Vacuum Greases Properties Table

Below is the vacuum greases properties table for Apiezon hydrocarbon greases:

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 °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, kg

450 450 250 150 140 150 N/A

Outgassing characteristics ASTM.E 595

TML
CVCM
N/A
N/A
<1%
<0.1%
N/A
N/A
<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

*N/R – Not Recommended

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

For the typical properties of our other products please click the relevant link below –

Properties of Apiezon PFPE 501 grease

Properties of AP201 oil

Properties of Sealing Oil

To find out more about the Apiezon family of silicone-free high vacuum greases manufactured by M&I Materials Ltd, please contact our team of experts via our helpline or online.

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