Super Austenitic Acid-Resistant Sheet, Provides Top-Tier Solutions for Strongly Corrosive Chemical Environments like Concentrated Sulfuric and Phosphoric Acid
| Element | Content (%) | Corrosion Resistance Role |
|---|---|---|
| Cr (Chromium) | 23.0–28.0 | Forms a high-chromium passive film with repair rate of 0.3nm/h in strong acids, preventing corrosive penetration. |
| Ni (Nickel) | 19.0–23.0 | Stabilizes austenitic structure, enhances resistance to non-oxidizing acids (e.g., sulfuric acid), reduces stress corrosion tendency. |
| Mo (Molybdenum) | 4.0–5.0 | Improves resistance to chloride pitting; pitting potential ≥+450mV, superior to conventional austenitic stainless steels. |
Physical Properties: Density 8.0g/cm³; melting point 1350–1400℃; thermal expansion coefficient 14.5×10⁻⁶/℃, suitable for environments with large temperature variations.
Chemical Properties: Corrosion current density ≤0.5μA/cm² in 3.5% NaCl solution (25℃); crevice corrosion resistance index PREN ≥40.
Grade: 904L stainless steel (ASTM A240, UNS N08904).
Thickness: 5–50mm (stock 8–30mm; 50mm available upon request).
Width: 1500–2000mm; Length: up to 6000mm.
Surface Finish: Solution annealed & pickled (BA), mechanically polished (2B), optional sandblasted anti-slip surface.
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: 10mm × 2000mm
Advantage: Withstands 98% sulfuric acid for 10 years without perforation
Case: BASF phosphoric acid reactor lining
Specification: 8mm × 1800mm
Advantage: Resists seawater erosion for 20 years, corrosion depth ≤0.1mm
Case: CNOOC South China Sea drilling platform support structures
Produced using VOD vacuum degassing furnace; sulfur content ≤0.001%, inclusion rating ≤Grade 1, ensuring uniform thick plate performance.
Price per ton is 40–60% higher than 316L, but service life is extended 3–5 times, reducing total cost of ownership by 20%.
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.
