The HDT & Vicat Tester is a dual-function thermal property testing system used to determine the Heat Deflection Temperature (HDT) and Vicat Softening Point (VSP) of plastic materials. It evaluates a material’s ability to withstand load under elevated temperatures, making it essential for plastic product design, resin quality control, and polymer research laboratories.
With advanced digital controls, precise displacement sensors, and stable temperature ramping, this tester provides high repeatability, accurate temperature measurement, and full compliance with international test standards.
⭐ Key Features
- Dual testing capability: HDT & Vicat
- High-precision temperature control system
- Digital displacement measurement
- Uniform oil bath heating with PID regulation
- Supports multiple test stations (1–3 positions)
- Adjustable load weights for various standards
- Real-time display of temperature, displacement, and time
- Auto-stop at deflection point
- Robust steel construction for long-term durability
🧪 Applications
- Plastic resin manufacturing
- Injection molding & extrusion QC
- Polymer research & development
- Material certification labs
- Automotive & engineering plastics testing
📦 Materials Tested
- Thermoplastics (PP, PE, PVC, PS, ABS, PC)
- Engineering plastics (PBT, PA, PEEK)
- Reinforced and filled polymers
- Composite samples
- Rigid sheets, molded parts, and test specimens
📏 Test Standards
- ISO 75 – HDT
- ISO 306 – Vicat softening
- ASTM D648 – Heat deflection temperature
- ASTM D1525 – Vicat softening point
⚙️ Technical Specifications
| Parameter | Specification |
|---|---|
| Number of Stations | 1, 2, or 3 stations |
| Test Modes | HDT (A/B/C) & Vicat (A/B) |
| Heating Medium | Silicone oil bath |
| Temperature Range | RT to 300°C |
| Heating Rate | 50°C/h or 120°C/h |
| Displacement Resolution | 0.001 mm |
| Temperature Accuracy | ±0.5°C |
| Load Weights | 5N, 10N, 50N (as per standard) |
| Control System | Digital PID controller |
| Power Supply | AC 220V / 50–60Hz |
🎁 What’s Included
- HDT & Vicat tester main unit
- Standard load weights
- Silicone oil (initial batch)
- Displacement measuring sensor
- Test sample frames
- Calibration certificate
- User manual
🔧 Options & Accessories
- Additional weight sets
- Silicone oil (high-temperature grade)
- Cooling unit attachment
- Extra sample holders
- PC software for data logging
- Protective fume cover
📄 Sample Requirements
- Standard polymer test specimens
- Smooth, defect-free surfaces
- Dimensions per ISO/ASTM requirements
- Pre-conditioning at required temperature and humidity
❓ FAQs
1. What is the difference between HDT and Vicat?
• HDT measures heat resistance under load.
• Vicat measures softening temperature under penetration load.
2. How many samples can be tested simultaneously?
Models offer 1, 2, or 3 test stations.
3. What oil is used for heating?
High-temperature silicone oil.
4. Does the machine include calibration?
Yes, each unit comes with a calibration certificate.
5. Can it connect to a computer?
PC software is available as an optional accessory.
