The difference between 202 and 201 stainless steel plates
201 stainless steel plate is one of the austenitic stainless steels, and the national standard model is 1Cr17Mn6Ni5N. In the stainless steel industry, insiders often call it chromium-manganese stainless steel because it uses more manganese metal instead of nickel. During World War II, due to the scarcity of nickel metal, manganese was used instead of nickel to create 201 stainless steel plates, which can also be said to be a substitute for 304 stainless steel plates. Due to low nickel, the corrosion resistance of 201 stainless steel plates is not very good and is often used Decoration in interior decoration.
The national standard model of 202 stainless steel plate is 1Cr18Mn8Ni5N. They are both low-nickel and high-manganese stainless steels. The nickel content is about 4% and the manganese content is about 8%. It is a nickel-saving stainless steel. 202 stainless steel plate has high strength, toughness, high wear resistance and great work hardening properties. 202 stainless steel is widely used in architectural decoration, hotel facilities, shopping malls, glass handrails, public facilities and other places (there is indeed little information on 202 stainless steel plates).
Judging from the grade, 202 has one more manganese and three more nickels than 201. In practical applications, in terms of utility, 202 is slightly better than 201, but most market users accept 201 stainless steel plates that are lower in price and have similar practical utility to 202. 202 has slightly more chromium and manganese than 201, and its mechanical and corrosion resistance are also slightly better. If tested with liquid medicine, the 201 stainless steel droplets will turn into dark brown red in an instant, and the 202 stainless steel plate droplets will turn into light brown in about 5 seconds. Red, but strictly speaking, there is little difference in the performance of these two stainless steels. Therefore, when users choose to purchase, they can find the stainless steel material suitable for their products, improve application efficiency, and save actual costs.