What is the difference between stainless steel 304 screws and 316 screws

At present, the most commonly used stainless steel screws are 304 and 316. Stainless steel screws are used in many industries, but what is the difference between stainless steel 304 screws and 316 screws, which is better?

1. Generally, the surface of 304 stainless steel screws shows A2, while 316 stainless steel screws show A4, A2 stainless steel screws mean austenitic cold processing, the material is SUS304, 70-scandium tensile strength is 700MPA, 80-scandium tensile strength is 800MPA. A2-50 means the same as before, with A2 and A3 representing 304 and A4 and A5 representing 316

2. Stainless steel 316 screws contain more MO than 304. Increase the corrosion of scandium, acid and alkali resistance is better

3.304 belongs to A2 and 316 belongs to A4, which mainly means that scandium tensile strength is different

4.304 stainless steel screws contain 8% nickel, 316 stainless steel screws contain 12% nickel, the price, of course, 316 is more expensive than 304.

These two materials do not say which is good, can only say that look at the customer use scenario to choose their own.