Duratherm S
A silicone based heat transfer fluid that is ideally suited for high oxidation applications or completely exposed systems. Duratherm S is virtually impervious to oxidation at temperatures under 204°C (400°F) and offers superior protection from fluid degradation. Duratherm S is best suited for applications not prone to contamination or leaking.
Max. Operating Temp
316°C (600°F)
Features
- 316°C (600°F) maximum operating temperature
- Pumpable down to -50°C (-46°F)
- Very strong resistance to oxidation up to 204°C (400°F)
- Recommended for use in fully exposed systems like open baths
- Highly resistant to fouling for an extremely long service life
- Non-corrosive and non-toxic thermal fluid for added workplace safety
Temperature Ratings
| Max Bulk/Use Temp | 600°F |
| Max Film Temp | 690°F |
| Pour Point ASTM D97 | -87°F |
Safety Data
| Flash Point ASTM D92 | 615°F |
| Fire Point ASTM D92 | 636°F |
| Autoignition ASTM E-659-78 | 818°F |
Physical Properties
Viscocity ASTM D445
cSt
| -60°F | 299.9 |
| 100°F | 37.4 |
| 400°F | 7.1 |
| 600°F | 4 |
Density ASTM D1298
lb/ft³
| -60°F | 64.3 |
| 100°F | 59.2 |
| 400°F | 50.7 |
| 600°F | 45 |
Vapor Pressure ASTM D2879
psia
| -60°F | 0 |
| 100°F | 0 |
| 400°F | 0.02 |
| 600°F | 0.99 |
Distillation Range ASTM D2887
| 10% | 922°F | 90% | 1255°F |
| Molecular Weight | N/A |
Thermal Properties
Thermal Expansion Coefficient
0.055%/°F
Thermal Conductivity
BTU/hr·ft·F°
| -60°F | 0.085 |
| 100°F | 0.077 |
| 400°F | 0.063 |
| 600°F | 0.054 |
Heat Capacity
BTU/lb F
| -60°F | 0.37 |
| 100°F | 0.41 |
| 400°F | 0.486 |
| 600°F | 0.537 |