Salt Spray Test Chamber: AIM Faucet

Salt Spray Test Chamber is an artificial accelerated corrosion testing equipment used to simulate marine or salt containing humid environments. It is mainly used to test the corrosion resistance of products such as metals, coatings, electroplating layers, chemical materials, etc. The following is key information about the salt spray testing machine:

1. Core principles

Salt spray corrosion: By atomizing a certain concentration of salt water (such as 5% NaCl), a salt spray environment is formed to accelerate the corrosion process on the surface of the material.

Testing standards: Common standards include ASTM B117, ISO 9227, JIS Z 2371, GB/T 10125, etc.

2. Main types

Neutral salt spray test (NSS): pH=6.5~7.2, most commonly used.

Acetate Salt Spray Test (AASS): Add acetic acid, pH≈3.1~3.3， Corrosion is faster.

Copper Accelerated Acetate Salt Spray Test (CASS): Copper chloride is added to AASS for rapid testing of electroplated parts.

Cyclic Corrosion Test (CCT): Combining multiple environmental alternations such as salt spray, dry, and humid heat, it is closer to real-life scenarios.

3. Equipment composition

Test box: made of corrosion-resistant materials such as PP plastic and PVC board.

Spray system: including salt water tank, atomizing nozzle and compressed air purification device.

Heating system: Maintain a constant temperature inside the box (usually 35 ± 2 ℃).

Control system: adjust spray volume, temperature, time and other parameters.

Collection device: Measure salt spray deposition (standard requirement 1-2ml/80cm ² · h).

4. Application Fields

Automotive industry: corrosion resistance of components and body coatings.

Electronic appliances: anti salt spray capability for PCBs, connectors, etc.

Aerospace: Verification of Metal Alloys and Surface Treatment Processes.

Building materials/electroplating: durability testing of coatings, stainless steel and other materials.