304 stainless steel plate.
- 3000 Ton / Tons per Month
- tianjin,qingdao
- T/T
- 7 days
Product Details
Brand Name: | detect metals | Place of Origin: | China |
Product Description
Stainless Steel History
The Chinese ethnic group is the earliest country in the world to iron-smelt steel. Our ancestors mastered some of the techniques of smelting iron, steelmaking, casting and forging, and heat treatment for more than 1,700 years before the European countries as far as 3,000 years ago. Human progress has made important contributions.
stainless steel sheet has become the most basic and important material for modern industrial and agricultural production, transportation, national defense, and even people's lives. At present, although various new types of inorganic materials and organic synthetic materials have been greatly developed. However, in terms of production costs, wide applicability, etc., they are far from being able to replace steel. Therefore, the production capacity of steel is still one of the important signs to measure the national strength of a country. The reason why iron and steel materials are so widely used is because of the concentration of iron ore deposits, large storage capacity, relatively economical exploitation and smelting, and strong cold and heat deformability of semi-finished steel products. The finished product has excellent mechanical properties (strength, plasticity and impact resistance) and processability (cutting, welding, cold deformation, etc). However, compared with silicic acid materials, macromolecular synthetic materials, and certain non-ferrous metals, its biggest drawbacks are: under atmospheric or acid, alkali, salt, and other media conditions, it is easy to lose weight due to corrosion, or even complete destruction.
Development of 304l stainless steel rod
The organizations that were born in 1910-1914 were martensite, ferritic, and austenitic stainless steels. In terms of chemical composition, they were mainly Fe-Cr and Fe-Cr-Ni systems. From the end of the First World War to the end of the Second World War, nearly three decades (ie 1919-1945). With the development of various industries, china stainless steel sheet has undergone differentiation in order to adapt to working conditions. That is, based on the three organizational states of the two major systems, many were derived by increasing or decreasing the carbon content and adding various other alloying elements. New type of stainless steel. In the 30 years from the end of the second major station to the present, anti-corrosion 304l stainless steel sheet have been developed mainly for anti-seawater or salt rotten candles, absorbing Y-rays and neutrons, obtaining ultra-high strength, and saving a nickel. , stainless steel for the nuclear industry, precipitation-hardening stainless steel, and nickel-nickel-nickel stainless steel.
In recent years, ultra-low carbon stainless steels and ultra-pure ferritic stainless steels have been developed to solve the intergranular corrosion and stress corrosion problems of austenitic stainless steels. At present, there are more than 230 types of stainless steel that have been put on the market, and nearly 50 are frequently used, of which about 80% are derivatives of austenitic stainless steel (18-chromium--8-nickel), while the remaining 20%are It was developed from 13 chrome steel. The most important research and development on stainless steel grades are focused on two aspects:
The first aspect is to improve the corrosion resistance of steel. Among them, the research on the intergranular rot of 18-8 steel has not only developed the steel type but also proposed a method for solving this problem. It also promoted research on the passivation and corrosion mechanism of 304 stainless steel plate.
The second area is the development of high-strength stainless steels (ie precipitation hardened stainless steels) that developed with the advancement of aviation, aerospace and rocket technology after the Second World War. Among them, semi-austenitic precipitation-hardening stainless steels have excellent process performance (17-7PH type), can be processed easily after solution treatment, and the subsequent strengthening heat treatment (aging treatment) temperature is not high deformation is very small, in the United States this steel Mostly used in aeronautical structures, and it has been mass-produced. Countries have similar types of steel put into use.
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- DETECT METALS CO., LTD
- Contact nameJimmy Liu
- Phone86-22-86889302
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