A corrosion-resistant zinc coating applied over steel. Powerbrace applies hot-dip galvanizing (HDG) to our steel components, including lockrods. This provides the longest-lasting corrosion protection possible. We follow ASTM A123 and ASTM 153, which, depending upon the component, specifies a thickness of 2.2 mils to 3.9 mils. As a rule-of-thumb, galvanizing thickness of 0.1 mil provides one-year of service life (22-39 years of protections on Powerbrace parts). Note: That standard G90 steel sold by steel warehouses only has a 0.75 mil thickness (7.5 years of protection). For additional information about galvanizing, read our technical bulletin on the subject.