Why Bother to Chrome Plate Your Screws?

摘要

Chrome plating adds only about 10% to the cost of a typical screw and it provides so many benefits with almost no performance disadvantages. Yet many processors opt not to go with such screws. There are two basic kinds of chrome plating. That which is used on an automobile bumper, for example, is called decorative plating and is relatively soft. The kind used for screws is called hard chrome or industrial chrome. Hard chrome has a hardness of 65-69 Rc, which is equal to the hardest tool steels.