What is working temperature of EN24 with heat treatment material?

EN24, also known as 4340 steel, typically has a working temperature range up to about 300°C (572°F) after appropriate heat treatment. The heat treatment process, which often includes quenching and tempering, enhances its mechanical properties, allowing it to maintain strength and toughness at elevated temperatures. However, specific applications may demand different temperature limits based on design and environmental conditions. Always consult material specifications and engineering guidelines for precise applications.