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Published: November 12, 2025 | Updated: November 12, 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) and AWS A5.9 – ER316L or ER316Ti, 316Ti emerges as a titanium-stabilized austenitic grade whose welding 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 welding 316Ti under ASME SA240/SA240M for a reactor vessel or exhaust piping where joint integrity and compatibility are critical, understanding recommendations and performance is vital. This article explores the welding guide for 316Ti, data, and insights, based on ASTM A240/A240M – 316Ti (UNS S31635) and AWS A5.9 – ER316L or ER316Ti standards and our mill tests.
From our production lines, we've optimized welding for 316Ti: In a 2024 U.S. chemical reactor fabrication, our 316Ti with ER316L filler 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 filler options, to equip you for successful welds.
Welding guide for 316Ti stainless steel, compliant with ASTM A240/A240M – 316Ti (UNS S31635) and AWS A5.9 – ER316L or ER316Ti, recommends ER316L for general low-carbon welds and ER316Ti for matching titanium stabilization in high-temp apps. This ensures weld tensile ~515 MPa and IGC resistance at 425-815°C. Density 8.00 g/cm³, PREN 23-28. Superior to 316 in heat; Gangsteel stocks with certs for custom needs.
The chemical composition of 316Ti, as per ASTM A240/A240M – 316Ti (UNS S31635), is designed for welding compatibility, with titanium ensuring stability in welds.
|
Element |
% Range or Max |
Role in Welding 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 |
Filler 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 welding guide compatibility.
Gangsteel's 316Ti meets ASME SA240/SA240M for certified welding.
For uns stainless steel plates, welding guide aligns.
316Ti's mechanical properties, per ASTM A240/A240M and ASME SA240/SA240M, are preserved with proper welding guide.
|
Property |
Minimum Value |
Welded Typical |
Welding Guide Notes |
|---|---|---|---|
|
Tensile Strength (MPa) |
515 |
550-650 |
Wires like ER316L maintain ~90% base. |
|
Yield Strength (MPa) |
205 |
220-280 |
No drop with Ti wires. |
|
Elongation (%) |
40 |
35-45 |
Good with low-C wires. |
|
Hardness (HRB max) |
95 |
85-95 |
Low with rutile wires. |
|
Impact (Charpy J) |
Not req. |
80+ at RT |
Maintained with matching wires. |
Welding guide recommends for property retention.
For SA240 Type 316Ti, welding data detailed.
Physical properties of 316Ti, compliant with ASTM A240/A240M and ASME SA240/SA240M, aid welding guide.
|
Property |
Value |
Notes on Welding Guide |
|---|---|---|
|
Density (g/cm³) |
8.00 |
Consistent for wire calcs. |
|
Melting Range (°C) |
1370-1400 |
High for wire melt pool. |
|
Thermal Conductivity (W/m·K) |
14.6 (at 100°C) |
Good flow with wires. |
|
Specific Heat (J/kg·K) |
500 |
Efficient for interpass. |
|
Thermal Expansion (10^-6 /°C) |
16.5 (20-100°C) |
Low stress with wires. |
|
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 Wire |
E316LT |
Low C, Mo; rutile flux |
High-deposition; outdoor use. |
|
Ti-Stabilized Wire |
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 welding guide.
316Ti is highly weldable, Ti aiding resistance in welds per ASTM A240/A240M. No preheat; good for guide-sensitive fab.
Gangsteel's 316Ti SA240 Type 316Ti maintains ratings post-weld.
316Ti's welding 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 guide). For A240 GR 316Ti, guides match.
Gangsteel offers 316Ti at $3,200-3,800/ton FOB. 1-200mm thick, certs. Contact for welding guide. Email: admin@gangsteel.com
Q: What is the recommended filler wire for welding 316Ti stainless steel?
A: Recommended filler wires for 316Ti include ER316L for general corrosion resistance and ER316Ti for matching titanium stabilization in high-temperature applications, ensuring weld properties align with the base metal's IGC resistance.
Q: How does filler wire choice affect 316Ti weld properties?
A: Choosing ER316L provides low-carbon welds with good ductility and corrosion resistance, while ER316Ti adds titanium to prevent sensitization and maintain high-temperature IGC resistance, yielding welds with tensile >500 MPa and elongation >35%.
Q: What is the A number for 316Ti filler wire in ASME?
A: The A number for 316Ti filler wire is A8, indicating austenitic welds with Cr-Ni-Mo-Ti composition per ASME Section IX, ensuring compatibility for P number 8 base material.
Q: What filler wire is best for welding 316Ti to 316L?
A: ER316L filler wire is best for welding 316Ti to 316L, providing low-carbon deposits that match both grades' corrosion resistance without compromising the joint's IGC or pitting performance.
Q: Is preheat required when welding 316Ti with filler wire?
A: No preheat is required for welding 316Ti with filler wire like ER316L, as its titanium stabilization prevents sensitization, but interpass temperatures should be limited to 150°C for optimal weld quality.
Q: What role does titanium play in 316Ti welding guide?
A: Titanium in 316Ti filler wires like ER316Ti stabilizes the weld against carbide precipitation at high temperatures, preventing intergranular corrosion and maintaining the base metal's IGC resistance in the heat-affected zone.
Q: What standards govern welding guide for 316Ti stainless steel?
A: Welding guides for 316Ti are governed by AWS A5.9 for classifications like ER316L, aligned with ASTM A240/A240M base specs and ASME Section IX for procedure qualifications.
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