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Specialist Materials for Industry and Science

Vacuum Grease Properties

Vacuum Grease Properties

Typical PropertyAP101AP100HLMNT
Main areas of application General Lubricating High Temp High Vacuum General Vacuum Cryogenic Medium Temp
Typical working temperature range °C
°F
-40 - 180
-40 - 365
10 - 30
50 - 86
-10 - 240
  14 - 464
10 - 30
50 - 86
10 - 30
50 - 86
-269 - 30
-452 - 86
10 - 120
50 - 248
Dropping point - ASTM.D 566-02
(IP 132/96)
°C
°F
>200
>392
42 - 52
108 - 126
doesn't melt 42 - 52
108 - 126
40 - 60
104 - 140
42 - 52
108 - 126
112 - 137
233 - 278
Vapour pressure @
20°C / 68°F, Torr
<1.0 x 10-5 7.0 x 10-11 1.7 x 10-9  7.0 x 10-11          1.7 x 10-9 6.0 x 10-10 4.6 x 10-9
Relative density @
20°C / 68°F
0.981 1.042 0.918 0.896 0.894 0.911 0.912
Resistant to radiation *N/R *N/R *N/R Yes Yes *N/R *N/R

Lubricity 4 Ball Test
ASTM.D 2596 (IP 239/97), kg

450 450 250 150 140 150 N/A
Outgassing characteristics ASTM.E 595-93(2003)e1 TML
CVCM
N/A
N/A
<1%
<0.1%
<1%
<0.1%
<1%
<0.1%
N/A
N/A
<1%
<0.1%
N/A
N/A
Viscosity of molten grease, cSt @ 50°C/122°F
@ 100°C/212°F
N/A
N/A
N/A
N/A
N/A
N/A
766
62.3
413
29.8
N/A
N/A
N/A
N/A

Coefficient of expansion
per °C over 20-30°C

0.00066 N/A N/A 0.00076 0.00075 0.00072 0.00073
Thermal conductivity, w/m °C @ 20°C
@ -269°C
N/A
N/A
N/A
N/A
0.216
N/A
0.194
N/A
0.194
N/A
0.194
0.095
N/A
N/
Specific heat
@ 25°C, J/g
N/A N/A 1.7 N/A N/A N/A N/A
Electrical strength, V/mil (0."001) N/A N/A N/A 730 850 820 730
Volume resistivity, Ω cm N/A N/A N/A 1.2 x 1016 2.6 x 1016 2.0 x 1016 2.3 x 1012
Permittivity N/A N/A N/A 2.3 2.1 2.3 2.3
Loss tangent N/A N/A N/A <0.0001 <0.0001 <0.0001 <0.0001
Surface breakdown at flash over, kV N/A N/A N/A 24 28 27 24
Technical Data Sheet  pdf  pdf pdf   pdf   pdf    pdf  pdf
Safety Data Sheet  pdf  pdf pdf   pdf  pdf  pdf  pdf

*N/R - Not Recommended

All properties quoted in this table are typical values and do not constitute a specification.

To find out more about the Apiezon family of silicone-free high vacuum greases, our team of experts are available via our helpline: Apiezon Technical Helpline +44 (0)161 864 5409. Alternatively, please contact us and will be in touch shortly.



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