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China Salt Spray Tester for Corrosion Resistance Testing - Trusted Suppliers & Factory Solutions
📋 Technical Specifications
Model |
TA-SS |
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60 |
90 |
120 |
160 |
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| Lab temp | Salt water test 35℃±1℃，corrosion resistance test 50℃±1℃ | ||||||
| Saturation bucket temp | Salt water test 47℃±1℃，corrosion resistance test 63℃±1℃ | ||||||
| PH value | Salt water test 6.5~7.2，corrosion resistance test 3.0~3.2 | ||||||
| Temp deviation | ±2℃ | ||||||
| Inner size（W*H*Dcm） | 60x40x45 | 90x50x60 | 120x50x100 | 160x50x100 | |||
| Outer size（W*H*Dcm） | 113x107x63 | 146x128x91 | 190x140x120 | 224x150x160 | |||
| Water tank capacity (L) | 15 | 25 | 40 | 60 | |||
| Spray amount (ml/h) | 1.0~2.0 | ||||||
| Mist removal method | Air compression | ||||||
| Protector | Water level controller, 3 status warning lights, 2 sets of over temperature protection switches | ||||||
| Standard accessories | One set of storage sticks, 500g bottles of NaCl reagent, one saline mixing bucket, one 80cm² standard collection cup, one 50ml measuring cylinder, and one detailed operating manual | ||||||
🧪 Test Modes & Standards
NSS
Neutral Salt Spray Test.
AASS
Acetic Acid Salt Spray Test.
Standards
Conformity Standards: ASTM B117, ISO 9227, JIS Z2371, DIN 50021
⚙️ Hardware Highlights
- 1 Box material: Uses P.V.C or P.P sheets (acid and alkali resistant, anti-aging, high-temperature resistant).
- 2 Precision nozzle: Utilizes specially designed glass nozzles (no crystalline blockage, uniform spray diffusion).
- 3 Top cover design: V-shaped or arc-shaped top cover (prevents condensate water from dripping onto the test sample).
- 4 Sealing method: Water-sealed structure.
- 5 Heating method: Steam heating method, with fast heating and uniform distribution.
🏭 Application
🔩
Surface Treatment
Electroplating, anodizing, coating spraying.
🚗
Automotive Parts
Fasteners, lamp housings, wheels.
💡
Electrical & Electronic Products
Circuit boards, enclosures, connectors.
🔑
Hardware Accessories
Locks, faucets, kitchen and bathroom supplies.
▶️ Video Display
❓ FAQ
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1. Can the salt spray testing machine conduct the cyclic corrosion test (CCT)? +If your purpose is merely to meet basic production compliance requirements or conduct simple metal coating quality inspections, the standard salt spray testing machine is the most cost-effective option available. However, if you are involved in automotive, aerospace or high-performance coating research and development and need to simulate the corrosive environment of alternating dry and wet conditions found in the real world, then a cyclic corrosion test chamber (CCT) is your ideal choice.
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2. How to calibrate the salt spray deposition rate? +1. Tools for preparation:
Use a standard funnel with a diameter of 100mm (with a collection area of approximately 80cm²) and connect it to a graduated cylinder.
2. Placement:
Place at least two collectors in the box: one close to the nozzle and one far from the nozzle. Ensure there is no sample obstruction above and no condensate dripping from the top cover is collected.
3. Test duration:
Conduct continuous spray tests for at least 16 hours (minimum of no less than 8 hours) to obtain accurate average values.
4. Criteria for judgment:
The volume of salt solution collected per hour should be between 1.0 and 2.0 ml / 80cm² / h.
5. How to adjust:
If the sedimentation rate is too low: Lower the top of the spray tower (diffusion cone) or slightly increase the intake pressure.
If the sedimentation rate is too high: Raise the top of the spray tower (diffusion cone) or slightly decrease the intake pressure. -
3. What are the differences between the salt used for testing and industrial salt? +1. Purity requirement: The standard salt spray test (such as ASTM B117) stipulates that the purity of sodium chloride (NaCl) must be ≥ 99.5%.
2. Issues with table salt: Contains iodine (which interferes with the chemical reaction and affects the test accuracy) and anti-caking agents (which can clog the nozzle).
3. Problems with common industrial salt: Contains heavy metal impurities (such as copper and nickel), which accelerate corrosion and cause the test results to deviate from the standard.
Conclusion: Chemical purity (AR grade) or higher-purity dedicated test salt must be used to ensure the authenticity and validity of the test data and to protect the nozzle of the equipment. -
4. How often should the salt solution in the tank be replaced? +It is recommended to replace the salt solution after every test cycle or at least every 7 days of continuous use. Over time, the salt concentration may change due to evaporation and absorption, affecting test accuracy. Always prepare a fresh 5% NaCl solution (by weight) using distilled or deionized water to maintain consistent test conditions and comply with standards such as ASTM B117 and ISO 9227.
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5. What maintenance is required for the salt spray test chamber? +Regular maintenance includes: cleaning the interior chamber walls and lid after each test to remove salt residue; inspecting and cleaning the glass nozzle to prevent blockage; checking the water level controller and temperature sensors for proper function; draining and rinsing the water tank periodically; and verifying the sealing condition of the water-sealed structure. Proper maintenance extends equipment lifespan and ensures reliable, repeatable test results.
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6. What is the difference between NSS and AASS salt spray tests? +NSS (Neutral Salt Spray Test) uses a 5% NaCl solution with a neutral pH of 6.5–7.2 at 35°C. It is the most common and widely used method for evaluating general corrosion resistance of coatings and metals.
AASS (Acetic Acid Salt Spray Test) adds acetic acid to the salt solution, lowering the pH to 3.0–3.2, and operates at 50°C. This creates a more aggressive corrosive environment, making it suitable for testing decorative coatings such as copper-nickel-chromium or nickel-chromium plating. AASS typically produces results faster than NSS for certain materials.