Stainless steel refers to steel that is resistant to weak corrosive media such as air, steam, water, and chemically etched media such as acid, alkali, salt, etc., also known as stainless acid-resistant steel. In practical applications, steel that is resistant to weak corrosive media is often referred to as stainless steel, while steel that is resistant to chemical media is referred to as acid-resistant steel. Due to the difference in chemical composition between the two, the former is not necessarily resistant to chemical media corrosion, while the latter generally has rust. The corrosion resistance of stainless steel depends on the alloying elements contained in the steel.

Kind

Stainless steel is often classified according to the state of the organization: martensitic steel, ferritic steel, austenitic steel, and the like. In addition, it can be divided into: chromium stainless steel, chrome nickel stainless steel and chromium manganese nitrogen stainless steel.

Stainless Steel Action

Stainless steel does not cause corrosion, pitting, rust or wear. Stainless steel is also one of the strongest materials in construction metal materials. Because stainless steel has good corrosion resistance, it enables structural components to permanently maintain engineering integrity. Chromium-containing stainless steel also combines mechanical strength and high extensibility, making it easy to machine parts to meet the needs of architects and structural designers.

Typical Use

Most of the requirements for use are to maintain the original appearance of the building for a long time. When determining the type of stainless steel to be used, the main considerations are the required aesthetic standards, the corrosive nature of the location atmosphere, and the cleaning system to be used. However, more and more applications are only seeking structural integrity or water impermeability. For example, the roof and side walls of industrial buildings. In these applications, the cost of building the owner may be more important than aesthetics, and the surface is not very clean. The use of 304 stainless steel in a dry indoor environment works reasonably well. However, in rural areas and cities to maintain their appearance outdoors, they need to be cleaned frequently. In heavily polluted industrial areas and coastal areas, the surface can be very dirty and even rusted. However, in order to obtain an aesthetic effect in an outdoor environment, nickel-containing stainless steel is required. Therefore, 304 stainless steel is widely used in curtain walls, side walls, roofs and other architectural applications, but it is best to use 316 stainless steel in aggressive industrial or marine atmospheres.

Stainless Steel Sliding Doors The advantages of using stainless steel in structural applications are now well recognized. There are several design guidelines including 304 and 316 stainless steel. Because "duplex" stainless steel 2205 has a good resistance to atmospheric corrosion and high tensile strength and elastic strength, this steel is also included in the European guidelines. Product shape In fact, stainless steel is manufactured in full-standard metal shapes and sizes, and there are many special shapes. The most commonly used products are made of sheet and strip steel, and special products are also produced from medium and heavy plates, for example, hot-rolled structural steel and extruded structural steel. There are also round, elliptical, square, rectangular and hexagonal welded or seamless steel tubes and other forms of products, including profiles, bars, wires and castings.

Surface Condition

As will be discussed later, a number of different commercial surface finishes have been developed to meet the aesthetic requirements of architects. For example, the surface may be highly reflective or matte; it may be glossy, polished or embossed; it may be colored, colored, plated or etched with a pattern on the surface of the stainless steel, or may be drawn, etc. To meet the designer's various requirements for appearance. It is easy to maintain the surface condition. Only occasional rinsing can remove dust. Due to the good corrosion resistance, surface contamination or similar surface contamination can also be easily removed.

Future Prospects

Since stainless steel already has many of the desirable properties required for building materials, it is unique in metal and its development continues. In order to make stainless steel perform better in conventional applications, existing types have been improved, and new stainless steels are being developed to meet the stringent requirements of advanced building applications. Due to continuous improvement in production efficiency and continuous improvement in quality, stainless steel has become one of the most cost-effective materials selected by architects. Stainless steel combines performance, appearance and use characteristics, so stainless steel will remain one of the best building materials in the world.

Storage

When storing, pay attention to moisture, dust, oil, lubricating oil, etc., as well as rust on the surface, or poor corrosion resistance. When the film is immersed in moisture between the film and the steel substrate, the corrosion rate is faster than when the film is not applied. Store in a clean, dry and ventilated place, keep the original packaging state, the film of stainless steel should avoid direct light, the film should be periodically checked, if the film deterioration (film life of 6 months) should be replaced immediately, padding If the packaging material is soaked in paper, remove the paper immediately to prevent surface corrosion.