Multiobjective Optimization for Forming Process Parameters of Ultrahigh Strength Steel BR1500HS

Table 4

Hardness of BR1500HS at different cooling rates.

No.	Cooling rate (°C.s^−1)	Hardness (HRC)
1	20	42.3
2	30	45.8
3	40	50.2
4	50	51.3
5	70	52.1
6	100	52.5