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321 321H Titanium Stabilized Stainless Steel Sheet Plate with High Temperature Resistance and 0.5mm-60mm Thickness
| Place of Origin | Shanxi, China |
|---|---|
| Brand Name | Hongtu |
| Certification | ISO 9001:2015, SGS, ASTM A240/A240M, EN 10028-7 |
| Model Number | 321 / 321H |
| Minimum Order Quantity | 500 kg |
| Price | USD 3.5-5.5 / kg |
| Packaging Details | PVC protective film, anti-rust paper interleaved, export-grade wooden pallet with steel strapping |
| Delivery Time | 3-7 working days for stock, 12-20 days for production |
| Payment Terms | T/T, L/C, PayPal, Western Union |
| Supply Ability | 2000 Tons per Month |
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
321 321H Titanium Stabilized Stainless Steel Sheet Plate 0.5mm-60mm Thickness for High Temperature Heat Exchanger
321 / 321H Titanium Stabilized Stainless Steel Sheet Plate
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.
Key Features
- 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
Chemical Composition (Weight %)
| 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 |
Mechanical Properties (Annealed, Room Temperature)
| 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 |
Available Dimensions
| Parameter | Range |
|---|---|
| Thickness | 0.5mm - 60mm |
| Width | 1000mm - 2000mm |
| Length | 2000mm - 6000mm or Custom |
| Surface Finish | No.1, 2B, BA, No.4, 8K Mirror |
Applications
- 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
Our Advantages
- 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
Contact us today for a competitive quotation, technical datasheets, and sample availability on 321/321H stainless steel sheets.
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