EN9 (070M55) is a medium carbon steel widely used for general engineering applications where strength and wear resistance are required. Supplied in black flat bar form, EN9 provides a reliable and cost-effective material for machining components in batch and repeat production environments.
EN9 is a 0.50–0.60% carbon steel capable of achieving high tensile strength and surface hardness. Although EN9 steel is capable of through hardening by quenching and tempering , it is more commonly supplied in the untreated or normalised condition, making it suitable for further machining or heat treatment, depending on the application.
EN9 is widely used for components that require strength and durability without the cost of alloy steels. It is particularly suited to repetition machining where consistent material performance is essential.
