Germany 52CrMoV4 spring steel Description: 52CrMoV4 (1.7701) after quenching and tempering mechanical properties: Tensile strength :1370-1670MPa yield strength: 1175MPa Elongation%: 6 Surface shrinkage%: - Impact energy J: - 52CrMoV4 spring steel should have excellent overall performance, such as mechanical properties (especially elastic limit, ultimate strength, yield ratio), reduced ballistic performance (ie, decreased resistance to elastic properties, also known as the sag resistance), fatigue properties, hardenability, physical chemical properties (heat resistance, low temperature, oxidation, corrosion, etc.). To meet these performance requirements, the spring steel has excellent metallurgical quality (high purity and homogeneity), good surface quality (strict control of surface defects and decarburization), the exact shape and size.