A thermal shock test chamber is a laboratory testing device used to evaluate the adaptability and reliability of materials or products under rapid temperature changes. The chamber is equipped with two independent and controllable zones: a high-temperature zone and a low-temperature zone. Test samples can be automatically and rapidly transferred between the two zones via a movable basket or airflow switching system to achieve instant thermal shock.
Unlike traditional environmental chambers that adjust temperature gradually, thermal shock chambers provide instant and extreme temperature changes for test samples, allowing products to undergo rapid temperature shifts without delay and truly simulate extreme thermal shock environments in actual applications.
Thermal shock test chambers play a critical role in helping products meet international standards and obtain relevant certifications. Manufacturers widely use these chambers to verify compliance with domestic and international standards such as IEC, MIL‑STD, and ASTM, all of which clearly require reliability testing under extreme high and low temperature conditions.
KOMEG TST‑500A Thermal Shock Test Chamber
Technical Specifications
Structural Design
Two-zone vertical lift basket structure. The test basket automatically moves between the high-temperature and low-temperature zones to achieve rapid thermal shock. The compact structure saves floor space.
Door Design
Double-door structure for easy loading and unloading of large-sized or multiple samples. (Note: cost is higher than single-door models.)
Core Advantages
High Efficiency & Stability: Supports more than 1000 consecutive test cycles
Intelligent Control: Independent and precise temperature control with automatic stabilization
Energy Saving: Intelligent adjustment of heating and cooling output power
Safe & Reliable: Multiple safety protection systems
Key Specifications (Model TST‑500A)
Nominal Internal Volume: Approx. 500 liters (calculated from internal dimensions)
Basket/Inner Chamber (W×H×D): 900 × 700 × 800 mm
External Dimensions (W×H×D): 2025 × 2685 × 2740 mm
Performance Parameters
High-Temperature Zone
Temperature Range: +60°C ～ +200°C
Heating Time: From ambient temperature to +200°C in approx. 30 minutes
Low-Temperature Zone
Temperature Range: 0°C ～ -40°C (Type A)
Cooling Time: From ambient temperature to -70°C in approx. 60 minutes
Test Zone (Inside Basket)
Thermal Shock Range: -40°C ～ +150°C
Temperature Uniformity: ≤ ±2.0°C
Temperature Fluctuation: ≤ ±0.5°C
Temperature Deviation: ±2.0°C
Transition & Recovery Performance
Basket Transfer Time: ≤ 10 seconds
Temperature Recovery Time: ≤ 5 minutes
Power Supply: 380V AC
Thermal Shock Test Chamber – Price Guide
The price of a thermal shock test chamber varies greatly due to factors such as size, technical performance, temperature range, and industry certifications. There are three main categories on the market: entry-level models, large-capacity high-performance models, and high-end fully automated systems for aerospace and defense applications.
Main factors affecting price:
Temperature Range
Wider temperature ranges (e.g., -75°C ～ +220°C) demand higher-performance insulation, refrigeration, and heating systems, resulting in higher costs and selling prices.
Temperature Transition Speed
Faster switching between high and low temperature zones requires more precise control systems and structural design. Models capable of instant thermal shock are more expensive.
Chamber Size
Small chambers for electronic components are more economical. Large walk-in chambers for automotive parts and big components cost more due to complex structure and high energy consumption.
Industry Standard Certifications
Equipment complying with international authoritative standards such as MIL‑STD‑883, IEC 60068, and JEDEC has higher precision and complete certifications, thus commanding higher prices.
Additional Functions & Configurations
The following configurations increase equipment cost:
Advanced data acquisition and recording systems
Factory automation interfaces and linkage control
Enhanced safety protection devices
Customized structures and functions
High-efficiency energy-saving designs (higher initial investment, lower long-term operating costs)
Users can select the most cost-effective solution by balancing the above factors with their actual testing requirements.
Thermal Shock Test – Testing Methodology
Thermal shock testing alternately exposes samples to high and low temperatures according to preset programs, complying with standards such as MIL‑STD‑202 (military electronics), IEC 60068 (electronic components), and JEDEC JESD22 (semiconductor devices).
Standard Testing Procedure:
Sample Loading
Place samples in the test basket with proper spacing to ensure uniform airflow circulation.
Temperature Cycling
The chamber automatically transfers samples rapidly between high and low temperature zones, or achieves instant thermal shock via airflow switching.
Cycle Duration
Each cycle includes a high-temperature exposure phase and a low-temperature exposure phase, lasting from several minutes to over an hour depending on standard requirements.
Monitoring & Control
Sensors monitor temperature in real time and record data automatically. Parameters such as heating rate, dwell time, and cycle count are programmable.
Result Evaluation
Inspect samples for visual damage (cracking, deformation, coating peeling, etc.) and internal defects (such as microstructural changes) to evaluate reliability.
Thermal shock test chambers are core equipment in modern reliability testing systems, helping manufacturers effectively evaluate products’ ability to resist extreme thermal stress. With increasing demand for durability and stability across industries, these chambers have become essential for reliability verification of key components.
Although price depends on temperature range, transition speed, volume, and certifications, the investment significantly reduces field failure risks, after-sales costs, and brand reputation damage in the long run.
For buyers, fully understanding current and future testing needs is essential.
KOMEG is a professional and reliable manufacturer and supplier of thermal shock test chambers, committed to providing high-performance, high-stability environmental testing equipment for global industries.
