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Heat Deformation Tester


Heat Deformation – HDT/VSP Tester is a consistent tool useful for determining the ability of a given polymer to bear load at elevated temperatures. Accurate and reliable deflection or deformation is an important component in the plastics industry. PRESTO Heat Deformation HDT/VSP tester is equipped with indenter which indents the sample under specific load and offers heat deformation and Vicat Softening temperature of plastic or polymer materials. The deflection on the gauge is the measure of deformation of the test specimen.

Presto’s Heat Deformation Tester is designed as per ASTM D1525 – 09 and ASTM D648 – 07 to determine deflection temperature and Vicat softening temperature of plastics. The machine is equipped with two stations. Stainless steel is used for the construction of inner bath, and Mild Steel is used for outside body with powder coating.

With the excellent operational accuracy, the offered Heat Deformation Tester is extensively used to measure the deflection temperature and Vicat softening temperature of plastic materials.

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Specifications / Model Digital
Display Digital LED
Temp. Range From ambient to 250° C
Temp. Least Count 0.1 Degree Celcius
Weights 5 kg
Material of Construction Inner bath: Stainless Steel
Outer Body Mild Steel duly powder coated
Power Supply Single Phase 220-240V AC, 50Hz.
Paint Mild steel Powder coated Havell Gray & Blue combination finish and bright chrome / zinc plating
Control Method Temp. Controller Digital
Industry Plastic

    • Temperature range of the machine can be set from ambient to 250 °C.
    • Rate of Heating can set 120 °C per hour and 50 °C per hour.
    • Machine can be operated on power consumption of Single phase, 230 Volts, 50Hz.
    • Diameter of Indenter tip: 1.120 mm
    • Temperature Controller range: Up to 250ºC
    • Dial Gauge Range: up to 5 mm
    • Resolution/Least Count: 0.001 mm
    • Heater: 1 Kw
    • Power: 220V, 50Hz, Single Phase
    • Dial Gauge: 2
    • No. of test stations: 2
    • Testing Medium: Water or Silicone Oil


    • It is very easy to operate.
    • The testing instrument is delivered with a user manual and calibration certificate.
    • Equipped with 2 stations to measure Deflection temperature and Vicat Softening temperature
    • Precise measurement through Dial Gauge
    • Used for testing with both water and silicone oil
    • Advanced Digital Microprocessor based PID based temperature controller
    • Inbuilt Auto tuning function
    • Highly accurate test results under uniform temperatures in the chamber
    • Setting to RTD PT-100 sensor through advanced PID controller
    • High-Quality rugged structure with corrosion resistant main body
    • Dial gauge to measure the deflection in test samples
    • Fast Guiding Mechanism with plunger rod
    • Single handed hassle-free operation with test start operation
    • Standards: IS 2530-1963, ISO 75-1(2004)-E, ASTM D648-01, ASTM D1525-00.

Corporate Office


Presto Stantest Pvt. Ltd.
I-42, DLF Industrial Area,
Phase-1, Delhi Mathura Road,
Haryana, India

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