Eucalyptus marginata
Jarrah (Eucalyptus marginata) is a medium-hardness wood balancing workability and wear resistance, with a Janka hardness of 960 lbf (4270 N) and a density of about 0.82 g/cm³. It originates from australia.
With radial shrinkage of 5% and tangential shrinkage of 7.7% (a T/R ratio of 1.54), it is very stable in service, with low risk of cupping or distortion. Its fiber saturation point is around 26%, below which the wood begins to shrink and move as it dries.
These figures feed directly into the Vriksai calculators below — select Jarrah in any of them to get species-specific results for weight, moisture, shrinkage and hardness.