在一定磨损条件下，中硬度钢比高硬度钢耐磨。
Under certain wear condition the wear resistance of 45 steel with medium hardness is higher than that with high hardness.
通过冷裂敏感性试验、焊接热影响区最高硬度试验及可调拘束试验，对新型铁路车辆用TCS耐蚀钢的焊接性进行了深入系统分析。
The weldability of TCS corrosion resistant stainless steel for railway wagon was investigated by cold cracking sensitivity test, HAZ maximum hardness test and varestraint test.
PCBN刀具适合各种轴承钢、工具钢、淬火钢以及各种高硬度铸铁、喷涂、硬质合金的粗精加工。
PCBN cutters are used for rough and fine processing various of bearing steel, tool steel, chilled steel, and other many kinds of cast steel and carbide of different hardness.
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