Shanxi, Xinjiang harmony Machinery Co. Share: Parts tensile strength requirements: a minimum tensile strength of the brake disc 210Mpa; tensile strength must use 30mm diameter ball test. Cast test bars at approximately the same temperature must cast brake disc, if the tensile test bars obtained by Intertek brake discs, determine the tensile strength of the tensile test bars can guarantee compliance with the requirements of the above disc brake . Brinell Hardness: Hardness must use 10 mm ball and come under 3000kg load. Microstructure: Graphite: mainly by flake graphite machining brake disc, A class of at least 85% of the price of the brake disc, containing a small amount of Class C and Class D. 3-5 grade graphite length (6-25mm). Substrate: mainly composed of pearlite brake disc, at most 90%, with not more than 10% ferrite and less than 1% of the carbides. Chemical Composition: C: 3.1-3.4%; Si: 1.90-2.30%; Mn: 0.60-0.90%; P: 0.15% MAX; S: 0.15% MAX. Shanxi, Xinjiang harmony Machinery Co. Share: bi-metal casting parts requirements: When casting to avoid as much as possible with less cooling device must be filled with molten steel flange. Double Metal Casting: Casting avoid or when used as a cooling device must be filled with molten steel flange. Double Metal Casting: Casting avoid or when used as a cooling device must be filled with molten steel flange. Intertek brake discs | Brake discs | harmony machinery provided by Shanxi, Xinjiang Machinery Co. harmony. Shanxi, Xinjiang harmony Machinery Co., Ltd. (www.xianghemc.com/) strong, credible, Shanxi Yuncheng machining industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead peaceful mechanical and you work into the brilliant, for a better future!