weldability compare to 316L?
A: Both have excellent weldability, but 316Ti's Ti stabilization makes it superior for high-temp service without PWHT, while 316L's low C is better for ambient.
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