Low, Medium, High Carbon Steels, Which Is Proper?

The gear teeth bear in different forms of damages under severe working conditions, which is the basis for determining the gear strength measure criteria, the choice of materials and heat treatment.

1. the gear teeth are easy to break under the shock loads, therefore the materials of good toughness is preferred, to choose low carbon steel through carburizing and quenching.

2. For high-speed closed transmission, the gear surface of automotive shift system parts is easy to pitting, it should choose the tooth surface materials of good hardness, such as the medium carbon steel through surface quenching.

3. For low-speed loading, the gear is easy break, pitting or wear. Thereby it should use materials with superior comprehensive mechanical properties like good mechanical strength and high tooth surface hardness, it can choose medium carbon steels through quenching and tempering.