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高速钢的红硬性随着淬火温度之增高而增强(但不可以过热),因此过去在一些资料裏都建议采用较高的淬火温度。但是在现代,当工具制造方面的技术科学已具有相当高的水平时,人们已开始全面地注意到高速钢的机械性能,这种单纯从红硬性出发的观点就必须适当加以修改了。在高速钢刀具工作时,有时会发生断裂或崩壞的现象。对於小直径(小於1～2公厘)的鑽头,断裂的情形更为常见。要使刀具在工作时不破坏,就必须提高它的机械性能。但是,如何获得优良的机械性能呢?那些因素影响着它的机械性能呢?下面是有关这问题的研讨。
The red hardness of high-speed steels increases (but not overheat) as the quenching temperature increases, so in the past some materials suggested the use of higher quenching temperatures. However, in modern times, when the technical sciences on the manufacture of tools have reached a fairly high level, people have begun to pay full attention to the mechanical properties of high-speed steels. Such a purely hard-headed view must be appropriately modified. In the high-speed steel cutting tools, sometimes fracture or collapse phenomenon. For small diameter (less than 1 to 2 mm) drill bit, the fracture is more common. To make the tool work without damage, it must improve its mechanical properties. However, how to get good mechanical properties? What factors affect the mechanical properties of it? The following is a discussion on this issue.