45 steel is a medium-carbon steel commonly used in the machining of mold bases.

Performance characteristics: It exhibits high strength and good toughness, offering balanced mechanical properties. The price is relatively low, and it meets the strength and rigidity requirements for mold bases under general working conditions. Its machinability is excellent, allowing it to be easily processed into various mold base components through cutting, forging, and other processes.

Application scenarios: It is suitable for manufacturing mold bases that have low requirements, bear small loads, and operate at low temperatures, such as those for small, simple molds, prototype molds, or where strict cost control is necessary.