321 Stainless Steel Strip
Stellanox Steel delivers premium-grade 321 Stainless Steel Strips designed for applications requiring excellent resistance to intergranular corrosion and high-temperature oxidation. These strips are stabilized with titanium, making them ideal for continuous exposure to temperatures up to 900°C, especially in exhaust manifolds, chemical processing, and aerospace systems.
321 stainless steel strips combine the performance of 304 stainless with added heat resistance, making them the go-to material where thermal stability and weld integrity are critical.
What is 321 Stainless Steel Strip?
321 Stainless Steel Strip is an austenitic chromium-nickel stainless steel alloy stabilized with titanium. This stabilization prevents carbide precipitation during welding and high-temperature service, making it superior to 304 in elevated temperature environments.
The strip form is typically cold-rolled and annealed, offering excellent formability, strength, and surface finish—well-suited for heat exchangers, furnace components, and thermal expansion joints.
| Products |
|---|
|
Stainless Steel |
|
Carbon Steel |
|
Duplex Stainless Steel |
|
Super Duplex Stainless Steel |
|
Alloy Steel |
|
Titanium |
|
Hastelloy |
|
Inconel |
|
Monel |
|
Aluminium |
|
Copper |
|
Pure Nickel |
|
Flanges |
|
Forged Fittings |
|
Valves |
|
Fasteners |
Key Features of 321 Stainless Steel Strip
- Titanium Stabilized: Prevents intergranular corrosion post-welding.
- High-Temperature Resistance: Performs well up to 870–900°C.
- Excellent Oxidation Resistance: Withstands scaling and oxidation in extreme heat.
- Weldable: Excellent weldability without the need for post-weld heat treatment.
- Austenitic Structure: Provides good toughness and ductility at both high and low temperatures.
- Stable Mechanical Strength: Suitable for pressure vessels and expansion joints.
Specification Chart – 321 Stainless Steel Strip
| Property | Details |
|---|---|
| Grade | 321 (UNS S32100) |
| Standards | ASTM A240, ASTM A666, EN 10088-2 |
| Thickness Range | 0.1 mm – 3.0 mm |
| Width Range | 5 mm – 600 mm |
| Coil ID / OD | 200 mm / 400–800 mm (customizable) |
| Surface Finishes | 2B, BA (Bright Annealed), No. 4 |
| Edge Condition | Slit Edge, Round Edge |
| Processing Options | Slitting, Cut-to-Length, Skin Pass |
Chemical Composition – 321 Stainless Steel Strip
| Element | Composition (%) |
|---|---|
| Chromium (Cr) | 17.0 – 19.0 |
| Nickel (Ni) | 9.0 – 12.0 |
| Titanium (Ti) | ≥ 5xC – ≤ 0.70 |
| Carbon (C) | ≤ 0.08 |
| Manganese (Mn) | ≤ 2.00 |
| Silicon (Si) | ≤ 1.00 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 |
| Iron (Fe) | Balance |
Mechanical Properties – 321 Stainless Steel Strip
| Property | Value |
|---|---|
| Tensile Strength (MPa) | ≥ 515 |
| Yield Strength (MPa) | ≥ 205 |
| Elongation (%) | ≥ 40 |
| Hardness (HRB) | ≤ 95 (Annealed) |
| Density | 7.92 g/cm³ |
Equivalent Grades
| Standard | Grade |
|---|---|
| ASTM | 321 |
| EN | 1.4541 |
| JIS | SUS 321 |
| UNS | S32100 |
| DIN | X6CrNiTi18-10 |
321 Stainless Steel Strip Weight Chart
| Thickness (mm) | Weight per m² (kg) |
|---|---|
| 0.2 | 1.58 |
| 0.5 | 3.95 |
| 0.8 | 6.32 |
| 1.0 | 7.90 |
| 1.5 | 11.85 |
| 2.0 | 15.80 |
| 3.0 | 23.70 |
Applications of 321 Stainless Steel Strip
- Automotive Exhaust Manifolds
- Heat Exchangers and Boilers
- Thermal Expansion Bellows
- Furnace and Kiln Liners
- High-Temperature Chemical Processing
- Jet Engine and Aerospace Components
- Pressure Vessels and Welded Tubing
Benefits of 321 Stainless Steel Strip
- Withstands high temperatures without loss of strength
- Stabilized against carbide precipitation during welding
- Excellent performance in heat-affected zones
- Reliable oxidation resistance in continuous heating
- Suitable for both industrial and high-performance environments
- Maintains mechanical properties in cryogenic and hot conditions
2025 Stellanox Steel |