SECC/SGCC in Stamping
SECC/SGCC are ideal for stamping because they offer excellent formability, stable dimensional accuracy, and low cost, making them widely used for enclosures, brackets, and general sheet-metal parts.
Both SECC and SGCC are types of low-carbon cold-rolled galvanized steel plates. Essentially, they are made by depositing a pure zinc anti-corrosion layer on the surface of ordinary low-carbon carbon steel (cold-rolled base material, the same as SPCC cold-rolled sheet) through electroplating or hot-dip processes, and belong to carbon steel with surface protective layers (carbon steel). SECC and SGCC are the two most widely used general base materials in modern sheet metal stamping manufacturing. They both use low-carbon cold-rolled steel cores and are covered with pure zinc protective coatings on the surface. As cost-effective and corrosion-resistant upgraded materials for bare cold-rolled steel, they have become the mainstream stamping materials in modern times because they possess reliable cold-forming performance, built-in anti-corrosion protection, low production costs, and wide process compatibility. They fill the key gap between bare carbon steel's poor corrosion resistance and the high processing costs of stainless steel/aluminum materials. They dominate a wide range of large-scale stamping applications in household appliance casings, servers and industrial cabinets, car bodies and structural components, building hardware, and electrical switchgear.
Furthermore, SECC and SGCC have maintained the excellent welding and surface treatment compatibility of low-carbon steel, further enhancing its versatility in the application of stamping components. Stamping parts can be easily connected through methods such as spot welding, TIG welding, laser welding and riveting, thereby supporting modular sheet metal manufacturing and complex assembly designs. The zinc layer surface is fully compatible with almost all standard post-processing processes, enabling manufacturers to meet diverse appearance, brand identification and performance requirements without the need for specialized equipment.
Therefore, SECC and SGCC, with their reliable stamping formability, inherent anti-corrosion properties, outstanding cost-effectiveness, and mature manufacturing and supply chain systems, have become indispensable material choices in the field of sheet metal stamping.
This is the most fundamental and widely used standard grade on the market. Its base material is SPCC (ordinary cold-rolled steel), and it is suitable for the vast majority of standard sheet metal stamping processes—such as bending, punching, blanking, and shallow flanging—making it the industry-standard "base model" for SECC.
A grade specifically designed for deep drawing, utilizing SPCD-grade cold-rolled sheet metal as the base material. It offers superior plasticity and elongation compared to standard SECC, making it suitable for sheet metal parts requiring moderate-depth drawing, complex bending, and multi-stage progressive stamping.
This is the most widely used standard hot-dip galvanized product on the market; its base material is SPCC (ordinary cold-rolled sheet), and it is suitable for conventional bending, punching, blanking, and shallow stamping—representing the industry-standard SGCC grade.
These models are specifically designed for deep drawing, utilizing SPCD and SPCE cold-rolled steel substrates. They offer significantly superior plasticity compared to the standard SGCC grade, making them suitable for applications requiring extensive deformation during stamping, such as appliance inner liners and complex drawn parts.
It has higher hardness but poor ductility, making it suitable only for structural parts requiring simple blanking or shallow-angle bending; it is rarely used in conventional sheet metal stamping.
Brass sheet metal parts naturally offer a warm golden appearance, good surface quality, and excellent machinability. However, the right surface finish can further improve corrosion resistance, wear performance, appearance, solderability, and long-term product reliability. At Longwang, we help customers select suitable finishing options based on part function, tolerance requirements, operating environment, and visual expectations.
As Machined
Standard finish, surface roughness of 3.2 μm (126 μin), removes sharp edges and deburs parts cleanly.
Tumbling
Utilizes barrel or vibratory processes with abrasives to smooth and polish the surface of parts.
Heat Treatment
Alters the physical (and sometimes chemical) properties of a material to achieve desired mechanical properties.
Anodizing
Electrochemical process that forms a durable, corrosion-resistant oxide layer on the surface of metals.
Teflon Coating
Applies a protective layer of PTFE to reduce friction and enhance corrosion resistance.
Electroplating
Electroplating is an electrochemical process that deposits a protective metal layer onto a conductive surface.
Polishing
Polishing smooths a surface to improve shine, reduce roughness, and enhance appearance.
Powder Coating
Powder coating provides a durable, scratch-resistant finish with excellent corrosion protection and a clean, attractive appearance.
Brushed
Brushed finish creates a refined linear texture with a modern, metallic look.
SECC is better suited for precision sheet metal components used indoors or requiring high-quality surface finishes and coatings; SGCC is better suited for sheet metal parts that require superior corrosion resistance or must withstand harsher environments.
pros
cons
SECC/SGCC stamping parts are widely used across electronics, automotive, plumbing, smart home, industrial equipment, and precision hardware applications. Thanks to its machinability, corrosion resistance, SECC/SGCC is suitable for both functional and mechanical components.
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We offer both rapid prototyping and large-scale production, utilizing over 700 machines and experienced engineers to deliver high quality CNC parts with minimal compromise on lead time or consistency.
For precision CNC machining, we hold tolerances as tight as ±0.01mm. For sheet metal fabrication, our standard tolerance is ±0.1mm, depending on design complexity.
We process a wide range of metals including Aluminum (6061, 7075), Stainless Steel (304, 316), Titanium, Copper, Brass, and various specialty alloys.
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Prototypes usually take 3-7 days. Mass production lead times vary from 2-4 weeks depending on the project scale and secondary finishing requirements.
Yes. We have an integrated eco-friendly coating line and offer anodizing, plating, sandblasting, and laser engraving as part of our one-stop service.
Simply upload your CAD drawings (STEP, IGS, or PDF) via our contact form. Our engineers will provide a technical assessment and quote within 24 hours.
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