Suitable for the production of ordinary stainless steel exterior parts, decorative panels, equipment housings, brackets, chassis structural parts, indoor sheet metal parts, and cost-sensitive stainless steel sheet metal parts.
Stainless steel SUS201 is a sheet metal part material based on 201 stainless steel plates, produced through laser cutting, CNC punching, bending, welding, grinding, brushing, polishing, sandblasting, and other processes. SUS201 is a low-nickel, high-manganese austenitic stainless steel with certain corrosion resistance, good strength, and a stainless steel metal appearance. It is commonly used for ordinary decorative parts, equipment housings, panels, brackets, chassis structural parts, and cost-sensitive stainless steel sheet metal parts. Compared to SUS304, SUS201 is less expensive, but generally has weaker corrosion resistance, weather resistance, and long-term stability.
By focusing on application scenarios, boundaries of advantages, and non-recommended scenarios, it helps sales, customer service, and quoting staff quickly determine whether the material meets current part requirements.
Cost is lower than 304 stainless steel, has a metallic stainless steel texture, good strength, good rigidity, suitable for bending sheet metal, brushing and polishing, suitable for ordinary interior decoration parts, more corrosion-resistant than carbon steel bare panels, and suitable for cost-sensitive stainless steel exterior parts.
Interior decorative panels, equipment housings, instrument panels, standard computer cases and cabinets, brackets, mounting plates, protective covers, display racks, decorative hardware, non-core kitchen structural parts, ordinary stainless steel exterior parts, advertising display parts, low to medium load sheet metal structural parts, indoor equipment sheet metal parts.
Parts in seaside high salt spray environments, exposed parts for long-term outdoor use, highly corrosive environment parts, long-term direct contact with food, medical implant parts, high-end corrosion-resistant equipment parts, chemical equipment parts, high-temperature strongly corrosive parts, parts requiring corrosion resistance higher than 304 or 316, stainless steel parts requiring long-term maintenance-free maintenance.
The following parameters come from product information and material knowledge fields, used for design review, quotation communication, and preliminary judgment before material selection.
| Material positioning | Suitable for the production of ordinary stainless steel exterior parts, decorative panels, equipment housings, brackets, chassis structural parts, indoor sheet metal parts, and cost-sensitive stainless steel sheet metal parts. |
|---|---|
| Precision performance | SUS201 is suitable for laser cutting, CNC punching, bending, welding, riveting, and general sheet metal fabrication. The cutting profile and hole position accuracy are relatively good. The overall bent dimensions are affected by plate thickness, bending radius, material hardness, bend springback, number of bendings, and equipment precision. SUS201 generally has higher hardness and resilience than ordinary cold-rolled steel plates, so attention must be paid to angle control and surface scratches during bending. |
| Dimensional tolerances | Dimensional tolerances for standard laser cutting can be referenced as ± 0.10mm to ±0.30mm; the overall dimensional tolerance after bending can be referenced as ±0.30mm to ±1.00mm; welded structural parts can be evaluated at ±0.50mm-±2.00mm. Small-sized simple bent parts are usually easier to control, while large, multi-bend, welded, and polished parts may have greater deviations. This value is a general reference range and does not guarantee absolute tolerances for all structures. In practice, it should be confirmed by considering plate thickness, structure, number of bendings, welding method, and surface treatment. |
| Minimum Wall Thickness | SUS201 is usually selected based on panel thickness, with common thicknesses including 0.5mm, 0.8mm, 1.0mm, 1.2mm, 1.5mm, 2.0mm, 2.5mm, 3.0mm, etc. Ordinary decorative panels can use 0.5mm-0.8mm; for ordinary shell parts, the board thickness is recommended not less than 0.8mm-1.0mm; for areas requiring welding, riveting, tapping, bearing assembly forces, or structural support, it is recommended to increase thickness appropriately. |
| Recommended wall thickness | Standard decorative panels and lightweight enclosures are recommended 0.8mm-1.2mm; equipment housings, protective covers, brackets, and mounting plates are recommended 1.0mm-2.0mm; positions bearing assembly forces, screw tightening, riveting, or medium loads are recommended 1.5mm-3.0mm, and rigidity is improved through folding, flanging, pressing, reinforcing ribs, or local thickening. |
| Minimum aperture | For laser cutting or CNC punching, the recommended hole diameter should be no less than one of the plate thickness, and for stable design, the hole diameter should be no less than 1.0mm-1.5mm. Small holes, dense holes, and holes near bending lines are prone to deformation, burrs, or unstable machining. Screw holes, positioning holes, riveting holes, and assembly holes should be reasonably allowable according to board thickness, fastener specifications, surface treatment methods, and processing methods. |
| Assembly clearance | For ordinary sheet metal assembly, it is recommended to reserve 0.20mm-0.50mm on one side; for insertion, flanging, slots, and multi-bend combination structures, it is recommended to appropriately enlarge the clearance according to plate thickness, bending error, and surface treatment requirements. Welded structural components should reserve greater assembly adjustment space based on welding deformation. When assembling brushed exterior and mirror-finished parts, avoid excessive tightness to prevent surface scratches. |
| Detailed performance | SUS201 sheet metal is suitable for making holes, grooves, folded edges, flanges, rib pressing, countersunks, louver holes, reinforcement ribs, welded structures, decorative panels, and standard sheet metal markings. Fine text, logos, and markings are recommended to be achieved through laser marking, etching, silkscreen printing, etching coloring, or nameplates. The cutting details on the appearance should not be too fine to avoid burrs, deformation, and weakening of details after polishing and brushing. |
| Surface effect | The original surface of SUS201 is usually silver-gray stainless steel with a metallic texture. Linear metallic textures can be achieved through brushing, glossy finish by polishing, higher reflectivity through mirror polishing, and matte industrial appearance by sandblasting. Although it looks similar to 304 stainless steel, after long-term use, especially in humid or corrosive environments, it is more prone to dark spots, rust spots, or surface discoloration. If you pursue a long-term high-end appearance, it is recommended to prioritize the 304 or 316. |
Based on material characteristics and suitable product ranges, customer needs are broken down into easier application directions to determine.
Interior decorative panels, equipment housings, instrument panels, standard computer cases and cabinets, brackets, mounting plates, protective covers, display racks, decorative hardware, non-core kitchen structural parts, ordinary stainless steel exterior parts, advertising display parts, low to medium load sheet metal structural parts, indoor equipment sheet metal parts.
Suitable for the production of ordinary stainless steel exterior parts, decorative panels, equipment housings, brackets, chassis structural parts, indoor sheet metal parts, and cost-sensitive stainless steel sheet metal parts.
The main features of SUS201 are its relatively low price, appearance close to stainless steel, and its use for ordinary interior decoration and general structural sheet metal parts. Its strength and hardness are generally good, but due to lower nickel content and higher manganese content, its corrosion resistance is inferior to SUS304 and SUS316. In humid environments, salt spray, acidic or alkaline environments, outdoor environments, and chlorine-containing environments, SUS201 is more prone to rust spots, pitting, or surface discoloration, making it more suitable for ordinary indoor environments and scenarios where corrosion resistance is not demanding.
Based on wall thickness, hole position, assembly clearance, dimensional tolerances, and material usage risks, determine in advance whether the part structure is suitable for SUS201 Stainless Steel.
Post-processing of SUS201 Stainless Steel affects appearance, dimensions, hole position, assembly clearance, and usage validation results, and should be explained in advance during quotation, DFM review, and sample confirmation stages.
Post-processing should focus on appearance display, dimensional fitting, connection assembly, and testing verification. Parts involving assembly positions need to be reserved in advance for machining, coating, and trial assembly allowances.
For common issues such as threads, snaps, strength, temperature resistance, and weather resistance, identify in advance whether the material needs to be replaced or if another processing method should be used.
When customer demand exceeds SUS201 Stainless Steel material boundaries, it is necessary to combine strength, temperature resistance, toughness, long-term stability, and mass production goals to promptly recommend alternative materials or processing technologies.
If better corrosion resistance and versatility are needed, SUS304 stainless steel can be chosen; If stronger resistance to salt spray, seaside, or chemical environments is required, SUS316 or SUS316L can be chosen; If lower costs and subsequent powder and painting are needed, SPCC, SECC, or Q235 sheet metal can be chosen; If lightweight is needed, AL5052 aluminum alloy sheet metal can be chosen; If magnetic and lower-cost appearance parts are needed, consider the SUS430.
If customers mainly care about stainless steel appearance, ordinary indoor use, cost control, and general sheet metal structures, SUS201 is a choice worth considering. If the customer's product is used in humid environments, outdoors, kitchens with long-term moisture, seasides, food equipment, or corrosive environments, it is not recommended to prioritize SUS201; SUS304, SUS316, or add surface protection solutions should be chosen. For products that require long-term stability, it is also recommended to prioritize 304 stainless steel.
After uploading 3D/2D drawings and supplementing materials, quantities, tolerances, surface treatments, and delivery requirements, XPartsLab will provide next steps in 3D printing manufacturability, cost, and delivery pathways.
