Salt spray test is one of the environmental reliability tests that evaluates the corrosion resistance of products or metal materials by artificially simulating salt spray environmental conditions.
Salt spray test is a commonly used corrosion testing method, widely used in fields such as automobiles, electronics, electrical appliances, aerospace, ships, and construction.
Why do we need to conduct a salt spray test?
Salt spray corrosion is the most common and destructive type of atmospheric corrosion. There are countless examples of salt spray affecting products and causing losses. For example, in China, the insulation resistance of a military electrical appliance used on the coast of Hainan decreased sharply after absorbing salt spray, resulting in prolonged cleaning and drying, but it still cannot be used normally; The printed circuit board used along the coast of the Panama Canal failed within 5 months due to insulation degradation; Salt crystals are attached to the power contactor of a certain seaplane, causing an increase in resistance and circuit failure.
How to improve the salt spray corrosion resistance of products is increasingly being valued. Using laboratory salt spray testing to accelerate the corrosion process, ranking the corrosion resistance of materials, and verifying the effectiveness of new anti-corrosion materials and processes, providing experimental basis for improving product quality.
What industries and products are suitable for salt spray testing?
Salt spray test is a standardized and widely used corrosion testing method for checking the corrosion resistance of materials and surface protective materials. It is commonly used in automotive parts, power tools, household appliances, information technology equipment, medical equipment, power equipment, cable trays, building materials, wireless products, electrical accessories, and other products.
What are the common types of salt spray tests?
According to different testing requirements, salt spray testing can be divided into the following types:
|
Test name |
Liquo |
PH value |
|
Neutral salt spray test |
Use 5% NaCl solution |
6.5~7.2 |
|
Multi functional alternating corrosion test |
Use 5% NaCl solution or composite solution |
6.5~7.2 |
|
Acetic acid salt spray test |
Use a mixed solution of 5% NaCl and acetic acid |
3.1~3.3 |
|
Copper acetate accelerated salt spray test |
Use a mixed solution of 5% NaCl and CuCl2 |
3.1~3.3 |
|
Prohesion wet heat/dry cycle test |
0.05% NaCl and 0.35% (NH4) 2SO4 mixed solution |
5.0~5.4 |
The above are common types of salt spray tests, and different test types are suitable for different materials and protective materials. The specific choice of test type needs to be judged based on the actual situation.
GRGTEST salt spray test service capability
GRGTEST is one of the authoritative testing and certification service organizations with relatively complete salt spray testing capabilities in China. It is equipped with various types of salt spray testing equipment at home and abroad, and conducts neutral salt spray testing (NSS), acetic acid salt spray testing (ASS), copper acetate accelerated salt spray testing (CASS), and alternating corrosion testing for automotive parts, power tools, household appliances, information technology equipment, medical equipment, power equipment, cable trays, wireless products, electrical accessories and other products.