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leading in compressed laminated wood

dehonit Kunstharzpressholz im Querschnitt

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Compressed laminated wood – Technical Data

dehonit®

Technical Data 

dehonit® for the transformer industry is produced and offered with varying attributes such as 

Through varying these attributes we can offer different dehonit® grades with excellent mechanical and electrical properties to meet your exact requirements.

Please do not hesitate to contact us for further technical information or advice from our experienced engineers.

dehonit® Material Grades for Transformer Industry
   parallelparallelparallelcrosswisecrosswisecrosswisetangential*tangential*
  Quality   E 885-8 E 825-8 A 735-1 B 895-8 B 825-8 B 735-1 D 795-8 D 725-8
  IEC 61061   P1R P4R - C2R C4R - T2R T4R
  DIN 7707   KP20212 KP20214 KP20218 KP20222 KP20224 KP20228 KP20242 KP20244
Mechanical
properties
UnitStandard        
Specific weight  g / cm³ IEC 61061 0,7-0,9 1,2-1,3 1,3-1,4 0,9-1,1 1,2-1,3 1,3-1,4 0,9-1,1 1,2-1,3
Flexural strength
I   II
N / mm² DIN EN
ISO 178
150 200 220 120 140 150 130 180
Flexural strength
I   II
PSI DIN EN
ISO 178
21.750 29.000 31.900 17.400 20.700 21.750 18.850 26.100
Modulus of elasticity
I
N / mm² DIN EN
ISO 178
14.000 17.000 18.500 11.000 13.000 15.500 14.000 16.000
Modulus of elasticity
I
PSI DIN EN
ISO 178
2,0x106 2,5x106 2,7x106 1,6x106 1,9x106 2,2x106 2,0x106 2,3x106
Compressive strength
I
N / mm² DIN EN
ISO 604
100 130 180 200 240 270 130 160
Compressive strength
I
PSI DIN EN
ISO 604
14.500 18.850 26.100 29.000 34.800 39.150 18.850 23.200
Compressive strength
II
N / mm² DIN EN
ISO 604
55 100 170 70 90 180 80 110
Compressive strength
II
PSI DIN EN
ISO 604
7.900 14.500 24.650 10.150 13.050 24.100 11.600 15.950
Tensile strength
II
N / mm² DIN EN
ISO 527
120 170 185 80 100 100 110 150
Tensile strength
II
PSI DIN EN
ISO 527
17.400 24.650 26.825 11.600 14.500 14.500 15.950 21.750
Impact strength
I
kJ / m² DIN EN
ISO 179
46 56 40 33 37 15 40 52
Impact strength
II
kJ / m² DIN EN
ISO 179
40 50 32 28 33 12 36 48
Electrical
properties
UnitStandard        
Electrical strength
at 20° C 
II
kV/25
mm
IEC
60 243
70 70 45 70 70 45 80 80
Electrical strength
at 90° C
II
V/25
mm
IEC
60 243
70 70 32 70 70 32 70 70
Insulation resistance after treatment Ω cm IEC
60 093
1012 1012 1011 1012 1012 1011 1012 1012
Dielectric loss factor at 50 Hz 20° C tan δ DIN
53 483
0,01 0,01 0,01 0,01 0,01 0,01 0,01 0,01
Physical propertiesUnitStandard        
Oil absorption % IEC
61 061
30 10 < 2 25 10 < 2 25 10
Thermal conductivity at
20° C
W / mK DIN
52 612
0,2 0,2 0,3 0,2 0,2 0,3 0,2 0,2
Operating temperature continuous ° C - 105 105 90 105 105 90 105 105
Temperature limit for drying and impregnating ° C - 140 130 100 140 130 100 140 130

Length of test sample must be cut parallel with the main fibre.
*The mechanical values depend on the average ring diameter

I = vertical
II = parallel