|Technical Data Sheet
Shell Corena AS
Advanced synthetic air compressor lubricants
Shell Corena AS is an advanced air compressor lubricant using specialized additive technology,
capable of giving outstanding performance in oil-flooded air compressors of screw or vane
design. Based on specially selected PAO base fluids, Corena AS provides long oil life and
effective lubrication in severe applications.
Applications Corena AS resists the formation of carbon deposits
and the formation of sludge in all moving parts of
* Rotary sliding vane and screw air compressors sliding vane and screw compressors to ensure
Oil-flooded single and two-stage compressors, in maximum output of the machine throughout the
particular those operating with output pressures of service interval.
greater than 20 bar (290 psi) and with air discharge
temperatures greater than 100°C (212 °F) (including
intermittent operation under these conditions).
* Very good rusting and wear protection
* Equipment running under severe conditions Effectively protects all metal surfaces from corrosion.
May also be used where exceptionally high ambient Protects sensitive machinery parts, e.g. gears, screws,
temperatures are found, when the oil temperature bearings, from wear and helps to prolong the service
cannot be reduced to normal levels. intervals.
* ABB Turbochargers * Excellent low volatility characteristics
The product is recommended for use in ABB Low volatility giving low oil consumption and low oil
turbochargers fitted to low and medium speed diesel carry over. The top up rates are low.
engines used in marine and power generation
applications. * Very good surface properties
Advice on applications not covered in this leaflet may be Resulting in
a low foaming tendency, very good air
obtained from your Shell representative. release and water shedding properties. This helps to
separate oil from air and water in two-stage
compressor intercoolers, oil/water separators and
Performance Features and Benefits
* Extended oil drain intervals
* Excellent thermal stability Corena AS will allow for significant increases in oil
Corena AS helps reduce sludge and deposit drain intervals, where allowed by manufacturers - up
formation from thermal degradation processes, even to a maximum of 12,000 hours, even when
at very high temperatures, helping to maintain operating at a continuous maximum discharge air
compressor efficiency. temperature in excess of 100°C (212°F).
* Excellent water shedding properties * High viscosity index
The product is easily separated from water, helping Reduced change of viscosity with change in
to keep the system in good condition even when operating temperature in comparison to conventional
contaminated with water. mineral oil-based products. This provides low
* Outstanding resistance to oxidation starting viscosi
Technical Data Sheet
Specifications and Approvals Corena AS is compatible with all sealing materials
commonly used in air compressors.
Shell Corena AS meets the requirements of: ISO 6743-
3A-DAJ. Corena AS 68 is approved by ABB for use in Health & Safety
VTR turbochargers, with a maximum oil change interval Guidance on Health and Safety are available on the
of 5000 hours (HZTL 90617, list 3). appropriate Material Safety Data Sheet, which can be
obtained from your Shell representative.
Corena AS is fully miscible with mineral oils, although Protect the environment
dilution with mineral lubricants will markedly reduce its Take used oil to an authorized collection point. Do not
performance. Care must be taken to ensure that Corena discharge into drains, soil or water.
AS is not mixed with some type of synthetic fluids.
Contact your Shell Representative for further information
Typical Physical Characteristics
Shell Corena AS
Unit Method 32 46 68
Product Codes Drum 5070687 5070688 5070689
Pail 5070691 5070692 5073760
ISO Viscosity Grade ISO 3448 32 46 68
Kinematic Viscosity ASTM D445
at 40°C (104 °F) mm2/s 32 46 68
at 100°C (212 °F) mm2/s 6.0 7.7 10.4
Density at 15 °C (59 °F) g/mL ASTM D1298 0.843 0.843 0.846
Flash point (COC) °C (°F)
ASTM D92 230 (446) 235 (455) 258 (496)
Pour Point °C (°F) ASTM D97 -50 (-58) <-45 (-49) <-45 (-49)
Viscosity Index (VI) DIN ISO 2909 135 135 139
Rust prevention properties ASTM D665-B pass pass pass
Water separability min ASTM D1401 10 10 10
Rotating Pressure Vessel
Oxidation Test min ASTM D2272 2200 2200 2200
FZG load carrying test stage CEC-L-07-A-95 12 >12 >12
These characteristics are typical of current production. While future production will conform to Shell’s specifications,
variations in these characteristics may occur.