The WK3 Vicat Softening Temperature Tester (Heat Deflection Temperature) HDT Tester is a high-precision, intelligent laboratory instrument engineered to determine the Vicat softening point and heat deflection temperature (HDT) of non-metallic materials, including thermoplastics, engineering plastics, rubber, nylon, and electrical insulating materials. Designed for rigorous quality control, polymer R&D, and academic research, the WK3 combines advanced temperature control with precise microcomputer measurement to evaluate thermal performance under load before materials are deployed in demanding industrial applications.
Equipped with 3 independent test stations, a wide thermal range from room temperature up to 300 °C, and dual linear heating rates (120 °C/h and 50 °C/h), this robust testing system ensures reliable, repeatable behavioral analysis. Complying with an extensive array of global testing standards—including ISO, ASTM, DIN, and GB specifications—the WK3 provides materials engineers with internationally recognized compliance data for thermal stability.
International Compliance & Applicable Standards
The WK3 Vicat Softening Temperature Tester is engineered to meet and exceed global testing methodologies, ensuring seamless correlation for international quality assurance and export verification:
| Standard Body |
Standard Designation |
Testing Scope & Description |
| ISO Standards |
ISO 75-2, ISO 306 |
Determination of temperature of deflection under load (HDT) and Vicat softening temperature (VST) for thermoplastics |
| ASTM Standards |
ASTM D 648, ASTM D 1525 |
Standard test methods for deflection temperature of plastics under flexural load and Vicat softening temperature of thermoplastics |
| DIN Standards |
DIN 53460, DIN 53461 |
Testing of plastics; determination of Vicat softening temperature and dimensional stability under heat (HDT) |
| European / UNI EN ISO |
UNI EN ISO 75-2, UNI EN ISO 306 |
European harmonized specifications for plastics determination of load deflection temperature and Vicat temperature |
| National Standards |
GB/T 1633, GB/T 1634 |
Chinese national standards for thermoplastic pipe and material Vicat softening temperature and load deflection temperature |
Key Features of WK3 Vicat Softening Temperature Tester
- 3 Independent Test StationsFeatures 3 dedicated sample holder stations, allowing multiple specimens to be tested simultaneously for enhanced laboratory throughput and comparative analysis.
- Precise Temperature Control & Heating RatesOperates smoothly from room temperature up to 300 °C with selectable standard heating rates of 120 °C/h and 50 °C/h to comply with standard test profiles.
- High-Precision Deformation MeasurementIncorporates advanced microcomputer processing technology with a maximum deformation measurement error of only ±0.01 mm for exceptional accuracy.
- Optimized Load Rod ConfigurationThe total mass of the load rod, tray, and micrometer rod is calibrated precisely to 64g ±1g to ensure standardized pressure application.
- Efficient Cooling & Heating PowerPowered by a robust 4 kW maximum heating system, supported by flexible natural cooling or water cooling options to optimize test turnaround times.
- Real-Time Computer IntegrationSupports real-time digital display, automated temperature regulation, data logging, and comprehensive test report generation via matched computer software.
Technical Specifications of WK3 Tester
| Product Model |
WK3 Intelligent Vicat Softening & Thermal Deformation Temperature Tester |
| Temperature Control Range |
Room temperature ~ 300 °C |
| Standard Heating Rates |
120 °C/h, 50 °C/h |
| Deformation Measurement Error |
±0.01 mm |
| Number of Sample Stations |
3 independent stations |
| Heating Medium Requirement |
Methyl silicone oil (viscosity below 200 centistokes, flash point above 300 °C; user-provided) |
| Maximum Heating Power |
4 kW |
| Cooling Method & Power Supply |
Natural cooling or water cooling; Power: 220V ±10%, 15A, 50/60Hz |
| Load Rod, Tray & Micrometer Mass |
64g ±1g |
Who Uses the WK3 Tester?
The WK3 Vicat Softening Temperature Tester is an essential quality assurance and material characterization tool for:
- Plastic & Polymer Manufacturers: Quality control testing for raw resin batches, modified plastics, and extruded profiles.
- Electrical & Electronic Component Makers: Verifying thermal endurance and deformation resistance for insulating housings and connectors.
- Research Institutes & Universities: Academic polymer characterization, material formulation studies, and thermal behavior analysis.
- Third-Party Inspection Bodies: Certified testing laboratories providing compliance validation against ISO, ASTM, and DIN standards.
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