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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

TDS
(Technical Data Sheet)

SDS
(Safety Data Sheet)

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Standard

Metric

Temperature Ratings
Max Bulk/Use Temp	332°C
Max Film Temp.	354°C
Pour Point ASTM D97	-18°C

Safety Data
Flash Point ASTM D92	229°C
Fire Point ASTM D92	244°C
Autoignition ASTM E-659-78	367°C

Thermal Properties
Thermal Expansion Coefficient	0.1011 %/°C
Thermal Conductivity	W/m·K
38°C	0.144
100°C	0.140
204°C	0.135
204°C	0.135
260°C	0.131
288°C	0.130
316°C	0.128
332°C	0.127
332°C	0.126
Heat Capacity	kJ/kg·K
38°C	1.989
100°C	2.195
204°C	2.539
204°C	2.541
260°C	2.721
288°C	2.814
316°C	2.906
332°C	2.958
332°C	2.960

Physical Properties
Viscosity ASTM D445	cSt
40°C	42.38
100°C	6.82
204°C	1.63
204°C	1.62
260°C	1.06
288°C	0.91
316°C	0.79
332°C	0.74
332°C	0.74
Density ASTM D1298	kg/l
38°C	0.85
100°C	0.81
204°C	0.74
204°C	0.74
260°C	0.70
288°C	0.68
316°C	0.67
332°C	0.65
332°C	0.65
Vapor Pressure ASTM D2879	kPa
38°C	0.00
100°C	0.00
204°C	0.40
204°C	0.41
260°C	2.28
288°C	4.90
316°C	9.65
332°C	13.90
332°C	14.07
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	0.0562 %/°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	0.524
399°F	0.606
500°F	0.650
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	50.64
399°F	46.23
500°F	43.85
550°F	42.68
630°F	40.79
Vapor Pressure ASTM D2879	psia
100°F	0.00
212°F	0.00
399°F	0.06
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