304 stainless steel and 306 stainless steel how to distinguish?

How to distinguish between hot rolling and cold rolling of silicon steel sheet?

304 stainless steel and 316 stainless steel difference:
1. Different chemical composition:
316 has two or three more nickels than 304. The standard composition of 304 stainless steel is 18% chromium and 8% nickel. Stainless steel that is non-magnetic and cannot change its metallographic structure by heat treatment. The GB brand is 0Cr18Ni9. 2. Different performance:
304,316 has similar strength and hardness. The difference between the two is that the corrosion resistance of 316 is much better than that of 304, and the more critical point is that molybdenum metal is added to 316, which has been improved in heat resistance.

3, different scope of application
The common curtain wall, side wall, roof choice with 304 stainless steel is more, but in some serious erosion of the industrial or Marine atmosphere, 316 stainless steel is a good choice.
Molybdenum element is added to obtain a special structure which is resistant to corrosion. Because it has better resistance to chloride corrosion than 304, it is also used as "Marine steel".