Visually, there is no difference by any means, 304 grade steel and 316 grade steel are cleaned, grained and completed in precisely the same way. The best way to decide the thing that matters is to demand a material test report (MTR).
The case for 304 grade stainless steel
304 grade stainless steel is considered the most flexible and generally utilized of the austenitic stainless steels(Which is also known as “ประตูน้ำสแตนเลส” in the Thai language). The 304 steel type is fit for meeting a wide assortment of actual necessities making it an ideal material to use for applications, for example, wheel covers, kitchen gear and capacity tanks.
304 steel gives great obstruction against moderate acidic assault however is viewed as mediocre when contrasted with the 316 steel type.
Image Source : Google
The case for 316 grade stainless steel
When contrasted and 304, 316 is viewed as more warmth safe and gives prevalent erosion obstruction, because of the presence of the molybdenum component.
316 is viewed as undeniably more impervious to various compound arrangements like sulphuric corrosive, bromides and iodides. Its capacity to withstand such arrangements make it the favoured material of utilization for applications to be introduced in drug offices or clinical conditions.
In the least difficult manner, I can muster, the difference between 304 grade stainless steel and 316 grade stainless steel is as per the following:
· 304 – contains 18% chromium and 8% nickel while
· 316 – contains 16% chromium, 10% nickel and 2% molybdenum