Bright Bar, Steel Round Bar,hard Chrome Plated Steel Rod Product Description Product description S45C The bar is processed with precision center-less grinding and hard chrome plating, both abrasion proof and corrosion proof. This accuracy meets the international standard. S55C High carbon raw material which is treated with high frequency, processed with precision center-less grinding and hard chrome plation, both abrasion proof and corrosion proof. SUJ-2 Carbon and Cr-alloy are impact proof and abrasion proof, pliable yet strong. It is stable with less deformation after heat treatment. The accuracy meets the international standard.