Why 304 Grade Stainless?
Food grade stainless steel is steel that is resistant to wear and tear and has heat resistance in such a way that it's safe for the use of cooking various types of food. There are a number of different grades of steel such as 18/10, 18/8, etc.
Each type of stainless steel is graded, usually in a series. This series classifies the different types of stainless from 200 to 600, with many categories in between. Each comes with distinct properties and falls into families including:
- austenitic: non-magnetic
- ferritic: magnetic
- duplex
martensitic and precipitation hardening: high strength and good resistance to corrosion
Type 304 Stainless Steel
Type 304 is the most widely used austenitic stainless steel. It is also known as "18/8" stainless steel because of its composition, which includes 18% chromium and 8% nickel. Type 304 stainless steel has good forming and welding properties as well as strong corrosion resistance and strength.
Source:
https://www.thoughtco.com/type-304-and-304l-stainless-steel-2340261
And that's the reason I bought this kind of mug:
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