PRODUCTS

Duratherm 630

Rated to 333°C (630°F) and engineered to be an economical and environmentally friendly replacement to chemical aromatic thermal fluids, Duratherm 630’s enhanced blend is designed to offer years of trouble free service and superior protection from oxidation even at higher operating temperatures.

  • 333°C (630°F) maximum operating temperature
  • Clean alternative to synthetic, benzene based thermal fluids
  • Engineered for precise temperature control
  • Lubricates and extends the life of gaskets and seals
  • Superior protection against sludge formation
  • Non-toxic, non-hazardous
Standard
Metric

Temperature Ratings

Max Bulk/Use Temp 333°C
Max Film Temp. 355°C
Pour Point ASTM D445 -18°C

Safety Data

Flash Point ASTM D92 229°C
Fire Point ASTM D92 245°C
Autoignition ASTM E-659-78 367°C

Thermal Properties

Thermal Expansion Coefficient 0.0562 %/°C
Thermal Conductivity W/m·K
38°C 0.144
100°C 0.14
204°C 0.135
260°C 0.131
288°C 0.13
316°C 0.128
332°C 0.127
Heat Capacity kJ/kg·K
38°C 1.989
100°C 2.195
204°C 2.539
260°C 2.721
288°C 2.814
316°C 2.906
332°C 2.958

Physical Properties

Viscosity ASTM D445 cSt
40°C 42.38
100°C 6.82
204°C 1.63
216°C 1.47
260°C 1.06
288°C 0.91
316°C 0.79
332°C 0.74
Density ASTM D1298 kg/l
38°C 0.854
100°C 0.811
204°C 0.741
260°C 0.702
288°C 0.684
316°C 0.665
332°C 0.654
Vapor Pressure ASTM D2879 kPa
38°C 0
100°C 0
204°C 0.4
260°C 2.275
288°C 4.895
316°C 9.653
332°C 13.9
Distillation Range ASTM D2887
10% 383°C
90% 494°C
Molecular Weight 395
Specific Gravity @ 16°C 0.864

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 630°F
Max Film Temp. 670°F
Pour Point ASTM D445 -1°F

Safety Data

Flash Point ASTM D92 444°F
Fire Point ASTM D92 472°F
Autoignition ASTM E-659-78 692°F

Thermal Properties

Thermal Expansion Coefficient 0.1012 %/°F
Thermal Conductivity BTU/hr·ft·F°
100°F 0.083
212°F 0.081
399°F 0.078
500°F 0.076
550°F 0.075
630°F 0.073
Heat Capacity BTU/lb·F°
100°F 0.475
212°F 0.5242
399°F 0.6064
500°F 0.65
550°F 0.672
630°F 0.707

Physical Properties

Viscosity ASTM D445 cSt
40°F 320.56
100°F 46.66
260°F 4.15
Density ASTM D1298 lb/ft³
100°F 53.29
212°F 50.642
399°F 46.234
500°F 43.85
550°F 42.68
630°F 40.79
Vapor Pressure ASTM D2879 psia
100°F 0
212°F 0
399°F 0.058
500°F 0.33
550°F 0.71
630°F 2.04
Distillation Range ASTM D2887
10% 721°F
90% 921°F
Molecular Weight 395
Specific Gravity @ 60°F 0.864

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

Duratherm 630