◉ In modern society, stainless steel has become a common and important material widely used in construction, manufacturing and daily life. There are many different types of stainless steel, including common models such as 201, 304 and 316.
However, for those who do not understand the properties of the material, it is easy to be confused by the differences between these models. This article will detail the differences between stainless steel 201, 304 and 316 to help readers better understand the different models of stainless steel materials and provide some suggestions for purchasing stainless steel.
◉ First, the difference in chemical composition
The chemical composition of stainless steel is an important factor in determining its performance and characteristics. Stainless steel 201, 304 and 316 there are obvious differences in chemical composition. Stainless steel 201 contains 17.5% -19.5% chromium, 3.5% -5.5% nickel, the and 0.1%-0.5% nitrogen, but no molybdenum.
Stainless steel 304, on the other hand, contains 18%-20% chromium, 8%-10.5% nickel, and no nitrogen or molybdenum. In contrast, stainless steel 316 contains 16%-18% chromium, 10%-14% nickel, and 2%-3% molybdenum. From the chemical composition, stainless steel 316 has higher corrosion resistance and acid resistance, more suitable for use in some special environments than stainless steel 201 and 304.
◉ Second, the difference in corrosion resistance
Corrosion resistance is an important performance indicator of stainless steel. Stainless steel 201 has good corrosion resistance to most organic acids, inorganic acids and salt solutions at room temperature, but will be corroded in a strong alkaline environment. Stainless steel 304 has good corrosion resistance and is suitable for most general corrosive environments.
Stainless steel 316, on the other hand, excels in corrosion resistance, especially in acidic environments and high-temperature conditions with excellent corrosion resistance, often used in chemical, marine and other applications. Therefore, when shopping for stainless steel materials, it is crucial to choose the right model according to the specific use of different environments.
◉ Third, the difference in mechanical properties
The mechanical properties of stainless steel include indicators such as strength, ductility and hardness. Generally speaking, the strength of stainless steel 201 is slightly higher than that of stainless steel 304, but much lower than that of stainless steel 316.Stainless steel 201 and 304 have good ductility, easy to process and molding, suitable for some of the material processing performance requirements of higher occasions.
The higher strength of stainless steel 316, but also has good wear resistance and tensile resistance, suitable for withstand high strength and high temperature working environment. Therefore, when choosing stainless steel materials, you need to make a suitable choice according to the specific mechanical requirements and the use of the environment.
◉ Fourth, the price difference
There are also some differences in the price of stainless steel 201, 304 and 316. Generally speaking, the price of stainless steel 201 is relatively low, more affordable. The price of stainless steel 304 is relatively high, but due to its wide range of applications and better overall performance, it is still one of the most common stainless steel models on the market.
◉ Stainless steel 316 is relatively expensive due to its good corrosion resistance and mechanical properties, and is suitable for some special fields that require high material properties. Therefore, when purchasing stainless steel materials, you need to consider factors such as material performance and budget.
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Post time: Sep-29-2024