1.5mm 72A High Carbon Spring Steel Wire

1.5mm 72A steel wire, made of high-quality high-carbon steel strips as the base material, is finely processed by precision cold drawing process. With excellent dimensional accuracy and stable mechanical properties, it has become the core material for spring manufacturing in the fields of precision instruments and power tools, demonstrating reliable quality in subtleties.​ High standards of raw materials are the foundation of performance. The selected 72A high-carbon steel strips with purity of more than 99.5% are accurately detected by spectral analyzer on key elements such as carbon, manganese, and silicon to ensure that the carbon content is controlled within the optimal range of 0.70%-0.75%, and the manganese content is stable at 0.60%-0.90%, giving the steel wire a balanced strength and toughness. The strips are formed through continuous casting and rolling process, the internal metallographic structure is uniform, the spacing between pearlite sheets is controlled within 0.15μm, an…