I. Introduction:

Corrosion tests in simulated artificial environments to compare the quality of metal materials with or without corrosion protection; suitable for rapid analysis of discontinuities, pores, and damage phenomena in organic and inorganic coatings. Used for salt spray corrosion testing on large products like antennas, outdoor LEDs, photovoltaic components, and automotive parts. Additionally, it allows for comparisons between samples coated with the same paint for quality control purposes. Salt spray testing is particularly suitable for detecting discontinuities in certain metals, organic, anodic oxidation, and conversion coatings, such as small holes and other defects.

II. Specifications:

Section 3: Execution Standards:

█Equipment Manufacturing and Performance Standards 

These standards ensure that walk-in salt spray test chambers produced by different manufacturers meet a uniform quality and performance benchmark, guaranteeing the reliability and reproducibility of test results.

1China National Standards

· GB/T 10587-2006"Technical Conditions for Salt Spray Test Chamber"

· This is the most core national standard for salt spray test chambers in China (including walk-in chambers). It specifies in detail the operating conditions, technical requirements, testing methods, inspection rules, as well as marking, packaging, and storage. It is an important standard that domestic equipment must refer to and comply with.

2International Electrotechnical Commission Standard

· IEC 60068-2-11TestingKaSalt Spray

Although primarily a testing method standard, it imposes clear requirements on the structure of the testing equipment, salt solution, and the conditions inside the chamber, thus indirectly becoming a specification that equipment manufacturers need to follow.

3Other reference standards

· Equipment typically also needs to comply with general standards for environmental testing equipment for electrical and electronic products, such asGB/T 10592-2008"Technical Conditions for High and Low Temperature Test Chambers" andGB/T 11158-2006The safety and structural requirements in the "Technical Conditions for High-Temperature Test Chambers," as walk-in salt spray chambers often integrate temperature and humidity control functions.

█Standard Test Methods Conducted Inside the Box 

This is the part that users are most concerned about, namely:"My product should be tested according to which standard?" The walk-in salt spray test chamber meets the requirements of various testing methods by providing a stable environment.

Basic Salt Spray Test Standard

1Neutral Salt Spray Test

This is the most widely used and traditional method for corrosion testing.

· International Standards:

· ISO 9227:2017"Artificial Atmosphere Corrosion Test - Salt Spray Test"

This is the most authoritative and universally recognized salt spray test standard internationally, which details...NSSNeutral Salt SprayAASS(Vinyl acetate mist) andCASSThree testing methods for copper acetate mist.

· China National Standard:

· GB/T 10125-2021Artificial Atmosphere Corrosion Test - Salt Spray Test

· This standard is equivalent in adoptionISO 9227:2017It is the latest and authoritative standard in China that aligns with international practices.

· American Standards:

· ASTM B117-19Standard Practices for Operating Salt雾 (Aerosol) Apparatus

· This is the oldest and most widely used standard in North America.ISO 9227The core parameters are generally consistent, but there may be differences in details (such as the number and location of collectors).

· German Standard:

· DIN 50021-1998Salt Spray Test

· Common standards used in Europe, particularly in Germany, are now beingISO 9227 largelyReplaced, but may still be found in some older standards.

2Acetate Mist Test

· Standard: IncludedISO 9227 AndGB/T 10125 China, referred to asAASS Testing.

· Features: By adding acetic acid to the salt solution,pHPrice reduced3.1-3.3, Corrosion rate isNSSFaster.

3Copper Accelerated Acetic Acid Fog Test

· Standard: IncludedISO 9227 AndGB/T 10125 China, known asCASS Testing.

· Features: OnAASSOn this basis, copper chloride is added to further accelerate corrosion, primarily used for rapid testing of decorative plating.

█Alternating composite salt spray test standard

Modern industry demands more rigorous testing, and mere salt spray tests no longer suffice. One significant advantage of the walk-in salt spray test chamber is its ability to"Variable composite salt spray test," which involves cycling between different environmental conditions such as salt spray, dryness, humidity, and low temperatures.

Automotive Industry:

· ISO 11997-1:2017"Test for Resistance to Cyclic Corrosion Conditions of Paints and Varnishes - Part"1Partial: Wet (Salt Fog)/Dry/Humidity >

· ISO 16701:2015"Corrosion Conditions: Artificial Atmosphere Accelerated Corrosion Testing"

· SAE J2334Automotive Industry Laboratory Cyclic Corrosion Test- North America's automotive industry widely utilizes.

· Volkswagen PV 1210、Ford CETP 00.00-L-467、GM 9540P、Chrysler SAE J2334 Waiting for the enterprise standards of various vehicle manufacturers.

Electrical & Electronic Products:

· IEC 60068-2-52:2017《TestKbSalt Spray, Alternating (Sodium Chloride Solution)

· This is the core international standard for alternating salt spray testing of electrical and electronic products, defining various severity levels.

· GB/T 2423.18-2021Electrical and Electronic Products Environmental Testing2Section: Testing MethodsKbSalt Spray, Alternating (Sodium Chloride Solution)

Equivalent to adoptingIEC 60068-2-52China's National Standard