Suitable for manufacturing chassis, equipment housings, electronic and electrical sheet metal parts, panels, brackets, mounting plates, protective covers, ordinary structural parts, and low-cost appearance sheet metal parts, as well as general-purpose cold-rolled steel plate materials.
Cold-rolled plate-SPCC is a sheet metal part material based on ordinary cold-rolled low-carbon steel sheets, produced through laser cutting, CNC punching, bending, welding, riveting, grinding, powder spraying, painting, electroplating, and other processes. SPCC has good surface quality, high plate thickness accuracy, and excellent forming performance, commonly used in chassis, equipment housings, electronic and electrical structural components, panels, brackets, mounting plates, protective covers, and ordinary sheet metal structural parts. Compared to hot-rolled sheets, SPCC has a flatter surface and more stable dimensions, making it more suitable for appearance sheet metal and precision sheet metal parts; Compared to stainless steel, SPCC costs are lower but corrosion resistance is poor, usually requiring powder coating, painting, electroplating, or other rust prevention treatments.
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.
It has good surface quality, high plate thickness and precision, good forming performance, suitable for bending and stamping, powder and painting, low cost, wide material sources, suitable for mass sheet metal fabrication, and suitable for appearance parts and ordinary structural parts.
Chassis, cabinets, electrical control boxes, equipment housings, electronic and electrical housings, instrument and meter housings, panels, mounting plates, brackets, connectors, protective covers, partitions, base plates, sheet metal frames, ordinary appearance sheet metal parts, low to medium load structural parts, internal structural parts of home appliances, sheet metal parts of industrial equipment.
Parts exposed outdoors for long periods without rust protection, highly corrosive environmental parts, food direct contact parts, medical implant parts, high-end stainless steel appearance parts, parts with very high lightweight requirements, high-strength load-bearing parts, high-wear moving parts, high-temperature long-term use parts, and metal parts requiring maintenance-free corrosion resistance.
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 manufacturing chassis, equipment housings, electronic and electrical sheet metal parts, panels, brackets, mounting plates, protective covers, ordinary structural parts, and low-cost appearance sheet metal parts, as well as general-purpose cold-rolled steel plate materials. |
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| Precision performance | SPCC cold-rolled plates are suitable for laser cutting, CNC punching, bending, riveting, spot welding, and welding processing. The cutting hole position and planar profile accuracy are relatively good; the overall bent dimensions are affected by plate thickness, bending radius, bend springback, number of bendings, and equipment precision. Multi-bent parts, welded parts, and large-size housing components require focused control of cumulative errors and deformation. Precision hole positions, positioning surfaces, and assembly surfaces are recommended for post-processing or separate tolerance control. |
| 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 sprayed parts may have greater deviations. These values are standard reference ranges and do not guarantee absolute tolerances for all structures. Actual values should be confirmed based on plate thickness, dimensions, number of bendings, welding methods, and surface treatment. |
| Minimum Wall Thickness | SPCC is usually selected based on plate thickness, with common thicknesses including 0.5mm, 0.8mm, 1.0mm, 1.2mm, 1.5mm, 2.0mm, 2.5mm, 3.0mm, and so on. For ordinary enclosures, the recommended board thickness should be no less than 0.8mm-1.0mm; for small panels, 0.5mm-0.8mm can be used; for areas requiring welding, riveting, tapping, bearing assembly forces, or structural support, it is recommended to increase thickness appropriately. |
| Recommended wall thickness | For ordinary electronic and electrical enclosures, panels, and protective covers, 0.8mm-1.5mm is recommended; for chassis, equipment housings, brackets, and mounting plates, 1.0mm-2.0mm; for assembly forces, screw locking, riveting, or medium-load positioning, 1.5mm-3.0mm is recommended, and skeletal strength is enhanced through edge folding, flipping, rebar pressing, reinforcement, or welded bones. |
| 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 in thick plates are prone to deformation, burrs, or slag accumulation. Screw holes, positioning holes, pressure rivet holes, and assembly holes should be reasonably allowable according to plate thickness, fastener specifications, spraying thickness, and processing method. |
| 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 increase the gap according to plate thickness, bending error, and spraying thickness. Welded structural components should reserve greater assembly adjustment space based on welding deformation. If powder, painting, electrophoresis, or plating is needed later, additional consideration should be given to coating thickness to avoid over-tight assembly, paint scraping, or interference from hole positions. |
| Detailed performance | SPCC sheet metal is suitable for making holes, grooves, folded edges, flanges, pressed ribs, countersunks, louver holes, reinforcing ribs, welded structures, stamped structures, and ordinary sheet metal markings. Passing through small holes, sharp corners, and narrow bridges requires consideration of burr cutting, stamping deformation, bending cracking, and processing costs. Text, logos, and labels are recommended to be achieved through laser marking, stamping, silkscreen printing, inkjet printing, etching, or nameplates; it is not recommended to design overly fine mechanical cutting text on thin plates. |
| Surface effect | SPCC the original surface of cold-rolled sheets is usually silver-gray or gray metallic, with a smoother and finer surface than hot-rolled sheets, but they are prone to fingerprints, oil stains, scratches, or slight oxidation. After powder spraying or painting, it can achieve black, white, gray, or other specified color finishes; After electroplating, silver-white, nickel, or chrome finishes can be obtained; Electrophoresis can achieve a relatively uniform protective surface. When used as exterior sheet metal parts, it is usually recommended to use powder spraying, painting, or electrophoretic treatment. |
Based on material characteristics and suitable product ranges, customer needs are broken down into easier application directions to determine.
Chassis, cabinets, electrical control boxes, equipment housings, electronic and electrical housings, instrument and meter housings, panels, mounting plates, brackets, connectors, protective covers, partitions, base plates, sheet metal frames, ordinary appearance sheet metal parts, low to medium load structural parts, internal structural parts of home appliances, sheet metal parts of industrial equipment.
Suitable for manufacturing chassis, equipment housings, electronic and electrical sheet metal parts, panels, brackets, mounting plates, protective covers, ordinary structural parts, and low-cost appearance sheet metal parts, as well as general-purpose cold-rolled steel plate materials.
SPCC cold-rolled sheet belongs to low-carbon steel cold-rolled sheets, with a smoother surface than hot-rolled sheets, generally better dimensional accuracy and shape, making it suitable for sheet metal parts that require appearance, bending accuracy, and surface coating effects. It is suitable for laser cutting, stamping, bending, spot welding, welding, riveting, and powder spraying and painting processes. SPCC does not inherently have corrosion resistance to stainless steel and is prone to rust in exposed environments. Therefore, actual products generally require powder coating, painting, electrophoresis, electroplating, galvanizing, or rust protection oil.
Based on wall thickness, hole position, assembly clearance, dimensional tolerances, and material usage risks, determine in advance whether the part structure is suitable for SPCC Cold-Rolled Steel Sheet.
Post-processing of SPCC Cold-Rolled Steel Sheet 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 SPCC Cold-Rolled Steel Sheet 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 is required, galvanized sheets such as SECC/SGCC,304 Stainless Steel, or 316 can be chosen; If higher strength is required, Q235, Q345, or high-strength steel plates can be chosen; If lightweight design is needed, 5052 aluminum alloy, 6061 aluminum alloy, or magnesium alloy can be chosen; If better outdoor weather resistance is needed, galvanized sheets, aluminum alloy powder coating sheets, or stainless steel can be chosen; If you only need low-cost, ordinary internal structural parts, SPCC is a very common choice.
If customers mainly care about cost control, surface coating effects, bending forming, general structural strength, and sheet metal fabrication for chassis and cabinets, SPCC cold-rolled sheet is a very suitable choice. If the customer's product needs to be used outdoors for a long time, in humid conditions, salt spray, or corrosive environments, it is not recommended to use exposed SPCC directly. Instead, choose galvanized sheets, stainless steel, aluminum alloy, or reliably spray and treat the SPCC with anti-rust treatment. If customers are sensitive to weight, aluminum alloy sheet metal should be prioritized.
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.
