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.
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 316°C
Max Film Temp. 366°C
Pour Point ASTM D97 -66°C
SAFETY DATA
Flash Point ASTM D92 324°C
Fire Point ASTM D92 336°C
Autoignition ASTM E-659-78 437°C
THERMAL PROPERTIES
Thermal Expansion Coefficient 0.099 %/°C
Thermal Conductivity W/m·K
38°C 0.133
204°C 0.109
204°C 0.109
260°C 0.100
288°C 0.097
316°C 0.093
Heat Capacity kJ/kg·K
38°C 1.717
204°C 2.034
204°C 2.035
260°C 2.144
288°C 2.194
316°C 2.248
PHYSICAL PROPERTIES
Viscosity ASTM D445 cSt
-18°C 113.08
40°C 36.14
100°C 16.57
260°C 5.19
288°C 4.54
316°C 4.03
Density ASTM D1298 kg/l
38°C 0.95
204°C 0.81
204°C 0.81
260°C 0.77
288°C 0.74
316°C 0.72
Vapor Pressure ASTM D2879 kPa
38°C 0.00
204°C 0.14
204°C 0.14
260°C 1.79
288°C 3.52
316°C 6.83
Distillation Range ASTM D2887
10% 494°C
90% 679°C
Note: The values quoted in the table above are typical of normal production.They do not constitute a specification.