How to treat stainless steel posing as 304 stainless steel chaos

Recently, some stainless steel distributors have appeared in the interest of personal interests and have caused certain small manufacturers to stamp the “XX brand SUS304” stamped on the stainless steel pipe of the material 201 to be used to impersonate the 304 stainless steel pipe.

Why does this happen?

1. The current price of stainless steel materials is highly transparent and the profit margin is low, leading some illegal traders to impersonate 304 with 201.

2. The users of stainless steel materials still stay in the blind zone of the identification material stamped with steel stamps. When it is realized, many users of the stainless steel pipe industry do not require stamping of materials on products or export products.

3, the pursuit of cheap, low price psychology.

It is well known that the 304 material is the most widely used stainless steel material. 304 stainless steel standard is called 0Cr18Ni9, the United States standard called ASTM 304, the Japanese standard method SUS304, and the most commonly used name on the market is SUS304 stainless steel, 304 stainless steel has good mechanical properties, high toughness, high temperature, corrosion resistance Excellent performance characteristics. 304 Nickel content is above 8%, chromium content is above 18%, and carbon content is below 0.08%. Compared with the material of 201, the nickel content is generally about 1%, the chromium content is about 13%, and the carbon content is also about 0.15%. When it is realized, the popular 201 stainless steel material in the market is not the real American standard ASTM201, but it is said in China. 200 series: 200A, J1, J3, J4 and other materials, the 200 series of stainless steel pipe prices are generally 9,000 yuan / ton, while the 304 is now in the plate 13,000 yuan / ton, how can the pipe 9000 can buy it?

How to distinguish between 201,304 stainless steel?

1, can buy stainless steel identification water inspection, suitable for ordinary consumers, their own installation of security nets, stair railings use.

2, can take the material to the testing department for testing, suitable for the material elements, mechanical performance requirements of the manufacturers.