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Vicat Softening Temperature - ISO 306
The temperature at which a 1mm2 flat-ended needle will penetrate 1mm into a material under a specified load and heating rate. The vicat softening temperature can be used to compare the heat-softening characteristics of different materials.
Four different methods may be used for testing.
Method | Load (N) | Heating Rate (°C/hr) |
---|---|---|
A50 | 10 | 50 |
B50 | 50 | 50 |
A120 | 10 | 120 |
B120 | 50 | 120 |
ISO 10350 Note
ISO 10350 Vicat values are tested using the B50 method.