A Salt Spray Test Chamber (also called a salt fog test chamber) is a laboratory device used to evaluate the corrosion resistance of materials and coatings by exposing them to a controlled salt-laden mist environment. It accelerates the corrosion process so manufacturers can predict how products will perform in harsh environments.

Main Purpose

Salt spray testing is widely used to check corrosion resistance of:

• Metal parts and fasteners (bolts, screws, nuts)

• Electroplated coatings (zinc, nickel, chromium, tin)

• Painted or powder-coated surfaces

• Automotive components

• Marine hardware

• Electronic components and connectors

Common Test Standards

Many international standards specify salt spray tests, such as:

• ASTM B117 – Standard Practice for Operating Salt Spray (Fog) Apparatus

• ISO 9227 – Corrosion tests in artificial atmospheres

• JIS Z 2371 – Japanese salt spray test standard

• GB/T 10125 – Chinese salt spray test standard