This standard establishes recommended practices for salt spray testing of metal components such as medium trucks, heavy trucks, buses, and trailers. The focus is on accelerated corrosion testing and evaluation of results, including cyclic conditions such as corrosion chemicals, drying, Humidity, and abrasion. The standard provides a variety of test procedures applicable to different vehicle parts to evaluate multiple corrosion mechanisms. Test times can be adjusted to meet different exposure requirements, taking into account aggravated conditions such as swirl/spin at joints, mechanical stress, and extreme temperatures. The standard does not address detailed descriptions of corrosion chemistry or corrosion prevention methods.