204 stainless steel is AISI standard steel of the United States, the domestic name is 0Cr18Mn8Ni5N, contains many impurities, corrosion resistance is less than 304, the price is also relatively low.

204 has great hardness.

304 has good toughness.

304 has more nickel than 204.

Reason for price difference: the higher the content is, the higher the price will be. 204 stainless steel contains 13 chromium, 1,304 stainless steel contains 17 chromium and 8 nickel.

There is little difference between 204 and 304 in the overall performance of corrosion resistance. The biggest difference between 204 and 304 is that the addition of Ti element makes 304 stainless steel better than the intergranular corrosion resistance of 304 material.

Generally used as food grade multi - purpose 304 stainless steel.

204(1Cr18Ni9Ti) is used more in the case of temperature from 500 ℃ to 600 ℃, which is more resistant to high temperature than 304.