In coastal areas, along salt-treated roads, or in industrial environments, product failures are often not caused by design flaws but by corrosion. Rust not only affects the appearance of metal components but also leads to functional failures, loose parts, and increased warranty claims. These hidden costs are often more significant than production costs and pose a long-term risk to brand reputation and competitiveness.
To tackle this challenge, the IEC 60068-2-52 cyclic salt mist test has become the industry benchmark for assessing corrosion resistance. Unlike traditional static salt spray tests, which provide a basic corrosion simulation, the cyclic salt mist test replicates real-world operating conditions with alternating wet, dry, and humid phases. This standard ensures that manufacturers can validate the corrosion resistance of products before they reach the market, reducing post-sale failures and enhancing product reliability.
| Test Type | Simulation Target | Key Feature |
|---|---|---|
| Ka (Continuous Salt Fog) | Basic corrosion environment | Constant salt fog; cannot simulate wet-dry cycles |
| Kb (Cyclic Salt Mist) | Real operating conditions | Automatic spray → humid → dry cycles, simulating coastal, industrial, or road environments |
Spray Stage: Salt solution deposits on metal surfaces, forming the initial corrosion environment.
Humid Stage: High humidity accelerates electrochemical corrosion, simulating natural environmental stress.
Dry/Storage Stage: Salt crystallizes on surfaces, creating physical stress on coatings to test durability.
Severity levels depend on application: automotive chassis components often require Level 3–6, while coastal photovoltaic modules may require Level 6–7. Key test parameters include temperature fluctuation ±2°C, salt concentration 5±1% NaCl, and deposition rate 1–5 μm/h.
LIB industry cyclic salt mist chambers support full severity levels, ensuring precise compliance with IEC 60068-2-52 and reliable, repeatable test results for all types of products.
A salt spray chamber is a laboratory device designed to evaluate the corrosion resistance of products under simulated salt fog conditions. By combining spray, humidity, and drying cycles, it replicates the environmental challenges that components face in coastal, salt-exposed, or industrial settings.
Main purposes:
Predict product lifespan in corrosive environments
Verify the effectiveness of protective coatings or anti-corrosion treatments
Identify potential design flaws early, reducing warranty claims and recalls
To meet diverse industry needs, LIB offers multiple types of salt spray chambers:
Compliant with IEC 60068-2-52
Automatic spray → humid → dry cycles
Ideal for automotive chassis components, outdoor electronic base stations, and coastal photovoltaic modules
Designed for Ka (continuous salt fog) testing
Suitable for basic corrosion performance checks or quality screening
Compact, easy to operate, and cost-effective
Designed for environments with sulfur contamination, such as industrial atmospheres or coal regions
Simulates SO₂ corrosion combined with salt spray cycles
Perfect for electronics, metals, and outdoor facility corrosion resistance testing
Classify | Type 1 | Type 2 | Type 3 |
Name | Salt Spray Test Chamber | Salt Cyclic Corrosion Test Chamber | Salt and SO₂ Corrosion Test Chamber |
Model | S-150, S-250, S-750 | SC-010, SC-016, SC-020 | SSC-010, SSC-016, SSC-020 |
Test Standards | ASTM B117, ISO 9227 (NSS, AASS, CASS) | ASTM B117, ISO 9227, IEC 60068-2-52 | ASTM B117, ISO 9227,ASTM G85 |
Function | Salt fog spray; Temp (Ambient ~ +60℃) | Salt fog spray; Temp (+10℃ ~ +90℃); Humid (30% ~ 98% RH) | Salt fog spray; Temp (+10℃ ~ +90℃); Humid (30% ~ 98% RH); SO₂ gas |
Model | SC-010 | SC-016 | SC-020 |
Internal dimensions (mm) | 1300*1000*600 | 1600*900*720 | 2000*1000*800 |
Overall dimensions (mm) | 2000*1300*1600 | 2300*1300*1700 | 2700*1300*1900 |
Interior Volume (L) | 780 | 1280 | 1800 |
Temperature Range | +10 ℃ ～ +90 ℃ | ||
Humidity Range | 30% ~ 98% RH | ||
Salt Fog Deposition | 1～2ml / 80cm2 · h | ||
Cooling system | Mechanical compression refrigeration system | ||
Water supply system | Water purification system | ||
Air Preheating | Saturated air barrel (31Liter) | ||
Spraying System | Atomizer tower and Spray nozzles | ||
Salt Fog Collected | Fog collector and fog measure cylinder | ||
Controller | Programmable color LCD touch screen controller, Ethernet connection | ||
Safety Device | Humidifier Dry-combustion Protection; Over-temperature Protection; Over-current Protection; Water Shortage Protection; Earth leakage Protection | ||
Material | Glass fiber reinforced plastics | ||
Standard Configuration | 8 round bars | ||
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| Corrosion-Resisitant Workroom | Modular grooves are used for holding samples |
salt spray tower |
cylinder |
spray collector |
Strict compliance with IEC 60068-2-52:
Spray: 35±2°C, humidity ≥95% RH
Humid: 50–60°C, humidity 95% RH
Dry: 25–30°C, humidity ≤60% RH
LIB industry chambers use PID intelligent feedback systems to maintain real-time adjustments. Cycle response is under one minute, ensuring each test stage meets standard requirements. Remote monitoring and automatic report generation provide full data transparency.
One-touch start automatically executes spray → humid → dry sequences
Auto-drain and drying functions prevent secondary contamination
Customizable cycles allow for short-term high-intensity or long-term light corrosion simulations
Built-in safety features include over-temperature and over-pressure protection as well as leakage prevention
Tower-style spray design with multiple nozzles ensures full chamber coverage
Eliminates dead zones to guarantee consistent test results
Adjustable deposition rate: 1–5 μm/h, adaptable for different testing requirements
Corrosion-resistant materials: reinforced PP or fiberglass
High-temperature tolerance for extended humid cycles
Smooth interior walls prevent salt accumulation
Continuous operation 24/7 reduces maintenance and downtime
Multiple chamber sizes from desktop to large component testing
Remote control and data logging allow program saving, historical comparison, and automatic report generation
Optional enhancements: network monitoring, NaCl concentration adjustment, extended temperature/humidity curve simulation
LIB industry chambers are used by over 100 companies worldwide
Applications include automotive, electronics, renewable energy, marine, and industrial sectors
High reliability and low maintenance ensure peace of mind for long-term testing program
Adhering to IEC 60068-2-52 cyclic salt mist testing is more than obtaining a certificate—it is about lowering post-sale costs and increasing brand value. By simulating real-world corrosive conditions, products can be validated before market release, allowing manufacturers to detect potential issues early and ensure reliability is built into every design.
In IEC 60068-2-52 cyclic salt mist tests, preventing salt spray leakage is critical for laboratory safety and test accuracy.
LIB industry salt spray test equipment uses one-piece molded fiberglass (FRP) construction, offering excellent corrosion resistance and long-term sealing stability.
The testing system is also designed with a water-sealed groove structure. During cyclic salt spray and salt mist testing, adding water to the sealing channel forms an effective barrier, preventing salt mist leakage and maintaining a clean, controlled test environment.
Yes. All LIB industry cyclic salt mist test systems are equipped with standard dry-burn protection in the saturation tank.
When abnormal heating or low water levels are detected, the system automatically stops heating, preventing damage and ensuring safe, continuous operation during long-duration IEC 60068-2-52 testing.
Yes. For improved automation and safety, the manual transparent cover can be upgraded to a pneumatic fiberglass cover.
LIB industry supports non-standard customization for cyclic salt mist test equipment, allowing users to optimize operation based on specific IEC 60068-2-52 severity levels and testing workflows.
In cyclic salt spray testing, heating is mainly concentrated at the bottom of the test zone, so mild surface warmth is normal.
Through repeated validation, the external surface temperature of LIB industry salt spray test equipment remains below 45°C, meeting laboratory safety requirements.
To further reduce surface temperature:
Keep the laboratory dry and well ventilated
Use fiberglass housing, which withstands temperatures up to 110°C, ensuring stability even under high-severity cyclic corrosion tests
Routine maintenance helps ensure accurate and repeatable cyclic salt mist test results. Recommended practices include:
Cleaning spray nozzles and the test area regularly to prevent salt crystallization
Replacing water in the saturation tank periodically to maintain humidity stability
Removing dust from electrical components to ensure long-term operational safety
The sample racks are made of resin fiberglass (FRP), offering:
Excellent resistance to salt mist and corrosive environments
High mechanical strength for supporting test specimens
Lightweight structure for easy handling and cleaning
This material is ideal for long-term cyclic salt mist and salt spray testing.
Contact LIB industry for a customized corrosion testing solution, including cyclic, basic salt spray, and SO₂ salt mist testing.
We provide professional technical consultation, customized configurations, on-site installation and training, a 3-year warranty, lifetime technical support, and fast English-speaking after-sales service—ensuring reliable performance throughout the entire equipment lifecycle.
Request your technical proposal today at inquiry@libtestchamber.com.
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