What is the difference between stainless steel pipe 201 and 304?Difference between 304 stainless steel and 201 stainless steel

[guidebook] : Stainless steel is the abbreviation of stainless acid-resistant steel, resistant to air, steam, water and other weak corrosive media or with stainless steel is known as stainless steel, and will be resistant...

What is the difference between stainless steel 201 and 304

1, different performance: than 201 stainless steel, 304 stainless steel is a little softer, but 304 corrosion resistance, acid and alkali resistance is a little better.

2, the application range is different: 304 stainless steel corrosion resistance, high temperature resistance is good, can be used in the bathroom, kitchen and coastal wet area; and 201 stainless steel is mainly used for dry or decorative areas.

3, the price is different: 304 stainless steel is a little more expensive than 201 stainless steel.

The difference between stainless steel 201 and 304

Stainless steel is the abbreviation of stainless acid-resistant steel, resistant to air, steam, water and other weak corrosive media or with stainless steel is known as stainless steel, and will be resistant to chemical corrosive media (acids, alkalis, salts and other chemical impregnation) corrosion of steel is called acid-resistant steel. Because of the differences in the chemical composition of the two and their corrosion resistance is different, ordinary stainless steel is generally not resistant to chemical media corrosion, while acid-resistant steel are generally stainless.

The main products of stainless steel are antibacterial stainless steel, precipitation hardening stainless steel and stainless steel mesh. Among them, precipitation hardening stainless steel has very good forming properties and good weldability, can be used as ultra-high strength materials in the nuclear industry, aviation and aerospace industry. According to the composition, precipitation hardening stainless steel is mainly divided into 400 series, 300 series, 200 series, 500 series, 600 series.

In addition, there is a difference between stainless steel 201 and 304 in plating color. General vacuum plating compared to water plating effect is better, but the two plating color method will first remove the layer of stainless steel protective film, it is recommended to do plating color stainless steel tube made of 304 stainless steel. The two also have the difference between the domestic grade, 201 stainless steel grade for 1Cr17Mn6Ni5N, and 304 stainless steel grade for 06Cr19Ni10 (or 0Cr18Ni9).

How to distinguish between 304 and 201 stainless steel pipe

201 stainless steel manganese content is high, manganese on the human nervous system has a strong toxicity, can not be used in the water supply, commonly used in decorative railing handrails. 304 belongs to the food grade stainless steel material, common stainless steel bowls, insulation cups are selected 304 material.

Some manufacturers will be second best, the 201 pipe, as 304 sell . How do we distinguish, how to recognize 201 and 304 stainless steel tube?

304 quality is better, the price is also higher, when you buy a very low price of 304 stainless steel water pipe, you have to leave a good eye to see some.

Stainless steel pipe made of 201, the surface is dull and easy to rust. Observed with the naked eye, 201 has a darker color and no luster. Touching with the hand has a rough feeling not smooth. 304 chromium content is high, the surface is matte, not rusty. Touch these two kinds of stainless steel pipes with wet water, 304 stainless steel water pipe water stains and fingerprints are easy to erase, 201 of the pipe is not easy to erase clean.