What is the difference between 316Ti stainless steel and X6CrNiMoTi17-12-2?
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316Ti stainless steel and X6CrNiMoTi17-12-2 are essentially the same material, described under different international standards. They have the same chemical composition and properties, but are named differently in the ASTM/UNS and EN/DIN systems.
316Ti Stainless Steel Equivalent Standard
| Grade Name | Standard | System |
|---|---|---|
| 316Ti | ASTM A240 / A312 | American (UNS S31635) |
| X6CrNiMoTi17-12-2 | EN 10088-1 | European (EN/DIN) |
316Ti Stainless Steel Chemical Composition (Typical)
| Element | 316Ti / X6CrNiMoTi17-12-2 |
|---|---|
| C (Carbon) | ≤ 0.08% |
| Cr (Chromium) | 16.5–18.5% |
| Ni (Nickel) | 10.5–13.5% |
| Mo (Molybdenum) | 2.0–2.5% |
| Ti (Titanium) | ≥ 5×C (to stabilize) |
Both grades include Titanium (Ti) to stabilize against intergranular corrosion, especially after welding.
Key Features (Same for Both Grades)
Titanium-stabilized version of 316 stainless steel
Excellent resistance to corrosion and intergranular attack
Suitable for high-temperature applications (e.g., up to ~600°C)
Commonly used in pressure vessels, heat exchangers, and welded structures
Conclusion
There is no functional difference between 316Ti and X6CrNiMoTi17-12-2.
316Ti is the ASTM/UNS designation (mostly used in the U.S. and international markets).
X6CrNiMoTi17-12-2 is the European EN designation (used in the EU and some other regions).
They are equivalent grades and interchangeable in most technical and procurement applications.
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