321 Stainless Steel Coil Cold Rolled 2B Titanium Stabilized 0.5mm-3.0mm 1219mm Width for Welded Heat Exchanger Parts
321 Stainless Steel Coil - Titanium Stabilized 2B Finish
Our 321 stainless steel coil is stabilized with titanium (5xC minimum) to prevent intergranular corrosion during welding and elevated temperature service. Unlike 304/304L, the titanium addition ties up carbon to prevent chromium carbide precipitation at grain boundaries, eliminating the need for post-weld heat treatment. With a cold rolled 2B finish, this product is the preferred choice for European and Middle Eastern manufacturers of heat exchangers, pressure vessels, boiler components, and high-temperature welded assemblies.
Key Features
- Titanium Stabilized: Ti content (5xC min) prevents chromium carbide formation at grain boundaries, ensuring weld zone integrity without post-weld annealing
- Excellent High Temperature Strength: Superior creep and stress rupture properties compared to 304/304L at temperatures of 500-900°C
- Intergranular Corrosion Immunity: Resistant to sensitization (grain boundary carbide precipitation) in the 425-815°C range
- Good Oxidation Resistance: Performs reliably in oxidizing atmospheres up to 816°C in continuous service
- Weld-Friendly Design: Can be welded using all standard methods without risk of weld decay
Technical Specifications
| Grade | 321 (UNS S32100 / EN 1.4541) |
| Standard | ASTM A240/A240M |
| Thickness Range | 0.5mm - 3.0mm |
| Width Range | 1219mm, 1500mm |
| Surface Finish | 2B (Cold Rolled, Annealed & Pickled) |
| Coil ID | 508mm / 610mm |
| Ti Content | 5 x C% min (typically 0.3-0.7%) |
| Chemical Composition | C≤0.08%, Cr 17-19%, Ni 9-12%, Ti 5xC min, Mn≤2.0%, Si≤1.0% |
Target Markets & Applications
- Europe: PED-certified pressure vessels, heat exchangers, expansion joints
- Middle East: Refinery heat exchangers, boiler superheater tubes, thermal oxidizers
- North America: Aircraft exhaust manifolds, expansion bellows, fire walls
- Food processing equipment requiring welded construction without post-weld treatment
Packaging & Delivery
Coils are protected with PE film and VCI (Volatile Corrosion Inhibitor) anti-rust paper, banded with steel strips, and packed on fumigated export wooden pallets. MTC (Mill Test Certificate) EN 10204 3.1 provided with each shipment.
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