I. Introduction:

Corrosion tests in simulated artificial environments, a method 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 components such as antennas, outdoor LEDs, photovoltaic panels, and automobiles. Additionally, it allows for comparison between samples coated with the same paint for quality control purposes. Salt spray tests are particularly suitable for detecting discontinuities in certain metals, organic, anodic oxide, 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 Standard

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

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

2IEC Standard

· IEC 60068-2-11TestingKaSalt Spray

Although it is primarily a standard for testing methods, it clearly specifies requirements for the structure of testing equipment, salt solutions, and internal conditions of the chamber, thereby indirectly becoming a norm that equipment manufacturers need to follow.

3Other reference standards

· Equipment typically must comply with general environmental testing equipment standards for electrical and electronic products, such as...GB/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 typically integrate temperature and humidity control functions.

█Standard Test Methods Conducted Inside the Box 

This is the part that users are most concerned about, that is, "What standards should my products be tested against?" 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 and traditionally used corrosion testing method.

· International Standards:

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

· This is the most authoritative and universally accepted salt spray test standard internationally, which specifies in detailNSSNeutral Salt SprayAASS(Vinyl acetate mist) andCASSThree testing methods for copper acetate mist.

· China National Standards:

· GB/T 10125-2021"Artificial 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) Equipment

· This is the oldest and most widely used standard in the North American region.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

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

2Acetate Mist Test

· Standard: Included inISO 9227 AndGB/T 10125 In Chinese, it is calledAASS Testing.

· Features: By adding acetic acid to the salt solution,pHValue reduced3.1-3.3, Corrosion rate is compared toNSSFaster.

3Copper Accelerated Acetic Acid雾试验

· Standard: Included inISO 9227 AndGB/T 10125 In Chinese, it is calledCASS Test.

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

█AC Salt Spray Test Standard

Modern industry's requirements for testing are increasingly high, and mere salt spray testing no longer suffices. One major advantage of the walk-in salt spray test chamber is that it can achieve"Variable composite salt spray test," which involves cycling between different environmental conditions such as salt spray, dryness, humidity, and low temperatures.

Automotive Industry:

· ISO 11997-1:2017Determination of Resistance to Cyclic Corrosion Conditions for Paints and Varnishes1Part: Wet (Salt Spray)/Dry/Humidity >

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

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

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

Electrical and electronic products:

· IEC 60068-2-52:2017TestKbSalt 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 2423.18-2021"Environmental Testing for Electrical and Electronic Products - Part"2Partial: Test Method TestKbSalt Spray, Alternating (Sodium Chloride Solution)

Equivalent to usingIEC 60068-2-52China's National Standards.