What is the difference between 304 stainless steel and 201 stainless steel

Generally, 304 stainless steel maintain good corrosion resistance.

The difference between 201 stainless steel and 304 stainless steel: Looking from the outside, 201 stainless steel is a bit dark, a little plastic feeling, 304 stainless steel surface is bright, metallic luster, silver surface. Magnets can also tell, 201 stainless steel is magnetic, while 304 stainless steel is not magnetic. Now some 201 stainless steel is not magnetic also.

201 stainless steel contains 1 nickel, and easy to rust. 304 stainless steel contains more than 8 nickel, and is not easy to rust. Drug test also work to tell 304 stainless steel and 201 stainless steel. When the drug drops on stainless steel, 304 stainless steel generally do not change color, 201 stainless steel become red.