1.6mm 72A High Carbon Spring Steel Wire

1.6mm 72A spring steel wire, made of high-quality high-carbon steel strips as the base material, is made by precision cold drawing process. With stable mechanical properties and strict dimensional control, it has become a reliable choice in the field of precision spring manufacturing, demonstrating excellent quality in high-precision scenarios such as instruments and tools.​ Raw material selection is the foundation of performance. The selected 72A high-carbon steel strips with purity of more than 99.5% are accurately controlled by spectral analysis technology to ensure that the carbon content is stable in the range of 0.70%-0.75%, and the manganese content is controlled 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 refined to less than 0.15μm, and there are no microscopic defects such as pores and crac…