C35 · Special Equipment
Special Stainless Steel Plates for Mining/Engineering/Waste Treatment Equipment: S21800/316L Selection and 3 Part Lists
For Mining/Engineering/Waste Treatment Equipment, We Have Organized Three Parts Using Stainless Steel: Commonly Used S21800 / 316L / 254SMO, With Thicknesses Ranging from 2–30 mm.
Three Parts and Material Lists
| Part / Component | Recommended Grade | Specifications / Thickness | Surface | Main Failure Modes | Reference Standards |
|---|---|---|---|---|---|
| Mine Screen/Screen Mesh | S21800 (Nitronic 60)/High-Manganese Austenitic | 3–20mm | 2B/Grooved Surface | Mineral Erosion + Cl⁻ Corrosion + Impact; S21800 Yield Strength ≥ 345MPa (typical 400MPa), superior wear resistance to 304 | ASTM A276/A479；GB/T 3280 |
| Chute Liners/Feed Hopper Liners | S21800/Dual Phase Steel/Multi-Composite Board | 6–30mm | 2B/Overlay | Mining Erosion+Corrosion+Shock | ASTM A276；GB/T 3280 |
| Environmental Equipment Desulfurization/Cyclone Contactors | 316L/2205/254SMO | 2–10mm | 2B/Acid Cleaning | Acid Gas+Cl⁻+Wear | ASTM A240；GB/T 3280 |
Table InsideStandard Configuration. Same part may switch from 304 to 316L or 2205 based on usage conditions, making it easier than specifying grades.
Material Selection Tips
- Common Alloy Grades: S21800 (2), 316L (1), 254SMO (1) —— Numbers in parentheses indicate the number of affected areas, useful for quoting and material preparation.
- Consider Hardness for Worn Parts (Cutting Edges, Liners, Conveying Components).
- Chloride Ions and Salts are Common Corrosion Sources (Erosion Corrosion, Galvanic Corrosion) —— 2/3 affected areas hit.
- Thickness Range: 2–30 mm —— Thin Sheets for Forming (Consider Bending Rebound and Deep Drawing Cracks), Thick Sheets for Welded Structures (Consider Heat Input and Embrittlement).
Common Issues
Which Stainless Steel is Most Used in Special Equipment Manufacturing (Mining, Civil Engineering, Environmental)?
Based on the top 3 areas: S21800 (2), 316L (1), 254SMO (1) —— Specific parts still depend on media and temperature. For example, a stainless steel countertop that contacts salt water should switch from 304 to 316L.
What parts are most prone to failure?
By failure description, typical is "mining screen plates/ screens": erosion from ore flow + Cl⁻ corrosion + impact; S21800 yield ≥ 345MPa (typical 400MPa), better wear resistance than 304; recommended grade S21800 (Nitronic 60)/ high-manganese austenitic, size 3–20mm. For this type of condition, specify media concentration, temperature, and cleaning method in the design phase.
What thickness should I choose?
Thickness range in the list is 2–30 mm. Thin plates consider forming and surface quality, thick plates consider welding and structural strength; different manufacturers may have different values for the same part based on your drawings or operating conditions. Recheck with your specifications.
Related Materials and Adjacent Industries
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