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Material table
General specification
Unit
iglidur® X6
Test method
density
g/cm³
1,53
Colour
dark blue
max. Moisture absorption at 23°C/50% room humidity.
% by weight
0,1
DIN 53495
max. total moisture absorption
wt.-%
0,5
Sliding friction coefficient, dynamic, against steel
µ
0,09 - 0,25
pv value, max. (dry)
MPa x m/s
1,35
Mechanical specification
flexural modulus
MPa
16.000
DIN 53457
flexural strength at 20°C
MPa
290
DIN 53452
Compressive strength
MPa
190
maximum recommended surface pressure (20°C)
MPa
150
Shore D hardness
89
DIN 53505
Physical and thermal specification
Upper long-term application temperature
°C
+250
Upper short-term application temperature
°C
+315
Upper short-term ambient temperature1)
°C
+315
Lower application temperature
°C
-100
thermal conductivity
W/m x K
0,55
ASTM C 177
coefficient of thermal expansion (at 23°C)
[K-1 x 10-5]
1,1
DIN 53752
Electrical specification2)
Volume resistivity
Ωcm
< 105
DIN IEC 93
surface resistance
Ω
< 103
DIN 53482
With respect to its general mechanical and thermal specifications, iglidur® X6 is directly comparable to our high-temperature classic, iglidur® X, and may even provide advantages, such as its wear behaviour.
Mechanical specification
The maximum recommended surface pressure represents a mechanical material parameter. It is not possible to draw conclusions about the tribology from this. the compressive strength of iglidur® X6 plain bearings decreases with increasing temperatures. diagram 02 illustrates this relationship.
diagram. 03 shows the elastic deformation of iglidur® X6 under radial load. At a surface pressure of 100 MPa, the deformation is less than 2 %. Possible plastic deformation depends, among other things, on the duration of the impact.
Friction and wear
Like the wear resistance, the coefficient of friction μ also changes with the load. The coefficient of friction of iglidur® X6 decreases with the load and is almost constant from approx. 30 MPa. The coefficient of friction also falls significantly with speed (diagrams 04 and 05).
Shaft materials
Friction and wear are also highly dependent on the shaft material. If the shafts are too smooth, the coefficient of friction and the wear of the bearing increase at the same time. The best case for iglidur® X6 is a bottom surface with an average surface finish of Ra = 0.4-0.7μm. diagram. 06 shows the results of tests of various shaft materials with plain bearings from iglidur® X6. The best performance is achieved with the shaft materials free-cutting steel and bright steel 1.0037. For higher loads, we recommend harder steel grades. Unhardened steel shafts can be subject to wear through the bearing at pressures of over 2 MPa. According to the wear database, iglidur® X6 is more suitable for rotational than swivelling movements (diagram.07). If the shaft material you are planning to use is not listed in these test results, please contact us.
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