Oak

Overview

Quercus robur L. / Quercus petraea Liebl.
Normal density (u=12%):	430...690...9630 kg/m3
Durability:	durable - slightly durable (heartwood)
Treatability:	sapwood: easy / heartwood: very difficult

 

Physical properties

Dry density (u=0%):	390...650...930 kg/m3
Normal density (u=~12%):	430...690...9630 kg/m3
Shrinkage:	longitudinal 0.4% radial 4.0 ... 4.6% tangential 7.8 ... 10.0% volume 12.6 ... 15.6%
Compression strength	Q. robur 54...61...67 N/mm2 Q. petraea 48...65...70 N/mm2
Bending strength	Q. robur 74...88...105 N/mm2 Q. petraea 78...110...117 N/mm2
Tensile strength	parallel 50...90...180 N/mm2 perpendicular 2.6 ... 4.0 ...9.6 N/mm2
Brinell hardness	parallel ~66 N/mm2 perpendicular ~34/mm2
E-Modulus (bending)	Q. robur 10000...11700...13200 N/mm2 Q. petraea 9200...13000...13500 N/mm2

_{Source: Wagenführ R. (1996) Holzatlas, ISBN 3-446-00900-0}

Chemical composition

Hemicelluloses	19 ... 25.5 %
Cellulose	37.6 ... 42.8 %
Lignin	24.9 ... 34.3 %
Extractives	1.8 ... 4.7 %
Ash	0.3 ... 0.6 %

_{Source: Wagenführ R. (1996) Holzatlas, ISBN 3-446-00900-0}

Properties of European oak

Version 17.12.2024

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