Because of the difference in chemical composition between the two, the former is not necessarily resistant to corrosion by chemical media, while the latter is usually stainless. The corrosion resistance of detachable high hardness force transfer joints depends mainly on the alloying elements contained in the steel. Chromium is the basic element that makes detachable high hardness force transfer joints corrosion resistant.
The mechanism of rust prevention of detachable high hardness force transfer joints is that the alloying elements form a dense oxide film, which blocks the touch of oxygen and prevents continued oxidation. The surface smoothness and flatness of the detachable high hardness force transfer joint square tube can be judged by observation. If the surface of the detachable high hardness force transfer joint square tube is relatively flat.
Removable high hardness force transfer joint products, especially removable high hardness force transfer joint strips, are in most cases processed in factories by using punching machines for stamping products. Usually hardnesses below 1/2 are utilized for stretching and bending, and hardnesses above 1/2 hardening are straight punched. When the chromium content in steel reaches about 1.2%, chromium and oxygen in the corrosive medium act to form a very thin oxide film (self-passivation film) on the surface of the steel, which can prevent further corrosion of the steel substrate.
