Cas

trol Alpha SP S Range

Description
Castrol Alpha™ SP S gear oils are a range of high quality solvent refined mineral oils, fortified with sulphur-phosphorous
compounds to impart anti-wear and extreme pressure properties. Corrosion protection additives (VCI inhibitor) are also
added to give added corrosion protection on storage after use.
Application
Castrol Alpha SP S oils are recommended for the lubrication of industrial gearboxes with forced circulation or splash and
oil bath lubrication. Especially useful for storage and/or transportaion of gears. Can be used if equipment needs to be
"mothballed".
Advantages
Excellent thermal stability and oxidation resistance.
Long oil life.
Good water resistance and demulsification characteristics.
Rust and copper corrosion protection of metal surfaces.
Upto 24 months corrosion protection in closed transmissions

Typical Characteristics
Name Method Units Alpha SP
100 S
Alpha SP
150 S
Alpha SP
220 S
ISO Viscosity Grade - - 100 150 220
Density @ 15°C / 59°F
ISO 12185 / ASTM
D4052
kg/m³ 890 890 890
Kinematic Viscosity @ 40°C /
104°F
ISO 3104 / ASTM
D445
mm²/s 100 150 220
Kinematic Viscosity @ 100°C
/ 212°F
ISO 3104 / ASTM
D445
mm²/s 11.2 14.7 18.7
Viscosity Index
ISO 2909 / ASTM
D2270
- 95 95 95
Pour Point
ISO 3016 / ASTM
D97
ºC/ ºF -21/ -6 -18/ 0 -18/ 0
Foam Sequence I - tendency
/ stability
ISO 6247 / ASTM
D892
ml/ml 50/0 50/0 50/0
Flash Point - open cup
method
ISO 2592 / ASTM
D92
ºC/ ºF 175/ 347 175/ 347 175/ 347
Rust test - synthetic seawater
(24 hrs)
ISO 7120 / ASTM
D665B
- Pass Pass Pass
Copper corrosion (3
hrs@100°C/212°F)
ISO 2160 / ASTM
D130
Rating 1b 1b 1b
FZG Gear Scuffing test - A/
8.3/90*
ISO 14635-1
Failure Load
Stage
12+