070M55 is a medium-carbon steel that contains approximately 0.55% carbon and small amounts of other elements such as manganese, silicon, & sulphur.
It is also sometimes referred to as EN9 steel, a British standard designation for this type of steel. 070M55 steel offers a balance of strength, toughness, and wear resistance, making it a popular choice for various automotive, engineering, and construction applications.
- High tensile strength
- Relatively easy to machine
- High wear resistance
- High surface hardness
As a medium carbon steel, 070M55 has a good balance of strength and toughness. The exact strength of the steel will depend on the heat treatment condition and the specific mechanical properties required for the intended application. In its normalised condition, 070M55 typically has a tensile strength of around 700-850 MPa (101-123 ksi) and yield strength of about 450-650 MPa (65-94 ksi). Heat treatment processes such as quenching and tempering can further improve these values.
Chemical Composition (weight, %)