I. Introduction:

The humidity and temperature salt spray test chamber, also known as the cyclic salt spray corrosion test chamber and salt dry-wet corrosion test chamber, simulates natural conditions close to gaps in accelerated corrosion tests, replicating more commonly encountered situations in the natural environment. It subjects materials to testing under conditions several times harsher than those of the natural environment, including salt spray, drying, moisture, ambient temperature static storage, and spray, among others. Tests can be executed in any sequence or individually.

II. Specifications:

Equipment Performance and Technical Standards 

These standards specify the requirements that composite salt spray test chambers must meet in terms of manufacturing, performance, and safety, serving as the foundation for evaluating whether a device is qualified. Common equipment standards include: 

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

·China's National Standards serve as the fundamental and most general technical standards for the production and use of salt spray test chambers domestically. They specify the conditions for use, technical requirements, testing methods, and inspection rules for salt spray test chambers.

2. IEC 60068-3-5 Environmental Testing- Chapter3-5Partial: Support Documents and Guides- Temperature Test Chamber Performance Confirmation

The IEC (International Electrotechnical Commission) standards, while not specifically written for salt spray chambers, are widely referenced for their confirmation methods regarding temperature uniformity, fluctuations, and deviations, serving as a critical basis for evaluating the climatic environmental simulation capabilities of testing chambers.

3、JB/T 13209-2017 Composite Salt Spray Test Chamber

· China's machinery industry standards, specifically formulated for composite salt spray test chambers, are...GB/T 10587More specifically, it clearly specifies the technical parameters of the test chamber that can undergo alternating cycles of salt spray, dry, humid heat, and room temperature storage conditions.

●Key Equipment Specifications:

· Temperature Range: Room Temperature~+70°C or wider.

· Temperature Uniformity: The difference in temperature at various points within the box, usually required to be ≤2℃。

· Temperature Fluctuation: The up and down change of temperature at a certain point, usually required to be ≤ ±0.5℃。

· Salt雾沉降率: At1.0~2.0ml/80cm²·hBetweenGBStandard).

· Corrosion Solution Concentration: Sodium chloride solution concentration andpHValue control.

Environmental Test Method Standard

These standards specify how to conduct tests, including test conditions, cycles, sample preparation, and result evaluation. The core value of the composite salt spray test chamber lies in its ability to perform these complex cyclic corrosion testing methods.

●Please provide the Chinese content you would like translated into American English.Here are some globally recognized and widely used core testing methods and standards:

1、Automotive Industry (Most Common Field)

· Volkswagen (Volkswagen) - PV 1210

· This is a classic salt spray test standard, typically with a cycle of: Salt Spray → Dry → Wet Heat Cycles.

· Total test time can reach dozens to hundreds of cycles (such as)40Zhou/1000Simulate the corrosion conditions of automotive parts under severe environments (hours).

· Ford (Ford Motor) - CETP 00.00-L-467

· Ford's laboratory corrosion test standards utilize a multi-environmental alternating cycle test, including salt spray, drying, and static storage.

· General Motors (General Motors) - GMW 14872

· General Motors' cyclic corrosion laboratory test standard, the methods are similar.

· SAE J2334

· Developed by the Society of Automotive Engineers, it is an industry-standard laboratory cyclic corrosion test, referenced or adopted by many automakers.

· ISO 11997-1 & 2 Color paints and varnishes- Determination of resistance to cyclic corrosion conditions

· International standards, widely used for corrosion resistance evaluation in the paint industry.

2International Standard

· ASTM G85 Improved Salt Spray Testing Standard Practices

· This is one of the most important standards for the composite salt spray test method. It is based on traditional neutral salt spray (ASTM B117Based on the previous version, multiple appendices have been added, each representing an improved, more rigorous cyclic test.

AppendixA5Cyclic acidic salt spray test, commonly used in the automotive industry, simulating environments like melting snow salt.

· Additional appendices are tailored to various application scenarios.

· ISO 14993 Corrosion Test- Test under cyclic exposure to salt spray, "dry" and "wet" conditions

· This is an international standard specifically for composite salt spray testing, providing standard cyclic conditions.

· DIN 50017 Condensate Water Climate Test

Although primarily a humid heat test, its testing conditions (condensation under saturated humidity) are an important reference for the "humid heat" stage in the salt spray cycle.

· JIS D 0205 Corrosion Resistance Test Methods for Automotive Parts

· Japanese Industrial Standards, including cyclic corrosion testing.

3Traditional Salt Spray Test Standards (for comparison)

Composite salt spray test chambers can usually perform these traditional tests as well, but they do not belong to"Composite" test.

· GB/T 10125-2021 / ISO 9227:2017 Artificial Atmosphere Corrosion Test Salt Spray Test

· Including neutral salt spray testNSSAcetate Mist TestAASSAnd Copper Accelerated Acetate Mist TestCASS). These are continuous sprays, without any alternating stages such as drying or humid heat.