Titanium-Stabilized High-Temperature Sheet, Specifically for Aerospace Components, Exhaust Systems, and High-Temperature Heat Exchangers
| Element | Content (%) | Radiation-Resistance Role |
|---|---|---|
| Cr | 17.0–19.0 | Forms passive film, resists radiation-induced oxidation; oxide film stability improved by 20% under irradiation. |
| Ni | 9.0–12.0 | Stabilizes austenitic structure, reduces radiation-induced lattice distortion, improves toughness. |
| Ti | ≥5×C% | Preferentially combines with carbon to form TiC, avoiding Cr₂3C6 precipitation and eliminating intergranular corrosion risks. |
Physical Properties: Density 7.93 g/cm³, melting point 1400–1450℃, thermal conductivity 16 W/(m·K), suitable for applications where high heat dissipation is not required.
Radiation Performance: After exposure to 10⁶ Gy γ-ray irradiation, impact energy ≥27J (at 20℃), meeting 30-year nuclear plant design service life.
Grade: 321 Stainless Steel (ASTM A240, UNS S32100)
Thickness: 3–15mm (stock: 3–8mm; 15mm available on request)
Width: 1219–1500mm
Length: up to 4000mm
Surface Finish: Annealed & pickled (2B), mechanical polishing (Ra ≤1.6μm), optional radiation-resistant coatings available.
Stainless Steel Plate Bending/Stamping Process
Stainless Steel Plates on Storage Rack
Palletized Stainless Steel Plates
Stainless Steel Plate Rolling Line
Precision Thickness Inspection of Stainless Steel Plate
Forklift Loading Stainless Steel Plates for Shipment
Specification: 5mm × 1219mm
Advantage: Withstands 10⁶ Gy irradiation, pressure resistance 15MPa
Case: Qinshan Nuclear Power Plant main coolant pipe liner
Specification: 0.8mm × 1000mm
Advantage: ≥90% γ-ray shielding, welds free from leakage
Case: CAS Isotope Laboratory radiation shielding facility
TIG welding with ER321 filler; no preheating required; post-weld stabilization treatment recommended (850℃ × 2h, air cooling).
Each batch supplied with radiation test report (Cobalt-60 source, 10⁶ Gy) and intergranular corrosion test report (ASTM A262).
Walmay will help match the right stainless product form and specification for your application, confirm quantities and packing needs, and provide requested documents based on order requirements.
