First: Carbon elements Only from the amount of carbon can be divided into low-carbon steel, medium carbon steel and high steel, then carbon in the steel in the end what role? The most obvious is how much carbon affects the strength of steel, high carbon steel plasticity and toughness than low carbon steel is much lower, and the content of the steel is higher, the solderability will be reduced, That is to say, its heat treatment properties will be affected.
Second: Manganese elements On the one hand, it plays the role of improving the strength of steel, like carbon, on the other hand, its presence can make the surface quality of steel more beautiful, so some steel screw surfaces may be related to the content of manganese elements of the material if it is too rough. But the content of manganese is also specified, too high words will reduce the extension of steel performance.
Third: Nickel elements. Its main role is to enhance the steel on the atmosphere of corrosive substances and other resistance, at the same time, its presence can also ensure that the steel screws in the heat treatment of the effect is more obvious.
IV: Chromium elements We may be unfamiliar with this element, but it also has a relatively large role, if the steel screws used in the environment is high temperature occasions, then chromium can help Dongguan screws in the high temperature environment still has a relatively high strength. Strength degradation is not caused by high temperatures.
V: Silicon elements Mainly in order to ensure that steel Dongguan screws can have a relatively stable strength, but the use of silicon content must have a clear provisions, the appropriate amount can not only ensure strength but also improve the toughness of steel parts. and excess can backfire.