Difference between different materials of Rail shoulder

QT500-7, QT450-10 and QT400-15 represent ductile iron with tensile strength of 500MPa, 450MPa and 400MPa, respectively. These materials have higher strength and can withstand greater pressure and impact.

ductile iron has good wear resistance, suitable for long-term friction and wear occasions.

ductile iron has a certain resistance to general corrosive media, but additional protective measures may be required in harsh corrosive environments.

ductile iron has high strength and wear resistance, while the cost is relatively low, so it is widely used in rail shoulder manufacturing.