The as cast structure and forged structure and mechanical properties of semi-high speed steel 16Cr5D- 0.50~0.56C
0.36~0.39Mn
0.95~1.03Si
5.34~5.68Cr
0.31~0.41Ni
1.00~1.04Mo
0.29~0.30V quenched at 880~1060 ℃ and tempered at 200~750 ℃ melted by a 20 kg medium frequency induction furnace has been tested and studied. The test results showed that the optimum quenching temperature was 970~1000 ℃
the second hardening of the steel was obvious as tempered at 500 ℃
and the quenched and tempered steel had excellent comprehensive mechanical properties. Therefore the steel is a nice material for cold middle roll