51CrV4

51CrV4 is a high-quality, alloyed spring steel known for its excellent spring properties and high tensile strength. It can withstand repeated deformation or compression without permanent deformation, making it suitable for various spring types.

51CrV4 offers high tensile strength, typically in the range of 900 to 1100 megapascal (MPa), depending on heat treatment and other factors. This high strength is essential for spring applications.

To optimize its properties, 51CrV4 often undergoes heat treatment processes, such as quenching and tempering. This process helps achieve the desired hardness and spring properties. It is important to bear in mind that the brittleness of the steel becomes higher after hardening. Therefore, any processing, such as bending, should be done before hardening is performed. Thin material can sometimes be bent in the hardened state, but some consideration must be given to the fact that the material may spring back.

Used for details where medium hardness, strength and toughness are required. Typical areas of use are axles, connecting rods, gears, piston rods. 51CrV4 is also commonly found in automotive components such as leaf springs and spiral springs. Can be hardened harder than Ck75. Working temperature from -40 to 225 °C