Technical Data Sheet
Shell Lubricants Page 1 of 2 August 2010
Shell Heat Transfer Oil
S2
High Performance Heat transfer fluid
Shell Heat Transfer Oil S2 is based on carefully selected, highly refined mineral oils chosen for
their ability to provide superior performance in indirect closed fluid heat transfer systems.
Applications
• Enclosed circulated heat transfer systems
for industrial applications such as process industry,
chemical plants, textile producers etc. and in
household equipment such as oil filled radiators.
Shell Heat Transfer Oil S2 can be used in high
temperature continuous heat transfer equipment with
the following application limits:
Shell Heat Transfer Oil S2
Max. film temperature 340°C
Max. bulk temperature 320°C
Performance Features and Benefits
• Extended maintenance intervals
Shell Heat Transfer Oil S2 is based on carefully
selected highly refined mineral oils and resists oil
cracking, oxidation and thickening. This provides
extended oil life, provided efficient fluid heating and
good pump circulation is ensured, such that film
temperatures on the heater surface do not exceed the
limits above.
• System efficiency
Low viscosity enables excellent fluidity and heat
transfer over a wide temperature range.
Shell Heat Transfer Oil S2 also has a low vapour
pressure so resists cracking. This minimises the
formation of volatile decomposition products; these
would require recovery via expansion chamber and
condensate collector
• Wear protection
Shell Heat Transfer Oil S2 is non-corrosive and has
high solvency – this reduces deposit formation by
holding oxidation products in solution and keeping
internal surfaces of heat exchangers clean.
Specification and Approvals
Classified as ISO 6743-12 Family Q
Meets typically DIN 51522 requirements
Advice
The life of Shell Heat Transfer Oil S2 depends on the
design and usage of the system. If the system is well
designed and not subjected to abnormal workloads,
the life can be for many years.
It is important to monitor oil condition regularly as
rates of change in physical characteristics are more
significant than actual values. The properties that
should be monitored are viscosity, acidity, flash point
(open and closed) and insolubles content.
Advice on applications not covered in this leaflet
may be obtained from your Shell representative.
Health and Safety
Guidance on Health and Safety is available on the
appropriate Material Safety Data Sheet which can
be obtained from your Shell representative.
Protect the environment
Take used oil to an authorised collection point. Do
not discharge into drains, soil or water.
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RELIABLE PERFORMANCE
Technical Data Sheet
Shell Lubricants Page 2 of 2 August 2010
Typical Physical Characteristics
Density
at 15 °C kg/m3 ISO 12185 866
Flash Point PMCC
°C ISO 2719 210
Flash Point COC
°C ISO 2592 220
Fire Point COC
°C ISO 2592 255
Pour Point
°C ISO 3016 -12
Kinematic Viscosity
ISO 3104
at 0 °C mm2/s 151
at 40 °C mm2/s 25
at 100 °C mm2/s 4.7
at 200 °C mm2/s 1.1
Initial Boiling Point
°C ASTM D 2887 355
Autoignition Temperature
°C DIN 51794 360
Neutralisation Value
mgKOH/g ASTM D974 < 0.05
Ash
(Oxid) %m/m ISO 6245 < 0.01
Carbon Residue
(Conradson) %m/m ISO 10370 0.02
Copper Corrosion
(3h/100°C) ISO 2160 class 1
These characteristics are typical of current production. Whilst future production will conform
to Shell's specification, variations in these characteristics may occur.
Typical Design Data
Temperature °C
0 20 40 100 150 200 250 300 340
Density kg/m3
876 863 850 811 778 746 713 681 655
Specific Heat Capacity kJ/kg*K
1.809 1.882 1.954 2.173 2.355 2.538 2.72 2.902 3.048
Thermal Conductivity W/m*K
0.136 0.134 0.133 0.128 0.125 0.121 0.118 0.114 0.111
Prandtl No.
3375 919 375 69 32 20 14 11 9
