HEAT TECH Heat Transfer Oil is a thermal fluid for heat-transfer systems. It is offered in ISO VG 32, ISO VG 46.
Grades & published data
Typical values from the product data sheet, each with its test method.
| Property | ISO VG 32 | ISO VG 46 | Method |
|---|---|---|---|
| Kinematic viscosity at 40 °CcSt | 36 | 49 | ASTM D445 |
| Kinematic viscosity at 100 °CcSt | 5.7 | 7.1 | ASTM D445 |
| Viscosity index | 100 | 100 | ASTM D2270 |
| Pour point°C | -21 | -21 | ASTM D97 |
| Flash point (Cleveland open cup)°C | 214 | 240 | ASTM D92 |
| Air release at 50 °Cminutes | 5 | 5 | ASTM D3427 |
| Foaming, Sequence I (24 °C)ml/ml | 5/0 | 5/0 | ASTM D892 |
| Foaming, Sequence II (93.5 °C)ml/ml | 10/0 | 10/0 | ASTM D892 |
| Foaming, Sequence III (24 °C after 93.5 °C)ml/ml | 5/0 | 5/0 | ASTM D892 |
| Total acid number (TAN)mg KOH/g | 0.1 | 0.1 | ASTM D974 |
Overview
HEAT TECH Heat Transfer Oil is a thermal fluid for heat-transfer systems. It is offered in ISO VG 32, ISO VG 46.
The specification table lists, for each grade, kinematic viscosity at 40 °C and 100 °C, viscosity index, pour point, flash point and acid number, each with its test method. Share operating conditions with our technical team to confirm the grade before supply.
Application
Indirect heating systems whose design conditions fit this fluid; operating temperature limits are set by the approved technical documentation.
Feature
ISO VG 32: KV40 36 cSt, KV100 5.7 cSt, VI 100, pour point -21 °C; ISO VG 46: KV40 49 cSt, KV100 7.1 cSt, VI 100, pour point -21 °C.
Feature
Published kinematic viscosity at 40 °C sits inside the ISO 3448 tolerance (mid-point ±10 %) for ISO VG 46 (49 cSt).
Feature
Besides viscosity, the published data includes acid number, flash point (COC) and foaming tendency.
Start from the equipment manufacturer's viscosity recommendation at operating temperature. The ISO VG number is the mid-point kinematic viscosity at 40 °C (ISO 3448), and each grade's published values are listed separately.
Next step
The range above is what we publish. Formulation to a customer brief is a route of its own, and a sample is the first stage of it.
