ASTM G85 Salt Spray Corrosion Testing Machine

Engineered to replicate real-world conditions, it performs continuous and cyclic corrosion tests in strict compliance with ASTM G85 standards, including cyclic salt fog, acetic acid, Prohesion, and copper-accelerated methods.

With precise control of temperature ranging from +10 ℃ to +90 ℃, salt concentration, and 1～2ml / 80cm2 · h fog density, this machine creates highly repeatable and uniform salt spray corrosion exposure, enabling engineers to quickly identify weaknesses in metals, coatings, and protective layers. Its advanced control system supports long-duration testing up to 1000+ hours.Trusted by industrial manufacturers worldwide, LIB industry's ASTM G85 machine transforms corrosion testing into a precise, performance-focused process, helping products stand the test of time in harsh environments.

ASTM G85 is the international standard for accelerated corrosion testing, refining ASTM B117 to better simulate real-world conditions. It defines multiple annexes with controlled test parameters:

Annex A1 (Cyclic Salt Fog) – Alternates wet/dry cycles at ambient–50°C with 3% NaCl and fog density 1–2 mL/h per 80 cm², revealing coating adhesion weaknesses.

Annex A2 (Acetic Acid) – Tests coated metals under acidic 3% NaCl, pH 3.1–3.3, 35–50°C, accelerating corrosion.

Annex B (Prohesion) – Cycles 30-min fog / 30-min dry air, simulating coastal or industrial environments to detect early pitting.

Annex C (Copper Accelerated Acetic Acid) – Uses 50 ppm CuCl₂, 35–50°C to evaluate copper alloys and coatings.

Following ASTM G85, engineers can predict long-term durability, identify coating or metal vulnerabilities, and ensure compliance. LIB industry's machines deliver these conditions reliably for repeatable, precise corrosion testing.

Model	SC-010		SC-016	SC-020
Internal Dimension (mm)	1300*1000*600		1600*900*720	2000*1000*800
Overall Dimension (mm)	2000*1300*1600		2300*1300*1700	2700*1300*1900
Interior Volume	780L		1280L	1800L
Temperature Range	+10 ℃ ～ +90 ℃
Temperature Fluctuation	± 0.5 ℃
Temperature Deviation	± 2.0 ℃
Humidity Range	95% ~ 98% RH
Humidity Deviation	+ 2%, - 3%
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
Air Circulation	Centrifugal wind fan
Material	Glass fiber reinforced plastics
Standard Configuration	8 round bars

 

 

 

 

Design Highlights of ASTM G85 Salt Spray Corrosion Testing Machine

 

Spray System

Number of spray towers adjusted according to chamber size, ensuring consistent environment for all samples.

Quartz nozzles resist crystallization and are easy to clean, maintaining long-term stability.

Spray flow 1–2 mL/h per 80 cm², with adjustable spray angle.

Supports all ASTM G85 test methods (A1/A2/B/C) in continuous or cyclic spray modes.

 

 

 

 

 

Air Circulation System

Optimized multi-directional airflow ensures even temperature and humidity distribution.

Eliminates dead zones and localized condensation, ensuring repeatable testing conditions.

Supports continuous and cyclic testing modes, maintaining stable environmental parameters.

 

 

 

Salt Solution Stirring System

Bubble stirring method ensures uniform pH throughout the NaCl solution.

Prevents sedimentation or concentration gradients, maintaining stable fog output for long tests.

Adjustable stirring intensity guarantees consistent performance in continuous and cyclic tests.

 

 

 

Sample Rack

Round rod + V-shaped slot design ensures stable placement of samples.

Sample angle freely adjustable to accommodate different test requirements.

In addition to standard racks, custom racks can be made for irregular-shaped samples.

Ensures uniform corrosion exposure for reliable and reproducible results.

 

Controller

7-inch color touchscreen with intuitive interface.

Programmable multi-step test profiles for temperature, humidity, and spray cycles.

Real-time monitoring and data logging for long-term test analysis.

Remote control via Ethernet/USB, enabling supervision of long-duration tests.

 

Salt Spray Testing Insights for Reliable Corrosion Evaluation

 

 

Q1: What types of corrosion environments can the salt spray chamber simulate?

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A: It can simulate cyclic salt fog (A1), acetic acid salt spray (A2), Prohesion (B), and copper-accelerated acetic acid (C), covering a wide range of real-world corrosive conditions.

Q2: Can LIB Industry provide industry-grade salt solution?

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A: Yes, LIB Industry can supply high-purity NaCl salt and guidance to maintain uniform concentration and pH for reliable testing.

Q3: Is the spray tower height adjustable?

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A: Yes, adjusting the conical disperser changes spray intensity: raising increases salt deposition, lowering reduces it, allowing precise control of sample exposure.

 

 

options

 

Salt

Air source

Custom sample holder

nozzle

 

Ensure Product Durability Under Harsh Salt Spray Corrosion Conditions

Accelerate product development, guarantee compliance with international corrosion standards, and confidently deliver long-lasting, corrosion-resistant components. Contact LIB industry today at sales@libtestchamber.com to customize your ASTM G85 Salt Spray Corrosion Testing Machine. Receive a tailored solution and quotation within 1–3 hours.