I. Introduction:

Salt spray tester is a device that simulates a diffused system composed of tiny salt-containing droplets in the atmosphere, used to test the corrosion resistance of products after various surface treatments such as painting, coating, electroplating, cathodic treatment, and rust preventive oil on materials. It is widely applied in salt spray corrosion tests for electronics, electrical appliances, automobiles, motorcycles, hardware, plastics, FPC flexible boards, electroplated products, and more.

II. Specifications:

The following meet the execution standards: 

Salt雾test chamber's own equipment technical standards

Manufacturing, performance, safety, and calibration requirements for salt spray test chambers, ensuring equipment from different manufacturers operates under uniform and reliable conditions. The core objective is to guarantee the repeatability and comparability of test results.

Primary International/National equipment standards include:

1、GB/T 10587-2006"Salt Spray Test Chamber Technical Conditions"

· This is the Chinese National Standard, the authoritative technical specification for the salt spray test chamber equipment itself. It specifies in detail the structure, materials, temperature uniformity, sedimentation amount, and salt mist particle size of the key technical parameters.

2、IEC 60068-2-11Environmental Testing -2-11Section: TestKaSalt Spray

The International Electrotechnical Commission standards, although primarily a test method standard, its requirements for testing equipment (salt spray chamber) are widely regarded as the design and verification benchmark for the equipment.

3、ASTM B117 - Standard Practice for Operating Salt Spray (Fog) Apparatus

· ASTM International standards, the most widely used salt spray test method globally. It clearly specifies the requirements for the structure, spray system, and temperature control in the "Equipment" section, which is a guideline that equipment manufacturers must adhere to.

4、ISO 9227"Artificial Atmosphere Corrosion Test - Salt Spray Test"

ISO standards, withASTM B117Similarly, it serves as both a method standard and includes detailed equipment specifications. Commonly used in projects in Europe and many international ones.

Standard test method in a salt spray box

These standards specify how to conduct specific corrosion tests, including sample preparation, solution preparation, testing cycles, and result evaluation. Users select different testing methods based on the industry and purpose of their products.

The most common types of salt spray tests and their corresponding standards:

1Neutral Salt Spray Test

· Standard Number:ASTM B117, ISO 9227-NSS, GB/T 10125-2021

· Features: Most basic and commonly used test. Use5%Sodium chloride solutionpHValue adjusted to neutral6.5~7.2), Test temperature is generally35°C。

· Application: Widely used for rapid corrosion resistance identification of metals and their alloys, metal coatings, organic coatings, etc.

2Acetate Mist Test

· Standard Number:ISO 9227-AASS, ASTM G85-Annex A1, GB/T 10125-2021

· Features: OnNSSOn the basis of the test, by adding glacial acetic acid to the collected liquid,pHValue reduced to approximately3.1~3.3Corrosion rate compared toNSSTest faster.

· Application: Primarily used for copper+Nickel+Chrome or Nickel+Chrome and other decorative coatings are also used in accelerated corrosion tests for aluminum alloys.

3Copper Accelerated Acetate Fume Test

· Standard Number:ISO 9227-CASS, ASTM B368, GB/T 10125-2021

· Features: OnAASSOn the basis of the test, copper chloride is then added to further accelerate corrosion. The test temperature is generally...50°CThis is the one with the fastest corrosion rate among all the salt spray tests.

· Application: Primarily used for copper+Nickel+Chrome or Nickel Plating+Chromium plating undergoes rapid, stringent quality inspections.

4Cyclic Corrosion Test

· This is a more advanced testing concept that encompasses not only salt spray, but also stages like drying, moistening, and condensation, more accurately simulating the wet and dry cycles of the natural environment.

· Standard Specifications:

Automotive Industry:SAE J2333, GM 9540P, VOLVO VCS 1027,1491, Ford CETP 00.00-L-467

· General Standards:ASTM G85, ISO 11997-1, GB/T 20853 / 20854China Metal Coating Cyclic Corrosion Test Standard

· The results of the cyclic test correlate much better with actual outdoor corrosion than traditional continuous salt spray tests.