VST/HDT Testing Device – Compact Benchtop System for Heat Deflection Testing
The semi-automated VST/HDT testing device is a compact benchtop system for industrial determination of Vicat Softening Temperature (VST) and Heat Deflection Temperature (HDT) according to international standards – ideal for thermoplastics, hard rubber, and fiber-reinforced composites.
Product Features
✔ 3 test stations (optional 6-station version available)
✔ Automated weight lowering via motorized lifting platform
✔ Integrated oil exhaust with optional filter system
✔ Intuitive operation via touchscreen or Windows software
✔ LIMS integration possible
✔ Large bath opening for easy service and cleaning
✔ Composite testing according to ISO 75-3 with transverse HDT supports
✔ Low oil volume for reduced operating costs
✔ Fast cooling time: approx. 45 min – optionally <15 min with external heat exchanger
Technical Specifications
- Temperature range: +20 °C to +300 °C (up to +350 °C with extension)
- Temperature resolution: ±0.1 K
- Heating rates: 50 K/h, 120 K/h or freely adjustable
- Starting temperature: freely adjustable
- Inductive displacement measurement:
- Resolution: 0.001 mm
- Accuracy: better than 0.01 mm
- Measuring range: up to 15 mm
- HDT support spacing: 64 mm, 100 mm, 101.6 mm
- Bath volume: ~7.5 l (3-position) / ~11.5 l (6-position)
- Creep testing: supported
Standards
ISO 75, ISO 306, ISO 2921, ISO 815-2, ASTM D648, ASTM D1525, DIN 53460, DIN 53461, and more.
Applications
- Determination of Vicat softening temperature for thermoplastics
- Testing of heat deflection temperature (HDT) for filled and fiber-reinforced plastics
- Precise temperature control and low tolerances ensure repeatable results
