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HVT series of HDT/VICAT testing machine is mainly used to determine temperature of deflection under load and Vicat softening temperature of thermoplastic plastics, pipes and fittings.
Heat deflection temperature (HDT) (ISO 75, ASTM D648) indicates the relative behavior of different types of material under load at elevated temperatures. It is determined for materials such as thermoplastics, hard rubber and duroplastic laminates.
Vicat softening temperature (VST) (ISO 306, ASTM D1525) provides a value for the temperature at which a thermoplastic material begins to soften rapidly. This temperature is determined using a needle-shaped indenter with a round cross-sectional area of 1 mm?.
Feature of HVT305:
Computer controlled tester, table type structure, manual lifting racket, analysis temperature-time-displacement curve, print test report ( test data, curve etc.,);
Test Procedure (HDT Heat deflection temperature test):
The bars are placed under the deflection measuring device. A load of 0.45 MPa or 1.80 MPa is placed on each specimen. The specimens are then lowered into a silicone oil bath where the temperature is raised at 2° C per minute until they deflect 0.25 mm for ASTM, 0.32 mm for ISO flatwise, and 0.34 mm for ISO edgewise.
Test Procedure (VST VICAT softening point test):
A test specimen is placed in the testing apparatus so that the penetrating needle rests on its surface at least 1 mm from the edge. A load of 10N or 50N is applied to the specimen. The specimen is then lowered into an oil bath at 23 degrees C. The bath is raised at a rate of 50° or 120° C per hour until the needle penetrates 1 mm.
Other name:
HDT tester; HDT Vicat Tester; Heat deflection vicat softening temperature Vicat; HDT/VICAT softening temperature Tester; hdt vicat heat deformation point tester; Heat Distortion Temperature Tester
| Model | HVT305 (XRW-300E) |
| Structure | Table |
| Sample racket lifting | Manual |
| Control & Display | Computer |
| Printer | Printer A4 paper |
| Temperature range | Ambient temperature to 300℃ |
| Heating speed | 120±10℃/h, （12℃±1℃／6min ） 50±5℃/h, （5℃±0.5℃／6min） |
| Temperature resolution | 0.01℃ |
| Deformation resolution | 0.001mm |
| Temperature accuracy | ±0.5℃ |
| Deformation measuring | 0~2mm |
| Load range | 0.73N~49.03N |
| Test stations | 3 sets |
| Vicat Loading capacity | GA=10N±0.2N, GB=50N±1N |
| HDT test | Method A: USE FIBRE STRESS 1.80Mpa Method B: USE FIBRE STRESS 0.45Mpa Method C: USE FIBRE STRESS 8.00Mpa |
| Specimen rack span | 60mm ~ 120mm continuous adjusting |
| Power | 4Kw |
| Electrical supply | 220V, 50HZ/110V, 60HZ |
| Heating medium | methyl silicon oil or transformer oil |
| Other Model: 1, HVT301 Digital display, economical type, table type structure, manual lifting racket, built-in micro printer; 2, HVT302 Digital display, economical type, floor type structure, motorized lifting racket, built-in micro printer; 3, HVT303 Large LCD display, table type structure, manual lifting racket, built-in micro printer; 4, HVT304 Large LCD display, floor type structure, motorized lifting racket, built-in micro printer; 5, HVT305 Computer controlled tester, table type structure, manual lifting racket, analysis temperature-time-displacement curve, print test report ( test data, curve etc.,). 6, HVT306 Computer controlled tester, floor type structure, motorized lifting racket, analysis temperature-time-displacement curve, print test report ( test data, curve etc.,). | |
Comparison Table:
| Model | HVT301 | HVT302 | HVT303 | HVT304 | HVT305 | HVT306 |
| Structure | Table | Floor | Table | Floor | Table | Floor |
| Sample racket lifting | Manual | Motorized | Manual | Motorized | Manual | Motorized |
| Display | Microcontroller Digital display | Microcontroller Digital display | Microcontroller LCD display | Microcontroller LCD display | Computer | Computer |
| Printer | Micro-printer | Micro-printer | Micro-printer | Micro-printer | A4 paper Printer | A4 paper Printer |
| Temp. resolution | 0.1℃ | 0.1℃ | 0.01℃ | 0.01℃ | 0.01℃ | 0.01℃ |
| Deformation resolution | 0.01mm | 0.01mm | 0.001mm | 0.001mm | 0.001mm | 0.001mm |
| Item | Quantity |
| Frame | 1 set |
| Electrical control cabinet | 1 set |
| Sample supporter racket | 3 pcs |
| Weight (2000g,500g,100g,50g) | 3 pcs for each |
| Weight (1000g, 200g) | 6 pcs for each |
| Weight (40g, in one box) | 3 set |
| Vicat needle indenter | 3 pcs |
| HDT pressing head | 3 pcs |
| Displacement sensor | 3 pcs |
| Platinum resistor | 1 pc |
| Electric wire | 1 set |
| Connection wire | 1 set |
| Accessories containing case | 1 pc |
| Computer (for HVT405, 406) | 1 set |
| Professional software (English version) (for HVT405, 406) | 1 set |
| Documents (Manual, packing list, certificate) | |
ISO 75
Plastics -- Determination of temperature of deflection under load
ISO 306
Plastics -- Thermoplastic materials -- Determination of Vicat softening temperature (VST)
ISO 2507
Thermoplastics pipes and fittings -- Vicat softening temperature
ASTM D648
Standard Test Method for Deflection Temperature of Plastics Under Flexural Load in the Edgewise Position
ASTM D1525
Standard Test Method for Vicat Softening Temperature of Plastics
ASTM D5944, ASTM D5945. GB/T 8802, GB/T 1633, GB/T 1634