HDT Important indicators to evaluate the structure and stability of materials in high temperature environment
Definition:
- Thermal deformation temperature (HDT): Temperature causing specified deformation under load with constant heating, indicating material thermal stability under continuous load.
- Vicat softening point: Temperature when 1mm needle insertion occurs under specified conditions, reflecting material heat resistance under thermal-force coupling.
Instrument characteristics:
- Intelligent PID control ensures precise heating rate and temperature consistency.
- Performs thermal deformation tests on various standard specimens.
- Conducts Vicat softening point tests for different standard specimens.
- Enables simultaneous thermal deformation and Vicat softening point testing.
- Automatically calculates required load based on test standards and specimen size.
- Offers two heating rates for easy switching with simple operation.
- Auto-shuts off temperature control and power upon test completion or overheating.
- Features software and mechanical overtemperature protections for worry-free testing.
- Provides diversified report settings and comprehensive printing functions.
Test Standards:
GB / t1633, GB / t1634, GB / t8802, ISO75-2013, ASTM D 648, ASTM D 1525, EN727
Technical Parameters:
Model | XRW-300BT-Ⅵ |
1)Temperature control range | Room temperature ~300℃ |
2)Maximum temperature error | ±0.5℃ |
3)Heating rate | 50℃/h,120℃/h,Or set between 50-120℃ / h |
4)Temperature measurement point | 1 |
5)Test frame number | 6 |
6)The range of deformation measurement | -0.1~10mm |
7)Maximum deformation error | ±0.005mm |
8)Deformation resolution | 0.001mm |
9)The sample supports the span | 64mm,100mm |
10)Load bar and press (needle) weight | 74g |
11)Voltage and power | 220V, 6KW |
12Thermal expansion coefficient of sample itself | <0.005/100℃ |
13)working medium | Methylsilicone oil or transformer oil |
14)cooling-down method | Natural cooling above 150℃, water cooling below 150℃ or natural cooling. |


