What is the difference between allloy 30CrMo and 35CrMo?

The difference between materials 30CrMo and 35CrMo alloy is the difference in carbon content. These two alloy steel materials are medium-tempered and tempered steels, which have good hardenability. 30 and 35 are values that indicate the content of carbon. The higher the value is, the higher the strength is, but the worse the toughness.

35CrMo alloy is characterized by surface hardening hardness HRC40-50, high strength, high toughness, high hardenability, and it can be used for large cross-section forgings.