Did you know there are many options to consider when selecting thermal fluids?

  1. Temperature is Everything – match your bulk temperature but also consider film temperature, heater type
  2. Controlling Oxidation – high temperature air exposure can destroy the wrong fluid quickly
  3. Maximizing Fluid Life – short-term or long-term use – invest wisely
  4. Availability is Critical – thermal fluids are often critical to production – how long can you wait for your thermal fluid to ship?
  5. Reliable Service & Support – thermal fluids are maintenance-intensive, but can your vendor help you if there are problem

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PRODUCTS

Duratherm 450

Rated to 233°C (450°F), Duratherm 450 is specifically engineered for applications requiring a thermal fluid capable of efficient process heating and cooling. Economical and thermally stable, it provides precise temperature control and is proven to be an excellent alternative to costly synthetics and aromatic fluids.

  • 233°C (450°F) maximum operating temperature while cooling properties
  • Cold temperature pumpability down to -45°C (-49°F)
  • Recommended for precise control of heating and cooling cycles
  • Economical alternative to costly synthetics and aromatics
  • Long lasting and environmentally friendly
  • Uses a dual-stage anti-oxidant to resist oxidation
Standard
Metric

Temperature Ratings

Max Bulk/Use Temp 232°C
Max Film Temp. 254°C
Pour Point ASTM D97 -45°C

Safety Data

Flash Point ASTM D92 150°C
Fire Point ASTM D92 164°C
Autoignition ASTM E-659-78 329°C

Thermal Properties

Thermal Expansion Coefficient 0.1016 %/°C
Thermal Conductivity W/m·K
-18°C 0.135
38°C 0.131
121°C 0.123
232°C 0.114
Heat Capacity kJ/kg·K
-18°C 2.110
38°C 2.299
121°C 2.583
232°C 2.960

Physical Properties

Viscosity ASTM D445 cSt
-18°C 129.20
121°C 1.69
232°C 0.68
Density ASTM D1298 kg/l
-18°C 0.86
38°C 0.82
121°C 0.77
232°C 0.70
Vapor Pressure ASTM D2879 kPa
-18°C 0.00
38°C 0.00
121°C 0.48
232°C 15.72
Distillation Range ASTM D2887
10% 263°C
90% 508°C
Molecular Weight 372

Note: The values quoted in the table above are typical of normal production.
They do not constitute a specification.

Temperature Ratings

Max Bulk/Use Temp 450°F
Max Film Temp. 490°F
Pour Point ASTM D445 -49°F

Safety Data

Flash Point ASTM D92 302°F
Fire Point ASTM D92 327°F
Autoignition ASTM E-659-78 625°F

Thermal Properties

Thermal Expansion Coefficient 0.0564 %/°F
Thermal Conductivity BTU/hr·ft·F°
0°F 0.078
100°F 0.076
250°F 0.071
450°F 0.066
Heat Capacity BTU/lb·F°
0°F 0.504
100°F 0.549
250°F 0.617
450°F 0.707

Physical Properties

Viscosity ASTM D445 cSt
40°F 33.02
Density ASTM D1298 lb/ft³
0°F 53.60
100°F 51.40
250°F 48.00
450°F 43.40
Vapor Pressure ASTM D2879 psia
0°F 0.00
100°F 0.00
250°F 0.07
450°F 2.28
Distillation Range ASTM D2887
10% 505°F
90% 947°F
Molecular Weight 372

Note: The values quoted in the table above are typical of normal production.
They do not constitute a specification.

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