Among domestic kitchen knives, there are mainly stainless steel knives and carbon steel knives: carbon steel knives, commonly known as "iron knives", are sharp, but easy to rust and difficult to take care of.
On the basis of carbon steel knife, stainless steel knife is added with chromium, molybdenum, vanadium and other elements, which is rust-proof and corrosion-resistant, so the appearance is cleaner and more beautiful, and it is not easy to rust, and the care is relatively simple. Sharpness of high hardness steel, such as 8 Cr, 9 Cr, Damascus, etc. , even more than carbon steel knife.
There are many kinds of kitchen knives, which can be divided into Chinese kitchen knives, Japanese kitchen knives and foreign kitchen knives besides those designed for various purposes. Japanese kitchen knives are generally used with chopping boards to prevent the blades from being damaged after cutting off the ingredients. Most foreign kitchen knives can be used directly on the conditioning table.
Extended data:
The original shape of the knife is very close to the graupel. Its shape is short handle, looking up, the ridge is unadorned and the blade is long. By the Spring and Autumn Period and the Warring States Period, the shape of Dao had changed greatly. In the Han dynasty, Dao gradually developed into one of the main battle weapons of infantry, and many different forms of long-handled Dao appeared.
There are only a few bronze knives in the world, and they are all thin and light in shape, and the thickest part is only 0.35 cm. Their shapes can be roughly divided into short-handled head knives, long-edged knives, flat-edged knives and curved-edged knives. In primitive society, ancient humans made knives of various shapes from stones, mussels and animal bones.
Most of the stones used are quartz stone, sandstone, flint and crystal stone. Stone knives made of these stones are hard and sharp, and they are good chopping tools.
Secondly, clam knives and bone knives made of clam shells and animal bones are light and sharp, which are suitable for cutting instruments. Similarly, the ancients not only used knives as labor tools, but also carried them as self-defense weapons. The knife should be strong, Fang Xianmei! Like a fierce knife, it gives people a powerful feeling! Geili for short
Baidu encyclopedia-martensitic stainless steel
Reference source; Baidu encyclopedia-kitchen knife