| Property |
301 |
WD-40 |
| |
|
|
| Density, lbs/gal |
10.2 |
6.7 |
| |
Water
has a density of 8.34 lbs/gal. Lubricants that are denser than water have a
better water displacing ability. |
| Flash Point |
400° F |
110° F |
| |
The
temperature at which a liquids vapors can ignite. D.O.T. regulations
regard flash points below 100° F as flammable, below 200° F as combustible
and above 200° F as non-hazardous. |
| Viscosity, cps |
5 |
5 |
| |
Viscosity is the resistance of a liquid to flow. Generally, the lower the
viscosity of a lubricant, the better the lubricating efficiency.
Centipoise (cps) is one method of measuring viscosity, other often used
measurement units are centistokes (cs) and SSU. |
| Viscosity Index
(ASTM D-2270) |
178 |
80 |
| |
The
higher the viscosity index (VI) the more stable the viscosity is over a wide
temperature range. Lower VI lubricants offer less protection due to
viscosity breakdown at elevated temperatures. |
| Pour Point (ASTM
D-97) |
-60° F |
-100° F |
| |
The
lowest temperature at which a lubricant will flow. |
| Surface Tension,
dynes/cm |
31 |
31 |
| |
A lower
surface tension generally provides better "wetting" of the metal surfaces in
contact with the lubricant. Water has a surface tension of 72 dynes/cm
at 75° F |
| Coefficient of
Friction |
100 psi - 0.0817 |
100 psi - 0.122 |
| |
Measures
the ability of a lubricant to reduce friction between two solid surfaces.
The lower the coefficient of friction the better the friction reducing
ability. |
| Breakdown Voltage |
41,000V (ASTM D-877) |
12,000 V for 0.1" |
| |
The
dielectric breakdown voltage is a measure of a materials ability to
withstand electrical stress. |
| Kauri Butanol Value |
95 |
Not Available |
| |
The Kauri
Butanol value is a measure of solvency. The solvents in TSI 301 can
dissolve such contaminants as grease, oils, and tars. |
| Chemical Composition |
Synthetic Organic
Ester |
Petroleum Based |
|
Organic
ester lubricants have many advantages over petroleum based lubricants.
Maintenance and down time are greatly reduced, thereby extending lubrication
intervals because: (!) the viscosity is more stable over a wide temperature
range. (2) They also possess a high film strength and (#) they oxidize
less easily. |
