What typically characterizes the machining process of stainless steel compared to aluminum?

In the machining process, stainless steel is characterized by a lower cutting speed with greater pressure compared to aluminum. This is primarily due to the inherent properties of stainless steel, which include its higher hardness and toughness. As a result, when machining stainless steel, operators often have to use a lower cutting speed to avoid excessive tool wear and achieve better surface finishes.

This adjustment is necessary because stainless steel does not conduct heat away as efficiently as aluminum, causing the tool to heat up more quickly during machining. The increased pressure helps to maintain effective cutting action and ensures the tool is adequately engaged, which is crucial in overcoming the material's resistance.

Aluminum, being softer and more malleable, can be machined at higher speeds and feed rates without the same concerns for tool wear or overheating. This stark difference in machining characteristics between stainless steel and aluminum highlights the need for tailored approaches based on material properties.