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Stainless steel wire
Stainless steel wire is a metal wire with alloys such as chromium and nickel as the main components. It achieves excellent corrosion resistance by virtue of a dense passivation film on the surface and has characteristics such as high strength and oxidation resistance. Depending on the composition, it presents non-magnetic or weak magnetic properties and can withstand temperatures from -200°C to 800°C. It is formed by processes such as cold drawing, with diverse wire diameter specifications and is widely used in fields such as industrial manufacturing, healthcare, and home decoration.
Category: Stainless steel wire
Key word: Stainless steel wire
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Product details table:
Physical properties and chemical properties:
Physical properties
Appearance:
Usually presents a silver-gray metallic luster, smooth surface, and high reflectivity.
Density: Varies depending on the material, such as 304 stainless steel density is about 7.93g/cm³, 316 stainless steel density is about 7.98g/cm³.
Magnetism:
304 and 316 stainless steel are usually non-magnetic under normal conditions, but may produce certain weak magnetism after cold processing; 430 stainless steel generally has weak magnetism.
Thermal properties:
It has good heat resistance and can be used in the temperature range of -200℃ – 800℃. Its thermal expansion coefficient is about 16 – 18×10⁻⁶/℃ (20 – 100℃), and its thermal conductivity is 15 – 17W/(m・K).
Electrical properties:
The electrical conductivity of stainless steel wire is relatively low, about 1.4×10⁶ S/m.
Chemical properties
Corrosion resistance:
The main alloying element chromium (Cr) of stainless steel wire forms a dense chromium oxide passivation film on its surface. This passivation film can prevent oxygen, water and other corrosive substances from contacting the metal matrix, making it have good resistance to corrosion in the atmosphere, fresh water and general corrosive media. 316 stainless steel containing molybdenum (Mo) has stronger corrosion resistance to seawater and media containing chloride ions.
Oxidation resistance:
At room temperature and high temperature, stainless steel wire has good oxidation resistance, can resist the oxidation of oxygen in the air, and is not easy to rust and corrode. However, in an environment with high temperature, high humidity or the presence of specific corrosive gases, its oxidation resistance may be affected to a certain extent.
Chemical stability:
In a general chemical environment, stainless steel wire has high chemical stability and is not easy to react chemically with common chemicals such as acids, alkalis, and salts. However, corrosion may occur in a strong oxidizing acid (such as concentrated sulfuric acid, concentrated nitric acid) or a high concentration of chloride ions.
Application:
Stainless steel wire is widely used in multiple fields due to its characteristics such as high strength, corrosion resistance, and easy processing. In industrial manufacturing, it is used to make springs, screen meshes, wire ropes, and fasteners to meet the strength and durability requirements of mechanical structures. In home decoration, it is often used as protective nets, clotheslines, and decorative woven materials, combining practicality and aesthetics. In the medical field, because it is non-toxic and corrosion-resistant, it can be used to manufacture sutures, surgical instruments, and implant stents. In the food industry, baskets, conveyor belts, and processing utensils made of stainless steel wire meet hygiene standards and ensure food safety. In addition, in the field of electronics and electrical appliances, stainless steel wire is also used to make components such as shielding nets and cable armoring to play the role of electromagnetic shielding and mechanical protection.
