PRODUCTS

Duratherm HF

Engineered for its high flash point of 277°C (530°F) with an operating limit of 338°C (640°F), the Duratherm HF heat transfer oil offers a solution to those customers requiring the additional margin of safety needed to meet their own internal safety standards or those of their insurance carrier or government regulators.

277°C (530°F) flash point
338°C (640°F) maximum operating temperature
Extensive additives for extended service life
Strong resistance to oxidation
Keeps systems running clean and efficiently
Non-toxic and non-hazardous oil – requires no special handling

TDS
(Technical Data Sheet)

SDS
(Safety Data Sheet)

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Standard

Metric

Temperature Ratings
Max Bulk/Use Temp	338°C
Max Film Temp.	360°C
Pour Point ASTM D97	-9°C

Safety Data
Flash Point ASTM D92	277°C
Fire Point ASTM D92	306°C
Autoignition ASTM E-659-78	393°C

Thermal Properties
Thermal Expansion Coefficient	0.1011 %/°C
Thermal Conductivity	W/m·K
38°C	0.149
100°C	0.147
204°C	0.145
204°C	0.145
260°C	0.145
288°C	0.144
316°C	0.144
Heat Capacity	kJ/kg·K
38°C	1.876
100°C	1.986
204°C	2.168
204°C	2.169
260°C	2.269
288°C	2.319
316°C	2.366

Physical Properties
Viscosity ASTM D445	cSt
40°C	104.26
100°C	12.46
204°C	2.36
204°C	2.37
260°C	1.47
288°C	1.22
316°C	1.04
Density ASTM D1298	kg/l
38°C	0.86
100°C	0.84
204°C	0.80
204°C	0.80
260°C	0.78
288°C	0.77
316°C	0.76
Vapor Pressure ASTM D2879	kPa
38°C	0.00
100°C	0.00
204°C	0.14
204°C	0.14
260°C	1.52
288°C	4.21
316°C	12.00
Distillation Range ASTM D2887
10%	446°C
90%	554°C
Molecular Weight	399
Specific Gravity @ 16°C	0.867

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	640°F
Max Film Temp.	680°F
Pour Point ASTM D445	15°F

Safety Data
Flash Point ASTM D92	530°F
Fire Point ASTM D92	582°F
Autoignition ASTM E-659-78	739°F

Thermal Properties
Thermal Expansion Coefficient	0.0562 %/°F
Thermal Conductivity	BTU/hr·ft·F°
100°F	0.086
212°F	0.085
399°F	0.084
500°F	0.084
550°F	0.083
Heat Capacity	BTU/lb·F°
100°F	0.448
212°F	0.474
399°F	0.518
500°F	0.542
550°F	0.554

Physical Properties
Viscosity ASTM D445	cSt
40°F	1,076.69
100°F	116.57
260°F	7.00
Density ASTM D1298	lb/ft³
100°F	53.63
212°F	52.21
399°F	49.81
500°F	48.55
550°F	47.92
Vapor Pressure ASTM D2879	psia
100°F	0.00
212°F	0.00
399°F	0.02
500°F	0.22
550°F	0.61
Distillation Range ASTM D2887
10%	834°F
90%	1030°F
Molecular Weight	399
Specific Gravity @ 60°F	0.867