316Ti Stainless Steel

316Ti stainless steel has a titanium content of roughly 0.5%. Titanium strengthens and stabilises the structure of 316Ti at high temperatures of over 800°C, protecting it from corrosion caused by carbide precipitation on the grain boundaries.

Stainless steel types 1.4401 and 1.4404 are also known as grades 316 and 316L respectively. Grade 316 is an austenitic grade second only to 304 in commercial importance.

316 stainless steel contains an addition of molybdenum that gives it improved corrosion resistance. This is particularly apparent for pitting and crevice corrosion in chloride environments.

The main advantage of 316Ti is that it can be held at higher temperatures for a longer period without sensitisation (precipitation) occurring. 316Ti retains physical and mechanical properties similar to standard grades of 316.

1. What is the equivalent grade of 316Ti stainless steel plate and its key chemical composition?

Equivalent grades: 1.4571 (EN), X6CrNiMoTi17-12-2 (DIN). Key composition: 16.5-18.5% Cr, 10.0-13.0% Ni, 2.0-2.5% Mo, 0.5-0.7% Ti, ≤0.08% C. Ti improves intergranular corrosion resistance.

2. What are the main application fields of 316Ti stainless steel plates?

 Widely used in: Chemical/petrochemical industry (high-temperature corrosive equipment), heat exchangers, marine engineering, nuclear power auxiliary systems, and pharmaceutical reactors.

3. What are the common international standards for 316Ti stainless steel plates?

Main standards: EN 10088-2 (Europe), ASTM A240/A480 (North America), JIS G 4305 (Japan), GB/T 3280 (China, equivalent to 06Cr17Ni12Mo2Ti).

4. What are the typical mechanical properties of 316Ti stainless steel plates (annealed state)?

Tensile strength ≥515 MPa, yield strength ≥205 MPa, elongation ≥40%. Excellent high-temperature strength and ductility.

5. What's the key difference between 316Ti and 316 stainless steel plates?

316Ti contains titanium (Ti) which 316 lacks. Ti stabilizes carbides, preventing intergranular corrosion at 400-850℃, suitable for higher-temperature service.

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