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304 stainless steel coil
304 stainless steel coil is composed of alloy elements such as 18% chromium and 8% nickel to form austenitic stainless steel material. A dense passivation film is formed on the surface, which has excellent corrosion resistance and oxidation resistance. It has high strength and good toughness, and can be formed by cold/hot rolling. It undergoes various surface treatments such as 2B and BA. It is widely used in fields such as architectural decoration, home appliance manufacturing, food and medical treatment. It is a metal coil that combines practicability and aesthetics.
Category: 304 stainless steel coil
Key word: 304 stainless steel coil
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Product details table:
Physical properties and chemical properties:
Physical properties
Appearance:
Usually silver-gray, with a smooth surface and metallic luster.
Density:
About 7.93g/cm³, which is moderate compared to other common metals.
Magnetism:
Non-magnetic, but may produce weak magnetism after cold processing.
Melting point:
The melting point is between 1398-1454℃, with a high melting point, and can maintain good stability in high temperature environments.
Coefficient of thermal expansion:
In the temperature range of 20-100℃, the coefficient of thermal expansion is about 17.3×10⁻⁶/℃. As the temperature changes, its size will expand or shrink to a certain extent.
Thermal conductivity:
The thermal conductivity is 16.2W/(m・K), with good thermal conductivity and the ability to quickly transfer heat.
Electrical conductivity:
The electrical conductivity is about 1.4×10⁶ S/m, which has a certain degree of electrical conductivity.
Chemical properties
Corrosion resistance:
304 stainless steel coils contain alloy elements such as chromium (Cr) and nickel (Ni). Chromium easily reacts with oxygen in the air and forms a dense chromium oxide film on the surface. This oxide film can prevent the internal metal from further chemically reacting with external substances, making it have good corrosion resistance and can resist corrosion from weak corrosive media such as atmosphere, water, and steam, as well as chemically corrosive media such as acids, alkalis, and salts.
Oxidation resistance:
At room temperature, 304 stainless steel coils have good oxidation resistance. In high temperature environments, its oxidation resistance is also better than that of ordinary carbon steel, but oxidation reactions may still occur under specific high temperatures and strong oxidizing atmospheres.
Stability:
In general chemical environments, 304 stainless steel coils have high chemical stability and are not prone to chemical reactions that change their properties. However, in some special cases, such as long-term exposure to chloride ion environments, pitting or stress corrosion cracking may occur.
Application:
304 stainless steel coil is made of austenitic stainless steel with 18% chromium, 8% nickel and other alloy elements. It forms a dense passivation film on the surface and has excellent corrosion resistance and oxidation resistance. It has high strength and good toughness. It can be cold/hot rolled and has a variety of surface treatments such as 2B and BA. It is widely used in architectural decoration, home appliance manufacturing, food and medical fields. It is a metal coil that combines practicality and aesthetics.
