Effect of Tempering on Microstructure and Properties of New C Grade Link-chain Steel
A series of tempering experiments were carried out at 300 ℃ , 420 ℃ , 500 ℃ and 60 0 ℃ and the mechanical properties were studied. The effects of tempering temperature on properties of quenched link-chain steel were studied. The results show that good comprehensive mechanical properties and impact toughness at room temperature can be achieved when tempered at about 400℃, which can meet the requirements of C grade link-chain steel.