Product details table:

Physical and chemical properties:

Physical properties

Appearance:

It usually presents a silvery white metallic color, with a smooth surface and high gloss. Different surface effects can be obtained through different surface treatment processes, such as mirror polishing, brushing, etc. 304 stainless steel plates are often used in applications where their aesthetic appeal and corrosion resistance are highly valued.

Density:

The density is generally about 7.93g/cm³. For example, the density of 304 stainless steel plate is approximately 7.93g/cm³, which is slightly higher than ordinary carbon steel.

Melting point:

The melting point is relatively high, generally around 1400-1450℃. This makes it have good stability in high temperature environments.

Coefficient of thermal expansion:

The coefficient of thermal expansion is relatively small. In the range of room temperature to 100℃, the coefficient of thermal expansion of 304 stainless steel is about 17.2×10⁻⁶/℃. This feature enables it to maintain good dimensional stability in an environment with large temperature changes.

Thermal conductivity:

The thermal conductivity is poor, and its thermal conductivity coefficient is about 16 – 27W/(m・K), which is much lower than that of copper, aluminum, and other metals, so it has certain thermal insulation performance.

Electrical conductivity:

It has certain electrical conductivity, but the conductivity is relatively low. The conductivity of 304 stainless steel is about 1.4×10⁶ S/m, which is only about 4% of the conductivity of copper.

Chemical properties

Corrosion resistance:

This is one of the most important chemical properties of 304 stainless steel plates. Because a dense passivation film can be formed on its surface, this passivation film can prevent oxygen, water, etc., from contacting the metal matrix, thereby effectively preventing corrosion. For example, 304 stainless steel has good corrosion resistance in environments such as atmosphere, water, and weak acids and alkalis. It is widely used in various environments requiring resistance to rust and chemical exposure.

Antioxidation:

304 stainless steel plates have good oxidation resistance at both room temperature and higher temperatures. For example, they can withstand high temperatures in high-temperature environments without being easily oxidized and can be used in applications like heat exchangers and furnace components.

Chemical stability:

In general chemical media, 304 stainless steel plates have high chemical stability and are not easy to react chemically with common chemicals. However, in some specific strong corrosive media, such as concentrated nitric acid, hydrofluoric acid, etc., the corrosion resistance of 304 stainless steel plates may be affected.

Passivation:

After the 304 stainless steel plate is exposed to air or after passivation treatment, a passivation film will form on the surface. This passivation film can improve the corrosion resistance and oxidation resistance of stainless steel. Passivation treatment usually involves immersing the stainless steel plate in a solution containing an oxidant, such as nitric acid, potassium dichromate, etc., to promote the formation and repair of the passivation film.

Application:

304 stainless steel plates are widely used in many fields due to their excellent corrosion resistance, high strength, and good processing performance. In the field of medical devices, they are used to manufacture surgical instruments, implants, etc., and their sterility and biocompatibility ensure safety. In the building decoration industry, they are often used for countertops, wall panels, handrails, and artistic sculptures, combining beauty with durability. In mechanical manufacturing, they can be processed into key components such as machine parts and structural supports to ensure stable operation of equipment. In the food processing industry, 304 stainless steel plates are used to construct machinery, containers, and work surfaces to meet strict hygiene standards. In addition, in the fields of chemical equipment, electronic appliances, etc., 304 stainless steel plates are also indispensable. They are used to manufacture reactors, storage tanks, electronic equipment housings, etc., and can adapt to complex working environments.