Material Requirements
The material of the brake disc adopts my country's gray cast iron 250 standard, referred to as HT250, which is equivalent to the American G3000 standard. The requirements for the three main elements of the chemical composition are: C: 3.1∽3.4 Si: 1.9∽2.3 Mn: 0.6∽0.9. Mechanical performance requirements: tensile strength>=206MPa, bending strength>=1000MPa, deflection>=5.1mm, hardness requirements between: 187∽241HBS.
