Classification of 304 stainless steel how to ident

2022-07-22
  • Detail

304 stainless steel is a universal stainless steel material, and its rust prevention performance is stronger than that of 200 series stainless steel materials. High temperature resistance is also relatively good, up to 1000-1200 degrees. 304 stainless steel has excellent corrosion resistance and intergranular corrosion resistance. For oxidizing acids, the experiment shows that 304 stainless steel has strong corrosion resistance in nitric acid with a concentration ≤ 65% below the boiling temperature. It also has good corrosion resistance to alkali solution and most organic and inorganic acids

there are many different kinds of stainless steel in the market of stainless steel, including 304 stainless steel. This kind of steel has a very good market competitiveness in the market, and also has a very good development potential. At the time of development, it has been unanimously praised by the industry. This is not only because of its excellent nature, but also inseparable from the variety of classification of 304 stainless steel, which also makes it unique in the market. Now let's learn about the relevant knowledge of 304 stainless steel material classification

304 stainless steel material classification

(I) specific conditions of 304 stainless steel material classification

1 Austin series stainless steel: this kind of steel is a kind of steel commonly seen in the market of stainless steel. It contains 18% chromium and 8% nickel, so it has a very good non-magnetic property. At the same time, its processing performance is good. This kind of steel we can buy on the market has strong corrosion resistance, so it is also widely used

2. Martian stainless steel: the composition of this steel is similar to that of Austin stainless steel, but it also contains a small amount of carbon and some other types of alloys. At the same time, its price is relatively cheap. It can withstand heat treatment in the process of processing, and the hardening effect is also very good. The strength is also very representative. It is precisely because of its unique characteristics that it is also widely used

3. Fat grain stainless steel: the chromium content of this steel is relatively high, but its carbon content is relatively low. At the same time, because its chemical composition does not contain nickel, its price is relatively low, and it is also common in people's daily life

4. Precipitation hardening stainless steel: this kind of steel is quite special. It is different from other stainless steel materials. Its chemical composition contains metal substances such as copper, aluminum and titanium, so its hardening and strengthening promotion space is significantly larger than that of other stainless steel materials. In production, it is also mostly produced for those products with high requirements for load-bearing capacity. Of course, its service life is also very good

5. Duplex stainless steel: the chromium content of this steel reaches 22%, which is unmatched by other stainless steel. At the same time, it also has a very good strength, can adapt to different environments in the process of use, and can play a good role in corrosion resistance

304 stainless steel application range

304 is the most widely used stainless steel and heat-resistant steel. Used in food production equipment, general chemical equipment, nuclear energy, etc

chemical composition of 304 stainless steel

specification C Si Mn p s Cr Ni (nickel) Mo

how to identify 304 stainless steel

method 1: with the help of professionals, professionals can distinguish the true and false steel by virtue of the color and smoothness of the steel surface

method 2: special steel inspection potion, which can be purchased in general hardware stores, so you don't have to worry about the supply. 304 stainless steel, which is tested by liquid medicine and will not change color within 3-5 minutes. In addition, for 201 stainless steel, the potion will turn dark brown red in an instant, for 202 stainless steel, the potion will turn light brown red in 5 seconds, and for 301 stainless steel, the potion will turn light brick red in 1-2 minutes

method 3: magnets. The magnetism of 304 stainless steel is relatively small, so we can buy special magnets to distinguish the authenticity of 304 stainless steel according to the size of magnetism. If the magnetism is too large, it should be 202 stainless steel

recommended by 304 stainless steel manufacturers

manufacturer 1: Tianjin Xiqing District haogang Weiye stainless steel products sales center

main products: stainless steel plate; Stainless steel pipe; The stainless steel rod; Stainless steel pipe fittings; Introduction to stainless steel profile

Merchants: Tianjin Xiqing haogang Weiye stainless steel products sales center was established on August 11, 2015. The company mainly develops various stainless steel products, and has established stable cooperative relations with many stainless steel retailers, with reliable product quality

product: 304 stainless steel plate

specification: 0.5*1219*c

starting batch: ≥ 2kg

address: 50m west of JINZI Road, wangwenzhuang village, wangwenzhuang Town, Xiqing District, Tianjin

manufacturer 2: Wuxi Xinjunjie metal products Co., Ltd.

main product: 310S stainless steel plate; 304 stainless steel plate; 316L stainless steel plate; 321 stainless steel plate; 904L stainless steel plate

merchant introduction: Wuxi Xinjunjie metal products Co., Ltd. has very convenient traffic conditions around, and it is convenient to transport all kinds of stainless steel products. The company has established long-term technical cooperation relations with many stainless steel retailers, and the product quality is generally recognized by the majority of consumers

product: 304 stainless steel plate

specification: 0.5*1219*c

starting batch: ≥ 1 ton

address: no.4-1104, Zhongbei new village, Nanchang District, Wuxi, Jiangsu Province

manufacturer 3: Wuxi shuangti Stainless Steel Co., Ltd.

main product: Baosteel stainless steel; TISCO is stainless; 316L stainless steel plate; 304 stainless steel plate; Lianzhong stainless

merchants introduction: the main business model of Wuxi shuangti Stainless Steel Co., Ltd. is wholesale. What the company most wants is to use the most advanced raw materials, make the lowest price products, and give back to every consumer. The product design style is very novel and the variety is complete

product: 304 stainless steel plate

specification: 0.8*1219*c

starting batch: ≥ 100kg

address: 88-505-1140 Huian Road, Wuxi, Jiangsu (in Wuxi photoelectric new material science and Technology Park)

the difference between 304 stainless steel and 201 stainless steel

1. The commonly used stainless steel plates are divided into 201 and 304 models. In fact, the composition is different. 304 has better quality, but the price is expensive, and 201 is worse. 304 is imported stainless steel plate, 201 is domestic stainless steel plate

2. Composition: 1.201 is composed of 17cr-4.5ni-6mn-n, which is a kind of Ni steel and a substitute for 301 steel. It is magnetic after cold processing and is used for railway vehicles. 2.304 is composed of 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

3, 201 is high manganese, the surface is very bright with dark light, high manganese is easy to rust. 304 contains more chromium, and its surface is matte and does not rust Put the two together and there will be a comparison. The most important thing is that the corrosion resistance is different. The corrosion resistance of 201 is very poor, so the price is much cheaper And because 201 has low nickel content, its price is lower than that of 304, so its corrosion resistance is not as good as that of 304

4, the difference between 201 and 304 is the problem of nickel. And the price of 304 is now relatively expensive, generally close to 50000 a ton, but 304 can at least ensure that it will not rust in the process of use. (liquid medicine can be used for experiments)

5. Stainless steel is not easy to rust because chromium rich oxide formed on the surface of the steel body can protect the steel body. Material 201 belongs to high manganese stainless steel, which is harder than 304, with high carbon and low nickel

6. Different compositions (mainly from carbon, manganese, nickel and chromium to distinguish 201 and 304 stainless steel) steel grades carbon (c) silicon (SI) manganese (MN) phosphorus (P) sulfur (s) chromium (CR) nickel (Ni) molybdenum (MO) copper (Cu)

editor's summary: these 304 stainless steel plate manufacturers sell their products on the Internet. They use high-quality 304 stainless steel plate raw materials, improve the after-sales service chain, strictly control the quality of various products of 304 stainless steel plate, and have a wide range of applications, The service life is long, and the sales volume is higher year by year

西安耳鼻喉医院

福州不孕不育医院

成都男科医院

Copyright © 2011 JIN SHI