Duratherm HF
Engineered for its high flash point of 277°C (530°F) with an operating limit of 338°C (640°F), the Duratherm HF heat transfer oil offers a solution to those customers requiring the additional margin of safety needed to meet their own internal safety standards or those of their insurance carrier or government regulators.
Max. Operating Temp
338°C (640°F)
Features
- 277°C (530°F) flash point
- 338°C (640°F) maximum operating temperature
- Extensive additives for extended service life
- Strong resistance to oxidation
- Keeps systems running clean and efficiently
- Non-toxic and non-hazardous oil – requires no special handling
Temperature Ratings
| Max Bulk/Use Temp | 640°F |
| Max Film Temp | 680°F |
| Pour Point ASTM D97 | 15°F |
Safety Data
| Flash Point ASTM D92 | 530°F |
| Fire Point ASTM D92 | 582°F |
| Autoignition ASTM E-659-78 | 740°F |
Physical Properties
Viscocity ASTM D445
cSt
| 120°F | 68.2 |
| 500°F | 1.5 |
| 640°F | 0.9 |
Density ASTM D1298
lb/ft³
| 120°F | 53.4 |
| 500°F | 48.6 |
| 640°F | 46.8 |
Vapor Pressure ASTM D2879
psia
| 120°F | 0 |
| 500°F | 0.22 |
| 640°F | 5.34 |
Distillation Range ASTM D2887
| 10% | 834°F | 90% | 1030°F |
| Molecular Weight | 399 |
| Specific Gravity @ 60°F | 0.867 |
Thermal Properties
Thermal Expansion Coefficient
0.0562%/°F
Thermal Conductivity
BTU/hr·ft·F°
| 120°F | 0.086 |
| 500°F | 0.084 |
| 640°F | 0.083 |
Heat Capacity
BTU/lb F
| 120°F | 0.453 |
| 500°F | 0.542 |
| 640°F | 0.575 |