











Unlike iron, which has been in use for more than a thousand years, stainless steel is a relative newcomer to materials science, first produced only 100 years ago. This may seem hard to believe at first, given the near-ubiquity of metals in modern life, but it's just a testament to how important a breakthrough stainless steel is. The metal has revolutionized the modern world, with applications in almost every area of manufacturing, from healthcare and catering equipment to the automotive and construction industries. In addition, it outperforms more traditional competing materials such as copper, aluminum, and carbon steel. Now, let's take a look at the history of stainless steel.
Here is the content list:
l The invention of stainless steel
l A milestone in the history of stainless steel
In 1913, Harry Brearley of Sheffield, England, discovered "non-rusting" steel. Despite many previous attempts, Brearley is credited with inventing the first true stainless steel with a chromium content of 12.8%. He added chromium to molten iron to produce a metal that would not rust. Chromium is a key ingredient because it is resistant to corrosion. After this discovery, Sheffield itself became synonymous with steel and metallurgy.
Brearley made the discovery by accident while solving the corrosion problem on the inside surface of gun barrels for the British Army at the start of World War I.
After the initial discovery, further improvements in stainless steel occurred at a fairly rapid rate. In 1919, Elwood Haynes received a patent for martensitic stainless steel; Premature-hardened stainless steel was first discovered by William J. Kroll of Luxembourg in 1929; Duplex stainless steel was produced for the first time in 1930 at Avesta Steel Works in Sweden.
Over the years, people have come to recognize the remarkable properties of stainless steel. Below is a short timeline outlining some key moments in the history of stainless steel.
l Between 1919 and 1923, the use of stainless steel was adapted to the manufacture of Sheffield surgical scalpels, tools and cutlery.
l In the early 1920s, various combinations of chromium and nickel were tested. For stainless steel, "18/8" indicates the percentage of chromium and nickel in the steel.
l In 1925, stainless steel tanks were used to store nitric acid, thus demonstrating the corrosion resistance of this unique metal.
l In 1926, the first surgical implants made of stainless steel were performed.
l In 1928, the first stainless steel fermenter was used to brew beer, proving the hygienic properties of stainless steel. Since then, the metal has been widely used in the food and beverage industry.
l In the 1930s, the first stainless steel trains were built in the United States.
l In 1931, the first stainless steel airplane was born.
l By 1935, stainless steel kitchen sinks were in widespread use.
l The Type 430 stainless steel (ferritic chrome) is used to manufacture tape recorders with a diameter of 0.1mm.
l The first stainless steel underwater television camera was introduced in 1954.
l The first tidal power station with stainless steel turbine blades was built in France in 1966.
l In the 1980s, stainless steel was used to build the world's longest movable flood barrier on the River Thames.
l In 2010, global production of stainless steel reached 31 million tons.
l In 2010, China produced about 11 million stainless steel drum washing machines.
In the last 100 years, about 100 grades of stainless steel have been discovered and put on the market. These grades are divided into four major groups, namely martensite, ferrite, austenite, and diphase. Ferritic and martensitic stainless steels are magnetic, whereas austenitic stainless steels are non-magnetic. They also add different amounts of other alloying metals, such as nickel, titanium and copper. Carbon and nitrogen are also added to enhance the overall characteristics of stainless steel.
Today, China is the world's largest producer of stainless steel. The growth of stainless steel is likely to increase as the sustainability benefits of stainless steel become more widely known. Researchers have even found that coating stainless steel with a kind of bio adhesive can make it antibacterial, adding to its many benefits. Therefore, this innovative material has the potential to extend its applications into the next century and beyond.
Stainless steel is the most widely used steel surface treatment in the world today, with the best performance to price ratio. Due to the different applications, stainless steel processing and raw material quality requirements also vary, which makes the stainless steel products very diverse, today I will introduce the stainless steel products is Stainless stell coil, which is a very widely used industrial material. In this article I will give a brief introduction to the advantages of stainless stell coils.
Why use the Stainless steel coil?
The advantages of 304 Stainless steel coil.
How to maintain the Stainless steel coil?
Stainless steel coils have many advantages, such as excellent surface quality, good brightness, high corrosion resistance, high tensile strength and fatigue strength. In terms of practicality and appearance, stainless steel coils are an excellent product. In determining the type of stainless steel to be used, the main considerations are the aesthetic standards required, the corrosiveness of the local atmosphere and the cleaning regime to be used.
Environmentally friendly and hygienic
304 Stainless steel coil eliminates all kinds of safety hazards, no odour, no harmful substances precipitated to keep the water pure, lead-free and harmless to human health.
Wear and tear resistant
304 Stainless steel coil has a beautiful, clean and bright surface that is long-lasting and scratch-free and never rusts or breaks. Generally speaking, 304 series stainless steel can form a good effect after a single scrubbing and it has a very beautiful appearance.
Low temperature resistant
304 Stainless steel coil has excellent thermal expansion and insulation properties, with slow thermal expansion and contraction and good insulation properties.
304 stainless steel is a common material in stainless steel, it has a lot of application scenarios. In order to maintain the inherent corrosion resistance of stainless steel, the steel must contain more than 18% chromium and 8% nickel. All in all, 304 Stainless steel coil is very good in terms of hardness, density and specific heat capacity.
Stainless steel coils have excellent corrosion resistance and are able to be processed in such a way that the elements in the material do not deteriorate, i.e. they are well adapted to changes in the environment. However, when using stainless steel coils, it is also important to pay attention to the working environment and the way in which they are used. If the working environment of stainless steel coils is too harsh, the protective film of stainless steel can easily be damaged. Once the protective film has been damaged, thinned or otherwise altered, the stainless steel beneath will begin to corrode. Corrosion is generally not spread over the entire surface, but in or around the defect, which is very much a safety hazard.
From the above information, do you have a better understanding of stainless steel coils, a widely used product?Jiangsu C.J.M. Stainless Steel Group is a supplier and distributor of stainless steel, nickel, steel, aluminium, titanium, brass, bronze and other products with world class production and quality control. Stainless Steel Group is a world class supplier and distributor of stainless steel, nickel, steel, aluminium, titanium, brass, bronze and more. Our company has grown to become a leading supplier to the stainless steel industry with excellent sales markets in North and South America, Europe, South East Asia, the Middle East and Africa. We have strict quality control over any of our products and strive to give you the best product experience.
Steel is an alloy with iron as the main component, and it appears more frequently around us than aluminum. Although this material is heavier than aluminum, it is easier to handle, and stainless steel sheets and other alloys are not easy to rust. In fact, a part of stainless steel sheet has both rust resistance and acid resistance (corrosion resistance). The rust resistance and corrosion resistance of stainless steel sheets are due to the formation of chromium rich oxide film (passive film) on its surface. The rust resistance and corrosion resistance are relative. The results show that the corrosion resistance of steel increases with the increase of chromium content in a weak medium such as atmosphere, water and oxidizing medium such as nitric acid.
Here is the content:
Definition of stainless steel sheet
Simple classification of stainless steel sheet
Stainless steel sheet is a kind of steel, steel refers to the content of carbon (c) in less than 2% is called steel, more than 2% is iron. In the process of steel smelting, chromium (CR), nickel (Ni), manganese (MN), silicon (SI), titanium (TI), molybdenum (MO) and other alloying elements are added to improve the properties of the steel, so that the steel has corrosion resistance (i.e. no rust), which is commonly known as stainless steel sheet. Stainless steel sheet relies on a thin, firm, fine and stable chromium rich oxide film (passive film) on its surface to prevent oxygen atoms from permeating and oxidizing continuously, so as to obtain corrosion resistance. Its corrosion resistance and oxidation resistance are closely related to its chemical composition.
Generally speaking, steel with more than 10.5% chromium is not easy to rust. The higher the content of chromium and nickel, the better the anti-corrosion performance. For example, the content of nickel in 304 material should be 8-10%, and the content of chromium should reach 18-20%. Such stainless steel sheets will not rust in general.
Does stainless steel sheet not rust? Otherwise, stainless steel sheets will rust.
Stainless steel sheet has the ability to resist atmospheric oxidation, that is, the performance of stainless steel sheet, but also has the ability to resist corrosion in the medium containing acid, alkali and salt, that is, corrosion resistance. However, the corrosion resistance of the steel varies with its chemical composition, mutual state, service condition and environmental medium type. Once there is some reason, this kind of film is constantly damaged, and oxygen atoms in air or liquid will continuously penetrate or iron atoms in metal will continuously separate out, forming loose iron oxide, which is stainless steel sheet rusting. Generally, stainless steel sheet is easy to rust in the environment with high humidity, high pH in the air or in the solution with high pH.
Of course, the smelting process of steel plant sheets will also affect the corrosion resistance of stainless steel sheets. Good smelting technology, advanced equipment, advanced process, good control of alloy element proportion, high impurity removal ratio, good control of billet cooling temperature are not easy to rust. If the surface is damaged, it is easy to rust.
Stainless steel sheet can be roughly divided into three categories: 200 series, 300 series and 400 series. Among them, the 300 series is the most commonly used. 200 series and 400 series are substitutes for 300 series. Strictly speaking, 400 series is not called stainless steel sheet, but stainless iron. Because it does not contain nickel, it can be attracted by magnets. The 200 series and 300 series are made of nickel, so they are not magnetic and cannot absorb iron.
304 is the most common variety in the 300 series, so the price trend of stainless steel sheets can be judged from the price change of 304. The 200 series contains less nickel, the 400 series contains no nickel, and the 300 series contains the most nickel, so the 300 series is the most affected by the nickel price.
300 series can be divided into 304, 304L, 316, 316L, 321, 309S, 310S and so on. The basis of differentiation is that the contents of various metal elements are different, and the characteristics of stainless steel sheets with different contents are also different. The difference between 304 and 304L lies in the different carbon (c) content. The one with L means low carbon, also called low carbon. The difference between 316 and 316L is the same.
There are many different kinds of stainless steel plates, Jiangsu C.J.M Stainless Steel Group has a complete range of stainless steel plates, to meet the needs of all parties. If you want to have more choices, please come to our company to choose! Tel. + 86-18092577236, post office postmaster@ssplatechina.com.
Stainless steel plate surface is smooth, with high plasticity, toughness and mechanical strength, and is resistant to corrosion of acid, alkaline gas, solution and other media. It is an alloy steel that is not easy to rust, but it is not absolutely rust free. Stainless steel plate refers to a steel plate which is resistant to weak medium corrosion such as atmosphere, steam and water, while acid resistant steel plate refers to a steel plate which is resistant to chemical corrosion of acid, alkali and salt. Stainless steel plate has been produced in the early 20th century, and has a history of more than one century. The stainless steel materials are often used in the printing process of laser sintering technology. Stainless steel is hard, and there are many colors to choose from, such as silver, bronze and white, which are usually used in the production of models and works of art.
Here is the content:
Main advantages of stainless steel plate
Specific development of main advantages
Characteristics of stainless steel sheet stamping
(1) It has good corrosion resistance and is durable than ordinary steel.
(2) High strength, so the possibility of sheet use is large.
(3) It is resistant to high temperature oxidation and high strength, so it can resist fire.
(4) Normal temperature processing, that is, easy to plastic processing.
(5) It is not necessary to surface treatment, high finish, simple and simple maintenance.
(6) Good welding performance.
Corrosion resistance. Stainless steel plate has the ability to resist general corrosion similar to unstable Ni Cr 304. Long time heating in the temperature range of chromium carbide may affect the alloy 321 and 347 in the bad corrosive medium. It is mainly used in high temperature applications. High temperature applications require strong sensitivity of materials to prevent intergranular corrosion at lower temperature.
High temperature oxidation resistance. Stainless steel plates have high temperature oxidation resistance, but the oxidation rate will be affected by the exposure environment and product morphology and other inherent factors.
Physical performance. The total heat transfer coefficient of metal depends on not only the thermal conductivity of metal, but also other factors. In most cases, the heat dissipation coefficient of the film, the surface condition of the rust skin and the metal. Stainless steel keeps the surface clean, so it has better heat transfer than other metals with higher thermal conductivity
(1) High yield point, high hardness, obvious cold work hardening effect, easy to crack and other defects.
(2) The thermal conductivity of carbon steel is worse than that of ordinary carbon steel, which leads to large deformation force, blanking force and drawing force.
(3) When drawing, the plastic deformation is severe hardening, and the sheet is easy to wrinkle or drop.
(4) It is easy for the drawing to die to have an adhesion tumor, which leads to serious scratch on the outer diameter of the part.
(5) When drawing, it is difficult to achieve the desired shape. The above problems are determined by the performance of stainless steel itself, mainly affected by the following five factors: - raw material performance; second, die structure and stamping speed; third, die material; fourth, stamping lubricant; fifth, the arrangement of process route.
The stainless steel plate has many advantages over other plates, so you can come to Jiangsu C.J.M Stainless Steel Group to choose stainless steel plate. We will answer your questions with the most enthusiastic attitude. Tel. + 86-18092577236, post office postmaster@ssplatechina.com.
CONTACT US
C.J.M. Stainless Steel Group Ltd is a supplier and distributor of stainless steel, nickel, steel, aluminum, titanium, brass and bronze with world class production and quality control.
+86-15229077020
Tina