SAE International: This specification covers a low-alloy steel in the form of bars, forgings, and forging stock. AMS 6488 features balanced alloy content, resulting in minimal distortion during hardening.

These products have been used typically for parts requiring a steel capable of through-hardening to a minimum hardness of 50 HRC in section thicknesses up to 12 inches (305 mm) with relatively high levels of strength, fatigue resistance, ductility, and thermal stability in service from -100 degrees to +1000 degrees F (-73 degrees to +538 degrees C), but usage is not limited to such applications.

Certain design and processing procedures may cause these products to become susceptible to stress-corrosion cracking after heat treatment; SAE ARP 1110 recommends practices to minimize such conditions