Hydrogen Sulfide Corrosion Test Chamber

The Hydrogen Sulfide Corrosion Test Chamber is a precision environmental testing instrument designed to evaluate the corrosion resistance of metals, coatings, and chemical-treated surfaces under controlled hydrogen sulfide (H₂S) gas conditions. It provides accurate control of temperature, humidity, and H₂S concentration, allowing simulation of corrosive environments to assess material durability, color change, and coating performance.

Application

(1) Testing corrosion resistance of metal and non-metal coatings.

(2) Evaluating color change resistance of metal plating and chemical treatment layers.

(3) Assessing durability of electrical products and components exposed to H₂S gas.

(4) Material quality control in automotive, aerospace, and industrial manufacturing.

(5) Research and development of protective coatings and corrosion-resistant materials.

(6) Certification and compliance testing for domestic and international standards.

(7) Laboratory evaluation of alloys, steels, copper, zinc, nickel, and painted or plated surfaces.

Standards

(1) GB/T 978.9-88 – Corrosion Test of Metal and Non-Metal Coatings Under Condensing Sulfur Dioxide.

(2) ISO 6988 – Corrosion Tests in Artificial Atmospheres – Sulfur Dioxide Tests.

(3) QB/T 3831 – Color Change Resistance Test for Metal Plating and Chemical Treatment Layers.

(4) GB 2423.20-81 – Hydrogen Sulfide Test for Electrical Products.

(5) Additional international and national standards for gas corrosion, environmental simulation, and accelerated aging tests.

Features

(1) High-precision PID microcomputer controller with 0.1°C resolution.

(2) Stable temperature control: ±0.5°C or ±2°C depending on model.

(3) Bottled gas supply system with precise H₂S concentration regulation (0.1–1% v/v).

(4) Humidity control: 93–98% RH with ±2% deviation.

(5) Titanium alloy nickel-chromium heating system with PID+SRR synchronization.

(6) Safety protections including leak detection, short-circuit protection, and over-temperature protection.

(7) Equipped with 6 V-shaped corrosion-resistant racks and 12 O-shaped test rods.

(8) Robust rotary table system allowing simultaneous testing of multiple samples.

Technical Parameters

Model	Inner Chamber Size (W×D×H)	Outer Dimensions (L×W×H)	Power Consumption (kW)	Temperature Range	Humidity Range	Gas Concentration
H2S-150	450×600×450 mm	680×1000×1050 mm	1.1	25–40°C	93–98% RH	25±5 ppm
H2S-250	600×900×500 mm	850×1420×1120 mm	1.2	25–40°C	93–98% RH	25±5 ppm
H2S-750	750×1100×500 mm	1000×1650×1320 mm	2.1	25–40°C	93–98% RH	25±5 ppm
H2S-010	850×1300×550 mm	1150×1900×1370 mm	2.2	25–40°C	93–98% RH	25±5 ppm

Accessories

(1) Gas regulators and safety valves.

(2) Sample holders: 6 V-shaped racks, 12 O-shaped test rods.

(3) Power cable and grounding cable.

(4) User manual and product qualification certificate.

(5) Optional data logging and timer extension modules.

Test Procedures

(1) Place test samples onto V-shaped racks or O-shaped rods.

(2) Insert the sample holders into the rotary table and secure the chamber.

(3) Set target temperature, humidity, and H₂S concentration on the controller.

(4) Activate fan rotation for uniform gas distribution across all samples.

(5) Run the test for the designated duration according to the selected standard.

(6) Record weight changes, color change, or corrosion effects after exposure.

(7) Repeat testing for multiple cycles or comparative studies as needed.

Maintenance Information

(1) Regularly inspect gas supply system and valves for leaks.

(2) Calibrate temperature and humidity sensors periodically.

(3) Clean chamber interior and sample holders to prevent residue build-up.

(4) Verify fan operation and rotary mechanism to ensure uniform gas distribution.

(5) Store the instrument in a dry environment and avoid direct sunlight exposure.

(6) Check electrical components, PID controller, and safety interlocks before each use.

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