Concise, useful reference. But use this little information-packed book as a starting point, and confirm from trusted separate source(s) if the question at hand is a serious matter for which you do not yet have a complete understanding.
For example, at page 343: "21.3 Chrome Plating 1. Chrome plating provides a fine finish for hydraulic components and provides protection against some environmental conditions. The process is well covered by technical standards such as SAE-AMS 2406H: Chromium Plating. A typical specification for a plated component is: * 800 micro inch of copper plated onto the steel. * 1000 micro inch of nickel plated onto the copper. * 20 micro inch of chrome as a top layer."
BUT TO THAT, IT WOULD BE HELPFUL IF SOMETHING LIKE THIS IS INCLUDED: 2. There can be risk of hydrogen embrittlement from electro-plating. Consider specifying (including temperature, duration, atmosphere) for bake after plating.
Not a complaint, merely a cautionary example.