By B15MiLl4hcodingcolor. Cutlery and Kitchen Knives. At Thursday, October 25th 2018, 00:32:04 AM.
Generally steel is considered stainless if it contains at least 12% Chromium. The amount of Chromium is a debatable point some say 10.5% is enough for a steel to be stainless but when looking at most better quality stainless steels 12% - 14% seems to be the norm. That said Chromium is not the only element crucial to here. The quality of a kitchen knife varies considerably with the type of steel that the knife is made from. Many knives that are simply called stainless contain virtually no Carbon. Carbon is the element that allows steel to be hardened, hard steel will hold an edge better than soft steel thus providing better edge holding. Low Carbon Stainless typically has less than 0.03% Carbon, these tends to be used on inexpensive kitchen knives and other kitchen cutlery. They do not hold a very good edge and require frequent sharpening. Some telltale signs are highly shinny blades, often they are very thin and flexible knives, and commonly have serrated blades such as those seen on a bread knife.
High Carbon Stainless Steel knives are ones that have between 0.1% and 1.0% Carbon as well as the needed amount of Chromium. They can be hardened through heat treating and will hold a good edge, requiring knife sharpening much less often. Typically these steels will also contain a combination of Molybdenum and Vanadium. Molybdenum is an element that increases a knife's toughness while Vanadium helps maintain a sharp knife edge for a longer period of time. High Carbon Stainless kitchen knives tend to have thicker blades and be less flexible. These kitchen knives tend to be more expensive as high carbon stainless is more costly to use. Instead of buying an entire knife set buying kitchen knives individually can allow a person to acquire better knives over time. Some examples of High Carbon Stainless Steels are 440-C, ATS-34, VG10, and S30V.
Kyocera uses a zirconia ceramic material of high quality in its ceramic kitchen knife blades. This ensures long lasting extreme sharpness of your knives. Zirconia ceramic is also used for applications in aerospace the motor and medical industries.