The Difference Between 201, 304, 430 Stainless Steel
The stainless steel models in China are represented by element symbols and numbers, such as 1Cr18Ni9, 0Cr18Ni9, 00Cr18Ni9, 1Cr17, 3Cr13, 1Cr17Mn6Ni5N, etc. The numbers indicate the corresponding element content. Common stainless steel models are often represented by numerals, including 200 series, 300 series, and 400 series. They are American representation methods, such as 201, 202, 302, 303, 304, 316, 410, 420, 430, etc.
The American Iron and Steel Institute is Use three digits to indicate various standard grades of forgeable stainless steel. Among them:
①Austenitic stainless steel is indicated by 200 and 300 series numbers,
②Ferritic and martensitic stainless steel is indicated by 400 series numbers. For example, some of the more common austenitic stainless steels are marked with 201, 304, 316, and 310,
③ ferritic stainless steels are marked with 430 and 446, and martensitic stainless steels are marked with 410, 420, and 440C. Duplex (austenite-ferrite),
④ stainless steel, precipitation hardening stainless steel, and high alloys with iron content less than 50% are usually named by patent names or trademarks.
2. Functional difference: 304 stainless steel is a versatile and widely used stainless steel material. It is widely used to make equipment and parts that require good comprehensive performance (corrosion resistance and formability). In the building, it can withstand general rust, resist the erosion of food processing media (but corrosion may occur in high-temperature conditions containing concentrated acids and chlorides), and resist organic compounds, dyes, and a wide variety of inorganic compounds.
Type 304L (low carbon), good resistance to nitric acid, and durable medium temperature and concentration of sulfuric acid, widely used as liquid gas storage tanks, used as low-temperature equipment (304N), appliances and other consumer products, kitchen equipment, hospital equipment, transportation Tools, wastewater treatment equipment.
The 430 stainless steel type has a lower alloy content than the 304 stainless steel type. It is used for high-polishing decoration in a mild atmosphere, and can also be used as nitric acid and food processing equipment. The difference between stainless steel 201 stainless steel and 304 stainless steel 1. Specifications: The commonly used stainless steel plates are divided into 201 stainless steel and 304 stainless steel.
In fact, they are different in composition. 304 stainless steel is of better quality, but the price is more expensive. 304 stainless steel is imported stainless steel. 201 stainless steel is generally a domestic stainless steel plate. 2. The composition of 201 stainless steel is 17Cr-4.5Ni-6Mn-N, which is an alternative to Ni-saving steel and 301 steel. After cold working, it has magnetism and is used in railway vehicles.
3. The composition of 304 is 18Cr-9Ni, which is the most widely used stainless steel and heat-resistant steel. Used in food production equipment, Xitong chemical equipment, nuclear energy, etc.
4. 201 has high manganese content, the surface is very bright with dark and bright, high manganese content is easy to rust. 304 contains more chromium, the surface is matte and does not rust. Putting the two together makes a comparison. The most important thing is the difference in corrosion resistance.
5. The difference between 201 and 304 is the nickel content. And the price of 304 is now relatively cheap, about 11,700 yuan a ton, but 304 can at least guarantee that the yuan will not rust during use. (Test solution can be used for experiment)