There are many sheet metal materials suitable for stamping processing. Sheet metal materials widely used in the electrical and electronic industry include:
1. Ordinary cold rolled sheet SPCC
SPCC refers to the continuous rolling of steel ingots into coils or flakes of the required thickness through cold rolling mills. The surface of SPCC does not have any protection. It is easily oxidized when exposed to air, especially in humid environments. Dark red rust, painted, plated or otherwise protected during use.
2. Galvanized steel sheet SECC
SECC's substrate is a general cold-rolled steel coil, which becomes an electro-galvanized product after the continuous electro-galvanizing line has been degreased, pickled, electroplated and various post-treatment processes. SECC not only has the mechanical properties and approximate processability of general cold-rolled steel sheets, but also has superior corrosion resistance and decorative appearance. It has great competitiveness and substitution in the market of electronic products, home appliances and furniture. For example, SECC is commonly used in computer cases.
3. Hot dip galvanized steel sheet SGCC
Hot-dip galvanized steel coil refers to the semi-finished product after pickling or cold rolling, which is washed, annealed, immersed in a molten zinc bath at a temperature of about 460 ° C, and the steel sheet is plated with zinc layer and then tempered. Leveling and chemical treatment. SGCC materials are harder and less ductile than SECC materials (avoiding deep draw design), thicker zinc layers, and poor weldability.
4, stainless steel SUS301
The content of Cr (chromium) is lower than that of SUS304, and the corrosion resistance is poor. However, after cold working, it can obtain good tensile strength and hardness, and has good elasticity. It is mostly used for springs and EMI.
5, stainless steel SUS304
One of the most widely used stainless steels, because it contains Ni (nickel), is more resistant to corrosion and heat than steel containing Cr (chromium). It has very good mechanical properties, no heat treatment and hardening, and no elasticity.