Medical stainless steel is roughly composed of iron combined with chromium and carbon. Stainless steel for household products can be divided into three grades: 430, 304 (18-8), and 18-10.
Medical stainless steel products made of medical function cabinet, medical furniture, hospital furniture, waiting chairs, medical floor cabinets and so on.
Medical stainless steel is made of +18% chromium +10% nickel, in order to make it more durable and corrosion-resistant, there is no metal ion precipitation, this stainless steel is called 18-10 stainless steel. This stainless steel is called 18-10 stainless steel. Due to its durability and complete nature, it is mainly used in the manufacture of medical equipment and cutlery.
Expanded Information:
Composition of medical steel:
Stainless steel is roughly composed of iron combined with chromium and carbon.
2 series: horse body + manganese alloy, 3 series: austenite + nickel alloy, 4 series: ferrite + carbon alloy
Household stainless steel can be divided into 4, 3 series, 430 (18-0), 304 (18-8), 316 (18-10) three grades. The number in front of the code indicates the chromium content, while the number behind it represents the nickel content.
430 stainless steel (18-0): iron + 18% or more chromium without nickel, can prevent oxidation caused by natural factors, called stainless steel, in the jis code number 430, so also known as 430 stainless steel. Can not resist oxidation caused by chemicals in the air, 430 stainless steel is not often used for a period of time, but still due to unnatural factors and oxidation (rust) of the situation. 4 series belongs to the carbon-containing stainless steel, hardness is higher than the 2 series and the 3 series, rust and corrosion resistance is lower than the 3 series, processing is difficult, easy to fracture stretching.
304 stainless steel (18-8): iron + 18% chromium + 8% nickel, can resist chemical oxidation, this stainless steel in the jis code for the 304, so also known as the 304 stainless steel; 304 is the national pressure cooker standard must be used in the material, stainless steel pressure cooker is the standard material of 304 or more (because the pressure cooker has a national standard for the material, itself to prevent the pressure cooker explosion developed, by the way, to prevent the pressure cooker from exploding. Pressure cooker explosion developed, by the way, the material is also standardized)
(18-10): but the chemical composition of the air more and more, some of the more seriously polluted places even 304 will have a rusty situation; so there are high-level supplies will be used +18% chromium +10% nickel to produce, in order to make it more durable and more corrosion-resistant, there is no metal ions precipitation, this stainless steel is called 18-10 Stainless Steel. Some cutlery descriptions say something like "Made of 18-10 state-of-the-art medical stainless steel".
The above is non-toxic stainless steel, or credit-grade stainless steel that meets standards. The simplest way to distinguish: use a magnet to suck the bottom, suction is 430, suction can not or magnetic weak is 304. But now most of the 304 pots and pans pots and pans have a layer of 420 layer of magnetic conductivity, is magnetic, so the magnet detection is not accurate, the front and back end of the spoon, and sometimes suction, because of the magnetism generated by the polishing. So the most accurate way is to suck the bottom, the most accurate detection or use N8 stainless steel potion detection.
201 (2% nickel, with phosphorus and fierce, moderate precipitation), has some magnetism.
202 (4% nickel, containing phosphorus and fierce, mild precipitation), almost no magnetism.
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