4140 Steel Guide: How to Balance Strength and Hardness?
4140 steel (domestic grade 42CrMo) is an excellent medium carbon alloy structural steel, known for its high strength, good toughness, wear resistance and hardenability. There is a close relationship between its strength and hardness, but the selection needs to be weighed according to the specific application requirements. Core Principles: Strength and hardness can usually [...]