Common Name(s): Karri oak, karri sheoak
Scientific Name: Allocasuarina decussata
Distribution: Southwestern Australia
Average Dried Weight: 52.4 lbs/ft3 (840 kg/m3)
Janka Hardness: 1,670 lbf (7,450 N)*
*Estimated hardness based on specific gravity
Shrinkage: Radial: 11.4%, Tangential: 14.0%,
Volumetric: 25.8%, T/R Ratio: 1.2*
Comments: Despite its name, this species is related to neither karri (Eucalyptus diversicolor) nor true oaks (Quercus genus). It is so named because it grows as a small to medium tree under the forest canopy of much-larger karri trees. Karri oak is actually in the unrelated Allocasuarina genus, known more commonly as sheoaks.
*Karri oak has suspiciously high values for its dimensional shrinkage (it may be that the values for ovendry shrinkage were misreported as 12% MC shrinkage).
Note: This is a truncated profile page. If you have any helpful info or experience with this wood species, feel free to leave a comment below and I’ll do my best to integrate any relevant data when I expand the page. ~Eric