What is the difference between 316 stainless steel and 304?

1, the grade problem

304 and 316 in the extension of 304L and 316L, respectively, the respective grades are as follows

304 is 06Cr19Ni10, 304L is 00Cr19Ni10;

316 is 0Cr17Ni12Mo2, 316L is 00Cr17Ni14Mo2.

2, the problem of alloying elements.

304 and 316 material content comparison table

3, food grade problem.

According to the material said 304 material content to reach the food grade, the market is common food-grade material is about three: 304, 316 stainless steel. 304 is common in our small household appliances or cups of water, 316 some used in medical equipment, 430 is often used to do cutting tools stainless steel material.

4, corrosion resistance.

Various types of water (distilled water, drinking water, river water, boiler water, etc.), 304 stainless steel and 316 stainless steel corrosion resistance is almost the same, but when the medium of chloride ions in the content is very high, 316 stainless steel is more suitable.

5, the price problem.

Because of the molybdenum and nickel elements added in 316, 316 stainless steel is more expensive than 304 stainless steel.

Extended information:

316 stainless steel corrosion resistance is better than 304 stainless steel, in the production process of pulp and paper has good corrosion resistance. And 316 stainless steel is also resistant to marine and aggressive industrial atmospheres.

Reference:

Baidu encyclopedia-316 stainless steel