K390和S590刀刃均选择三个淬火温度1100 ℃，1150 ℃，1180 ℃，相同的回火工艺（深冷和550 ℃回火三次），对热处理后的样品进行抗压强度测试。淬火温度为1180 ℃时，K390和S590刀刃的抗压强度均最高。在此温度下，K390抗压强度为3944 MPa，S590抗压强度为3827 MPa，与1100 ℃相比分别提高了19.4%、2.7%。

Three quenching temperatures of 1100 ℃, 1150 ℃ and 1180 ℃ are selected for K390 and S590 blades, and the same tempering process (cryogenic and 550 ℃ tempering for three times) is used to test the compressive strength of the samples after heat treatment. When the quenching temperature is 1180 ℃, the compressive strength of K390 and S590 blades is the highest. At this temperature, the compressive strength of K390 and S590 is 3944 MPa and 3827 MPa, which are 19.4% and 2.7% higher than 1100 ℃ respectively.