What Material is Used for Sheet Metal?

What Material is Used for Sheet Metal?
There are many sheet metal materials suitable for stamping and processing, which are widely used in the electrical and electronics industry, including
1. General cold-rolled sheet SPCC
SPCC refers to steel ingots continuously rolled into coils or sheets of required thickness by a cold rolling mill, and the surface of SPCC is not protected by any protection and is easily oxidized when exposed to air, especially in humid environment where the oxidation speed is accelerated and dark red rust appears, so the surface should be painted, plated or otherwise protected when in use.

2. Galvanized steel SECC
SECC is made of general cold rolled steel coils, which are degreased, pickled, plated and post-treated in a continuous galvanized line to become galvanized products. It is a competitive and alternative product in the market of electronic products, home appliances and furniture. For example, SECC is commonly used in computer cases.

3. Hot-dip galvanized steel SGCC
SGCC material is harder than SECC material, less ductile (to avoid deep drawing design), thicker zinc layer, and poor weldability.

4. Stainless steel SUS301
Cr (chromium) content is lower than SUS304, corrosion resistance is poor, but after cold processing can obtain very good tensile strength and hardness, elasticity is better, mostly used for shrapnel springs and anti-EMI.

5. Stainless steel SUS304
One of the most widely used stainless steel, because of the Ni (nickel) than Cr (chromium) steel is richer in corrosion resistance, heat resistance, has very good mechanical properties, no heat treatment hardening phenomenon, no elasticity. 0.1mm on a 3mm thickness will result in increased maintenance costs.

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