B55SiCr wire is an alloy spring steel wire. It is an alloy spring steel wire carefully forged from carbon, silicon, manganese, chromium and other elements, which makes B55SiCr wire have excellent comprehensive performance; high tensile strength enables B55SiCr wire to withstand large tensile forces without breaking, and is not prone to fatigue damage. At the same time, good elasticity can quickly restore to its original state after being stressed, ensuring the normal operation of elastic parts such as springs, and the wear resistance and impact resistance of steel enable B55SiCr wire to resist friction and impact during use, reduce wear and damage of parts, and extend its service life; excellent B55SiCr wire can not only meet the processing requirements of parts of different shapes and sizes, but also meet customers' high requirements for product quality.

Chemical element content (%)

Specification：1.00~42.00mm

Application areas: Applicable to the manufacture of spring parts in the industrial field, large and important coiled springs, parts of cold heading dies, cold drawing dies and other cold working dies, etc.; widely used in automobiles, railways, machinery and other fields.

Heat treatment specifications: 

-Quenching: Heat to 830-860℃, keep warm for a period of time and then cool in oil or air. Quenching can make the steel obtain higher hardness and strength.

-Tempering: Temper immediately after quenching, heat to 150-200℃, keep warm for 2-3 hours, and then cool in air or water. Tempering can reduce the brittleness of steel, improve its toughness and plasticity, and eliminate quenching stress, and stabilize the organization and performance of steel.

Mechanical properties:

-Tensile strength: ≥950MPa;

-Fatigue limit: ≥10MPa;

-Elongation or elongation after fracture: ≥3%;

-Hardness: ≤32HRC (Rockwell hardness).

We mainly engage in cold heading wire, wire, bar, peeled bar, and profiled bar; our products cover 11 series and more than 300 grades, and we continue to develop a variety of professional steels. We can provide all-round solutions such as cold heading finishing line manufacturing and high-precision bright bar customization, and provide one-stop procurement services and package procurement solutions for global customers. The website displays some grades. If you don’t have the grade you need, please contact us by phone or email.