SECC steel is an electrogalvanized commercial grade cold rolled steel that is based primarily on cold rolled base steel and then covered with diluted zinc in an electrogalvanized manufacturing facility. JIS G 3313 defines SECC steel as electrogalvanized cold-rolled soft material. This is a high quality grade of steel that is much needed for the manufacture of computer accessories and cases.
Many people try to find the full abbreviation for SECC materials. Some define it as the standard for electrogalvanized cold-rolled commercial-grade grades. This abbreviation defines the product well, however it is not an exact match for this. As the standard itself does not explain it in these terms.
Due to the thin zinc coating on its surface, this type of galvanized steel has a longer service life compared to other types of mild grades. The zinc coating protects the surface of the base steel and improves performance throughout its application. Although due to the addition of zinc there are some limitations in welding, it is mainly recommended that the formation of zinc oxides for this purpose be carried out in a ventilated space. The mechanical properties of this type allow it to be formed, drilled, cut and molded into various shapes. This can also be used for built-in structures of objects.
SECC steels are available in the market in the form of cut-to-length sheets, cut-edge coils, cold-rolled coils with electro-galvanized edges. Electrogalvanizing is done to coat the base material with a thin layer of zinc, to prevent the base material from forming iron oxides, i.e. rust. Through this electrogalvanizing process a thin layer of zinc is applied.
The SECC material comes in a thickness of 0.4 millimeters to 3.0 millimeters. Width specifications in millimeters are normally six hundred millimeters to fifteen hundred millimeters. Cutting widths are available based on customers’ needs.
The raw material considered for the electrogalvanizing process is SPCC steels, which are electrolytically galvanized to form SECC grade steel. However, the raw material for SPCC cold rolled commercial grade material is SPCH hot rolled commercial grade steel.
The difference between hot-dip galvanized material, for example, SGCC, and electrolytically galvanized material, i.e., SECC material, is the fact that hot-dip galvanized steel has a thicker layer of zinc compared to galvanized steel. electrolytically. Therefore, the thin coating quality is more appropriate in electrogalvanized type than hot dip galvanized. More appropriate is the precision control of the zinc coating thickness which is more evident in electrolytically galvanized SECC compared to hot dip galvanized material.
Grade CR1 in ISO 5002 and Grade A591-CQ in ASTM A591 are equivalent material grades for this type. The application and uses of SECC material include motor casings, computer casings, and tanks, etc. JFE, Nippon & Sumitomo Metal Corporation are some of the suppliers of this type around the world.
