Adobe Stock Images | By Funtay Different types of concrete wedge anchors are manufactured for use in different applications. The only differences between the types of concrete wedge anchors are the material that they are made from and the plating or coating that is used for improving the corrosive resistance of the steel. Carbon Steel – the carbon steel concrete wedge anchor comes with either zinc plating for indoor applications where moisture is not present or hot-dipped galvanized coating for outdoor applications where moisture may be present. Rule of Thumb: The larger the diameter; the better the holding value. Stainless Steel 303/304 – different manufacturers use either the 303 or 304 stainless steel for their concrete wedge anchors. They are used in applications where moisture is present or where the application is submerged in water.