The parking tooth with module 8.6 has a width of 12, This product is made of low carbon alloy steel. Generally, alloy steel is called alloy steel by adding other alloying elements in addition to iron and carbon. An iron carbon alloy formed by adding one or more alloying elements on the basis of ordinary carbon steel.

The hardenability of steel (see quenching) depends mainly on chemical composition and grain size. Except for cobalt and aluminum, most alloying elements can inhibit the transformation of undercooled austenite to pearlite and bainite to varying degrees after being dissolved into the solid solution, thus increasing the quantity of martensite structure, that is, improving the hardenability of steel.

Some carbide forming elements, such as vanadium, titanium, zirconium, tungsten, etc., if the formation of carbide and fixed the carbon in the steel, but will reduce hardenability, easy to coarsening elements such as manganese, can improve hardenability; Elements that refine grains, such as aluminum, reduce hardenability.