B21 · Rail Transit
Rail Transportation (C37 Independent) Stainless Steel Sheets: 304/316L Selection and 6 Part Lists
In Rail Transportation (C37 Independent), we have organized 6 parts using stainless steel: commonly used 304 / 316L / 201, with thickness ranging from 0.8–32 mm.
6 Part Lists and Material Recommendations
| Part / Component | Recommended Grade | Specifications / Thickness | Surface | Main failure modes | Reference standards |
|---|---|---|---|---|---|
| Door frame/legs/lid plates | 304/316L | 1.5–4.0mm | HL/No.4/2B | Frequent opening/closing fatigue + cleaning solution + human sweat | GB/T 3280；CJ/T 236 |
| Platform handrails/staffs/seats | 304/316L | Pipe 1.0-2.0mm; plate 1.5-3.0mm | HL/No.4 | Human contact + wear + corrosion | GB/T 3280；GB 50157 |
| Advertising frames/bins/signage | 304/201 | 0.8–2.0mm | 2B/satin/engraved | Cleaning solution + scratches + corrosion | GB/T 3280 |
| Brake disc/brake pad backplates | 304/316L/420/440 | Disc thickness 10-30mm | Surface finish/polished | Brake hot spots + thermal cracks + wear | GB/T 3280；TB/T 3541 |
| Brake/air lines/connectors | 304/316L | Pipe diameter 6-32mm | Shine/Dull | Pump Cycle Fatigue + Condensation Corrosion | GB/T 3280；TB/T 3056 |
| Carbon Brush Head/Slide Rail/Screws | 304/316L/A4-70 | By Bow Type | 2B/Dull | Arc Eroding + Friction Wear + Outdoor Corrosion | GB/T 3280；TB/T 3271 |
Inside IsStandard ConfigurationMaterial selection
Consider the usage conditions, specify material grades more conveniently.
- The most common grades in this industry are 304 (6), 316L (5), and 201 (1) —— numbers in parentheses indicate the number of parts involved, useful for quoting and material ordering.
- Consider hardness for worn parts (edges, liners, conveyors) beyond just corrosion resistance (2/6 items hit).
- Thickness range 0.8–32 mm: Thin plates are mostly formed parts (considering bend rebound and deep drawing cracking), thick plates are mostly welded structures (considering heat input and sensitization).
Frequently asked questions
What stainless steel is used most in Rail Transit (separate from C37)?
By total pages, the top 6 parts are: 304 (6), 316L (5), and 201 (1). For specific parts, check media and temperature, e.g., stainless countertops need to switch from 304 to 316L when exposed to saltwater.
What's the most vulnerable part?
By failure description, typical is "door frame/legs/covers" of sliding doors: fatigue from frequent opening and closing + cleaning agents + human sweat; recommended grades 304/316L, size 1.5–4.0mm. For this condition, specify media concentration, temperature, and cleaning method in the design phase.
What thickness should I choose?
Thickness range in the list is 0.8–32 mm. Thin plates consider forming and surface quality, thick plates consider welding and structural strength; different manufacturers may have varying values for the same part, review your drawings or conditions to confirm.
Related materials and adjacent industries
Applications6