(1) Stainless steel tableware purchase standard
The tableware is printed with “13-0”, “18-0” and “18-8”. The tableware is made of stainless steel. The number in front of the code indicates the amount of chromium, and the number in the back indicates the nickel content. It is a material that does not rust the product, and nickel is a corrosion-resistant material. For example, “13-0” contains 13% chromium and contains no nickel. Pay special attention to the following when purchasing:
- When purchasing stainless steel products, you should carefully check whether the materials and steel numbers used on the outer packaging are marked; whether the manufacturer’s factory name, factory address, telephone, and container hygiene standards are indicated.
- Can be judged with a magnet. Regular manufacturers generally use 304 (ie 18-8) and 430 (ie 18-0) stainless steel as a fork spoon, 420 (ie 13-0) as a knife, 430 and 420 are magnetic, 304 is micromagnetic. But there is also a kind of tableware made of 201 and 202 materials, and it is not magnetic, but it is controversial whether it can be used to process tableware. Some people think that 201 and 202 materials contain high manganese and are not food grade stainless steel.
- Under normal circumstances, the same thickness and shape of stainless steel cutlery, high-grade tableware will be heavier than the lower-grade material tableware. However, the difference in density is very small, 304 stainless steel is 7.93, 430 and 420 density is 7.85, which is unpredictable by intuitiveness.
- It is best not to buy so-called stainless steel products in the hands of small vendors. There are many kinds of goods on the street. The boss often attracts consumers at a very low price. In fact, most of the things on the stalls are fake. The real stainless steel products are not so cheap. Because the price of the product is determined according to the cost of the materials produced, the fluffy “stainless steel” is certainly not edible grade stainless steel, so the big guys should not be tempted to buy those fake products, which will damage their health.
(2) Stainless steel tableware
The simplest way to distinguish is to use the magnet to suck the bottom, the 430 can be sucked, and the 304 and 18-10 can’t be sucked. However, the edge of the 304 pot, or the front and rear ends of the spoon, sometimes absorbs, because of the magnetic properties produced by polishing. So the most accurate way is to suck the bottom. Domestically, more than 201 mixed steel is used. The material is non-magnetic and the steel is soft!
About the purchase: First of all, when consumers buy stainless steel products, they should carefully check whether the materials and steel numbers used on the outer packaging are marked, and they can be judged by magnets. At present, the stainless steel used for the production of tableware mainly has two types of “austenitic” stainless steel and “martensitic” stainless steel. Bowls, plates, etc. are generally produced using “austenitic” stainless steel, “austenitic” stainless steel is not magnetic; knives, forks, etc. are generally produced using “martensitic” stainless steel, and “martensitic” stainless steel is magnetic.