What are the commonly used materials for automotive mold sheet metal parts?

2024-03-26 15:43:00

There are many sheet metal materials suitable for automotive stamping parts processing. Sheet metal materials widely used in the electronic and electrical industry include:

1. Ordinary cold rolled plate SPCC

SPCC refers to the continuous rolling of steel ingots into steel plate coils or sheets of required thickness through a cold rolling mill. There is no protection on the surface of SPCC. It is easily oxidized when exposed to the air. Especially in humid environments, the oxidation rate accelerates and dark red rust appears. The surface must be painted, electroplated or otherwise protected during use.

2. Galvanized steel plate SECC

The base material of SECC is ordinary cold-rolled steel coils. After degreasing, pickling, electroplating and various post-processing processes in the continuous electro-galvanizing production line, it becomes an electro-galvanized product. SECC not only has the mechanical properties and similar processability of general cold-rolled steel sheets, but also has superior corrosion resistance and decorative appearance. It is highly competitive and substitutable in the markets of electronic products, home appliances and furniture. For example, SECC is currently commonly used in computer cases.

3. Hot-dip galvanized steel plate SGCC

Hot-dip galvanized steel coil refers to a semi-finished product that is hot-rolled, pickled or cold-rolled. After cleaning, annealing, and immersing in a molten zinc bath at a temperature of about 460°C, the steel sheets are coated with a zinc layer, and then quenched and tempered. Smoothed and chemically treated. SGCC material is harder than SECC material, has poorer ductility (avoid deep drawing design), thicker zinc layer, and poorer weldability.

4. Stainless steel SUS301

The content of Cr (chromium) is lower than that of SUS304, and its corrosion resistance is poor. However, it can obtain good tensile strength and hardness after cold processing, and has good elasticity. It is mostly used for springs and EMI prevention.

5. Stainless steel SUS304

One of the most widely used stainless steels. Because it contains Ni (nickel), it has better corrosion resistance and heat resistance than steel containing Cr (chromium). It has very good mechanical properties, no heat treatment hardening phenomenon, and no elasticity.