160 Salt Fog Test Chamber: Comprehensive Evaluation for Corrosion Resistance

160 Salt fog test chamber: The working chamber size is 160x100x50 cm,The salt spray test chamber is a testing device that artificially simulates a salt spray environment. It is mainly used to assess the salt spray corrosion resistance of materials and their protective coatings, as well as to compare the process quality of similar protective coatings. At the same time, it can also evaluate the salt spray corrosion resistance of certain products. It is suitable for salt spray corrosion tests of components, electronic components, protective coatings of metal materials, and industrial products.

Structural Features of 160 Salt Spray Test Chamber

Test Chamber: Constructed of 6mm thick grey PVC temperature-resistant and impact-resistant board, offering excellent corrosion and impact resistance.
Constant Temperature Water Bath: Also made of 6mm thick grey PVC temperature-resistant and impact-resistant board. Equipped with an auto-fill function to eliminate the inconvenience of manual water addition.
Test Chamber Cover: Made of 5mm thick transparent European-grade heat-resistant acrylic sheet, allowing easy observation of the test process.
Chemical Replenishment Tank: Concealed design with a water level gauge. Constructed of 5mm thick grey PVC impact-resistant board, integrated seamlessly with the machine's exterior for convenient chemical addition.
Test Chamber Basket Rack: Made of grey PVC temperature-resistant angle material. Freely adjustable to 15° or 30° angles to accommodate the placement requirements of different test specimens.
Saturated Air Barrel: Constructed of 2mm thick stainless steel plate. Features an auto-fill function to eliminate manual water addition. Equipped with a graduated liquid-separation tube on the exterior to measure salt spray sedimentation rate.

Application Areas

Electronics & Electrical Industry: Used to assess the reliability of electronic components, circuit boards, connectors, etc., in humid, salt-laden environments, ensuring product lifespan under harsh conditions.
Automotive Industry: Used for corrosion testing of automotive parts such as body panels, engine components, fasteners, etc., to guarantee vehicle durability under varying climatic conditions.
Aerospace: Tests the corrosion resistance and structural integrity of aerospace materials in extreme environments, ensuring the safety and reliability of aircraft.
Shipbuilding & Marine Engineering: Evaluates the corrosion conditions of ship structures and marine engineering facilities, providing a basis for material selection and protective measures.
Chemical Industry: Detects the corrosion resistance performance of chemical equipment, pipelines, valves, etc., in salt spray environments, providing safety assurance for chemical product production and storage.

Main types

Standard salt spray test chamber: Usually made of PVC or fiberglass reinforced plastic (FRP), it can conduct neutral salt spray test (NSS), acetic acid salt spray test (ASS), etc.
Cyclic salt spray test chamber: Generally made of FRP, in addition to the functions of standard salt spray test chambers, it can also perform drying, wet heat, constant temperature and humidity tests, simulating the corrosion conditions of auto parts and other products in different environments.
Walk-in salt spray test chamber: Customizable, with materials such as FRP or stainless steel, suitable for salt spray tests of large samples or batch samples.

Test Standards

ISO 9227-2022: An internationally recognized standard, it specifies three test methods: neutral salt spray (NSS), acetic acid salt spray (AASS), and copper-accelerated acetic acid salt spray (CASS).
ASTM B117-2009: A standard of the American Society for Testing and Materials, it is applicable to neutral salt spray tests, with a test temperature of 35 ± 1.1°C and a spray pressure of 0.7 - 1.4 bar.
GMW14872: A General Motors standard, it supports anhydrous heated salt spray tests, with a temperature range up to 70°C, and is suitable for cyclic corrosion tests (CCT), simulating alternating dry and wet environments.

The lifespan of a salt spray test chamber is generally between 2 to 10 years, and the specific duration is influenced by several factors. Here’s a detailed analysis:

Key Factors Affecting Lifespan

Equipment Quality
- High-quality salt spray chambers, made from premium materials and advanced manufacturing techniques, feature robust structures and stable performance. These can last 8–10 years or longer.
- Lower-quality equipment may develop faults after 2–3 years, compromising functionality.
Usage Frequency
- Frequent daily operation accelerates wear on components (e.g., spray system, heating elements, controls), potentially shortening lifespan to 3–5 years.
- Light usage (e.g., 1–2 times weekly for short durations) reduces wear, extending service life to 6–10 years.
Maintenance & Care
- Regular maintenance—such as cleaning the chamber, replacing water/lubricants, and inspecting nozzles/valves—prevents issues and extends lifespan to 5–8+ years.
- Neglecting maintenance often leads to malfunctions, reducing lifespan to 2–4 years.
Operating Environment
- Chambers placed in dry, ventilated, corrosion-free areas (away from sunlight/rain) last longer.
- Harsh environments (e.g., humidity, dust, corrosive gases) accelerate corrosion/damage, cutting lifespan to 3–5 years.

Model	DR-H304-160
Internal Size (WDH)	16001000500mm
External Size (WDH)	230013001400mm
Equipment Material	P.V.C rigid plastic plate, thickness 8mm
Sample tray	Diameter 10mm glass fiber rod, anti-rust V-shape plastic steel to make sure sample in 15~30 degree inclined
Temperature Range	Room temperature ~ 55℃
Temperature Fluctuations	≤±0.5℃
Temperature Uniformity	≤±2℃
Temperature Precision	±1℃
Spraying method	Continuous and Periodic spray type
Test Chamber Temperature	Salt Spray Method (NSS ACSS)35±1℃ Corrosion-resistant Testing Method (CASS) 50±1℃
Saturated air Barrel Temperature	Salt Spray Method (NSS ACSS)47±1℃ Corrosion-resistant Testing Method (CASS) 63±1℃
Brine Temperature	35℃±1℃
Spray Quantity	1.0~2.0 ml / 80cm2 / hr
PH value	Salt Spray Method (NSS ACSS6.5~7.2) Corrosion-resistant Testing Method(CASS)3.0~3.2
Lab Volume	800L
Brine Tank Capacity	40L
Multiple Safety Protection Devices	Current discharge protection, over pressure protection, over temperature protection, over load fuse protection
Accessories	Testing Salt / Measuring tank / Spray Nozzle x 1 set
Air source	1HP Air pump (provided by buyer)
Test criteria	ASTM B117-08, ISO 9227...

1、What is the temperature control range?
Laboratory: RT to 50℃; Pressure chamber: RT to 63℃; Humidity: ≥ 85% RH.

2、What is the standard for the spray volume?
1.0 to 2.0 ml/80cm²/h (the average value should be taken after continuous spraying for 16 hours).

3、What are the requirements for the installation environment?
The ambient temperature should be between 5 and 30℃, with a humidity of no more than 85% RH. The location should be away from heat sources and vibrations, and the ground should be flat and well-ventilated.

4、How to install the exhaust system correctly?
The exhaust pipe should extend vertically to the outside, with a length of less than 30 meters and no more than 10 elbows. It is recommended to install a "T" pipe at the end to prevent backflow.

5、 What water quality must be used?
Distilled water or deionized water (resistivity > 50 kΩ·cm) should be used for the spray and steam generator, and pure water can be used for salt water preparation.

6、How to adjust the spray pressure?
Set the intake pressure to 2 kg/cm², and the spray pressure should be stable at 1.00 ± 0.01 kgf/cm².

7、How to solve the problem of insufficient spray volume?
Check the pressure valve (2kg for intake and 1kg for spray), clean the clogged nozzle, or increase the spray volume through the atomizer.

8、Is a temperature fluctuation of ±2℃ normal in the experiment?
Yes, the equipment allows a temperature deviation of ±1℃ and a fluctuation of ±0.5℃; an initial overheat of 1-2℃ during heating is normal.

9、How to deal with nozzle blockage?
Rinse the flow channel with deionized water daily and disassemble the nozzle weekly to clean it with a 0.3mm needle.

10、What should be done before long-term shutdown?
Empty the brine tank and pipelines, and flush with a 5% nitric acid solution to prevent crystallization. Then, turn off the power and gas supply.

11、When should the air filter be replaced?
Replace the filter element once a month to prevent oil and impurities from entering the air line and affecting the stability of the spray.

12、Which international test standards are supported?
It complies with salt spray test standards such as ASTM B117, ISO 9227, and GB/T 10125, etc.

13、How to evaluate the corrosion resistance of samples?
Common methods: determination by the appearance of corrosion products (qualitative), rating determination method (corrosion area classification), or weighing method (quantitative).

14、What are the requirements for drainage after the test?
Wastewater should be treated in accordance with local environmental protection regulations (ordinary salt water is usually unrestricted), and the drainage outlet should be lower than the equipment and sealed to prevent leakage.