Stainless steel mug materials are generally 201,202 and 304 stainless steel, the two most common are 304 and 201 stainless steel. Although the material is different, but both the material production and processing of stainless steel mug looks the same, ordinary people basically can not identify, even in the stainless steel industry may not be able to 100% 304 and 201 stainless steel.
You can judge from the following points.
1.304 stainless steel corrosion resistance, high price: 201 and 304 stainless steel in essence, the difference is mainly manifested in the two elements are not the same. 304 stainless steel corrosion resistance and stamping performance far better than 201, and 304 stainless steel is generally used in complex environments, where strong resistance to corrosion, 201 is used for environmental requirements is not very high, or the stainless steel material requirements are not Somewhere high.
2.304 Stainless steel is more expensive: in terms of price, 304 is much higher than 201's. 304 quality is better than 201 stainless steel, and 304 is imported stainless steel, 201 is made of stainless steel, so the price of 304 naturally higher.
3.304 stainless steel toughness better: 201 stainless steel material is relatively hard, with a little steel, easier to crack. The 304 stainless steel mug because it contains nickel, so do not rust, and 304 stainless steel is more resilient, fatigue resistance is much better than 201.
4.201 stainless steel easy to rust: 201 high manganese content of manganese, the surface is very bright with dark, manganese is more prone to rust. The 304 stainless steel mugs contain more chromium, the surface matte, no rust. In the purchase of stainless steel thermos cup, the two cups together the difference is obvious. (Available to do experiments syrup).
5.304 stainless steel thermos cup is not easy to rust because of the formation of chromium-rich oxides on the surface of the steel body can be protected, so as to achieve the effect of healthy drinking water. The 201 stainless steel is high manganese stainless steel, high hardness and low carbon 304 than 304.
In addition, in determining the stainless steel mug material also go out of a myth, that is, stainless steel mug "stainless" is not absolutely not rusty, but relatively not rust under certain conditions. If consumers use improperly (such as tea, coffee, milk and other acidic substances), its use beyond the corrosion resistance of the environment or conditions, will naturally rust.
If there is a rusty mug there are several main possibilities:
1, the stainless steel used in the case of corrosion rust, may be due to unreasonable selection of manufacturers, that is, insulation cup manufacturers for the use of their products and use of inappropriate stainless steel grades do raw materials.
2, but also the manufacturer's production and processing technology, but off.
3, or because the mug maker does use the market does not meet the relevant state or industry standards of inferior stainless steel raw materials.