I. Equipment Definition and Core Principle

HAST (Highly Accelerated Stress Test), also known as a high-pressure accelerated life testing machine, is a testing device that accelerates the aging of materials or products by simulating environments (high temperature, high pressure, high humidity). Its core principle is based on accelerated aging theory: under stress conditions far exceeding conventional environments, the aging reaction rate of materials significantly increases, thereby compressing years of natural aging into days or even hours. For example, in an environment of 132°C, 3 atmospheres, and near-saturated humidity, the oxidation reaction rate of plastic components can be thousands of times faster than at room temperature.

II. Technical Parameters and Performance Indicators

1. Set temperature:  +105°C  ～ +147°C (75~100% steam humidity)

2. Humidity range: 75～100% steam humidity

3. Humidity control stability: ±3%RH

4. Operating pressure: 1.2～2.89kg (including 1atm)

5. Time range: 0 Hr ～ 999 Hr

6. Pressurization time:  0.00 Kg ～ 1.04 Kg / cm2  approx. 45 minutes

7. Temperature fluctuation uniformity: ±2°C

8. Temperature display accuracy: 0.1°C

9. Pressure fluctuation uniformity: ±0.1Kg

10. Humidity distribution uniformity: ±3%RH

Safety design:

Multiple protections: Automatic power-off for overtemperature, overpressure, water shortage, and leakage, equipped with mechanical pressure gauges and manual pressure relief valves.

Anti-condensation: Arc-shaped stainless steel inner chamber prevents condensation droplets and ensures uniform heating of samples.

Emergency pressure relief: Automatic gradual pressure reduction, exhaust, and drainage after testing to prevent sample damage from sudden pressure changes.

III. Equipment Structure and Functional Modules

Pressure vessel system:

Inner chamber: Made of SUS316# stainless steel with strong corrosion resistance, compliant with ASME safety standards.

Outer casing: Cold-rolled steel plate with anti-static coating, equipped with observation window and lighting for real-time monitoring.

Sample holder and signal terminals:

Double-layer stainless steel sample holder, supports customizable expansion (e.g., increasing layers or adjusting spacing).

Standard配備8 bias terminals (expandable to 55), supports AC/DC 125V 1A signal application, suitable for bias testing of electronic components.

Auxiliary systems:

Vacuum pump: Quickly removes air from the chamber to ensure steam purity.

Convection fan: Forces air circulation to eliminate temperature and humidity dead zones.

IV. High-Pressure Accelerated Aging Testing Machine Application Fields and Typical Scenarios

Electronics industry:

Test objects: PCB boards, IC chips, connectors, sensors, etc.

Typical case: A mobile phone manufacturer used a HAST testing machine to complete reliability verification of new waterproof materials within 72 hours, replacing traditional THB testing (85°C/85%RH/1000 hours), significantly shortening the R&D cycle.

Automotive industry:

Test objects: Battery packs, motor controllers, wiring harnesses, etc.

Typical case: A new energy vehicle company used HAST testing to simulate battery performance degradation in high-temperature and high-humidity environments, optimizing sealing design and increasing battery life by 30%.

Aerospace:

Test objects: Avionics equipment, composite materials, seals, etc.

Typical case: An aviation company used a HAST testing machine to verify the corrosion resistance of airborne electronic components in harsh environments, ensuring flight safety.

Materials science:

Test objects: Polymer materials, metal coatings, adhesives, etc.

Typical case: A research institution used HAST testing to study the degradation mechanism of new eco-friendly materials in humid and hot environments, providing data support for material improvement.

V. Equipment Advantages and Industry Value of High-Pressure Accelerated Life Testing Machine

Time efficiency: Compresses traditional years of aging testing into days, accelerating product iteration.

Cost optimization: Reduces the number of test samples and energy consumption, lowering R&D costs.

Reliability improvement: Identifies design defects through environmental simulation, reducing post-sale failures.

Standard compliance: Meets international standards such as IEC60068-2-66 and JESD22-A118, fulfilling market access requirements.

Data-driven: Integrated intelligent control system, real-time recording of test data, providing quantitative basis for product optimization.