321 321H Titanium Stabilized Stainless Steel Sheet Plate with High Temperature Resistance and 0.5mm-60mm Thickness
Product Details
| Alloy: | 321 (UNS S32100) / 321H (UNS S32109) | Temper: | Annealed, Cold Rolled, Hot Rolled |
|---|---|---|---|
| Thickness: | 0.5mm - 60mm | Width: | 1000mm, 1219mm, 1250mm, 1500mm, 2000mm |
| Length: | 2000mm, 2438mm, 3000mm, 6000mm Or Customized | Standard: | ASTM A240, EN 10028-7, GB/T 4237, JIS G4304 |
| Surface Finish: | No.1, 2B, BA, No.4, 8K | Tensile Strength: | ≥ 515 MPa |
| Yield Strength: | ≥ 205 MPa | Elongation: | ≥ 40% |
| Carbon Content: | ≤ 0.08% (321), 0.04-0.10% (321H) | Application: | Heat Exchangers, Furnace Parts, Boilers, Expansion Joints, Aerospace Exhaust |
| Highlight |
321 321H Titanium Stabilized SS Sheet,High Temperature Stainless Steel Plate,Heat Exchanger 321H Alloy Sheet |
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Product Description
The 321 and 321H stainless steel sheets are titanium-stabilized austenitic chromium-nickel alloys engineered for exceptional performance in high-temperature environments. The deliberate addition of titanium (minimum 5 * C content) effectively prevents chromium carbide precipitation at grain boundaries, ensuring immunity to intergranular corrosion even after extended exposure to the critical 425-900°C sensitization range. Grade 321H, with controlled higher carbon content (0.04-0.10%), provides superior elevated temperature strength for structural applications.
- Titanium Stabilization: Ti content ≥ 5 * Carbon eliminates sensitization and intergranular attack after welding or thermal cycling
- High Temperature Resistance: Excellent scaling resistance up to 900°C in continuous service, 816°C in intermittent service
- Superior Creep Strength (321H): Controlled higher carbon provides enhanced creep rupture strength at elevated temperatures
- Excellent Weldability: No post-weld annealing required thanks to titanium stabilization
- Good General Corrosion Resistance: Comparable to 304/304L in most environments with added high-temperature capability
- Thermal Fatigue Resistance: Outstanding performance under cyclic heating and cooling conditions
| Element | C | Mn | Si | P | S | Cr | Ni | Ti | N |
|---|---|---|---|---|---|---|---|---|---|
| 321 | ≤0.08 | ≤2.00 | ≤0.75 | ≤0.045 | ≤0.030 | 17.0-19.0 | 9.0-12.0 | 5*(C+N)-0.70 | ≤0.10 |
| 321H | 0.04-0.10 | ≤2.00 | ≤0.75 | ≤0.045 | ≤0.030 | 17.0-19.0 | 9.0-12.0 | 4*(C+N)-0.70 | ≤0.10 |
| Property | 321 | 321H |
|---|---|---|
| Tensile Strength | ≥ 515 MPa | ≥ 515 MPa |
| Yield Strength (0.2% offset) | ≥ 205 MPa | ≥ 205 MPa |
| Elongation in 50mm | ≥ 40% | ≥ 40% |
| Hardness (Rockwell B) | ≤ 95 HRB | ≤ 95 HRB |
| Max Service Temp (Continuous) | 900°C | 900°C |
| Parameter | Range |
|---|---|
| Thickness | 0.5mm - 60mm |
| Width | 1000mm - 2000mm |
| Length | 2000mm - 6000mm or Custom |
| Surface Finish | No.1, 2B, BA, No.4, 8K Mirror |
- Shell and tube heat exchanger tubesheets and baffles
- Furnace muffles, retorts, and radiant tubes
- Boiler superheater and reheater tubing
- Expansion joints and bellows in high-temperature piping
- Aircraft exhaust stacks and collector rings
- Petrochemical refinery heater tubes
- Thermal oxidizer components
- Verified Titanium Content: Spectrographic analysis confirms Ti ≥ 5 * C in every batch
- Intergranular Corrosion Tested: ASTM A262 Practice E (Strauss test) certification available
- High Temperature Test Reports: Creep rupture data and elevated temperature tensile properties provided
- Full Traceability: MTC EN 10204 3.1 with complete chemical and mechanical data per shipment
- Mill Source Direct: Sourced from TISCO, Baosteel, and JISCO for consistent premium quality
Product Highlights
321 and 321H titanium stabilized austenitic stainless steel sheets engineered for sustained high-temperature service up to 900°C. Titanium addition prevents chromium carbide precipitation, eliminating intergranular corrosion after welding or thermal cycling. Ideal for heat exchangers, furnace parts, boiler components, and aerospace exhaust systems.
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