Milicia excelsa
Iroko (Milicia excelsa) is a medium-hardness wood balancing workability and wear resistance, with a Janka hardness of 563 lbf (2504 N) and a density of about 0.55 g/cm³. It originates from africa.
With radial shrinkage of 2.8% and tangential shrinkage of 3.8% (a T/R ratio of 1.36), it is very stable in service, with low risk of cupping or distortion. Its fiber saturation point is around 27%, below which the wood begins to shrink and move as it dries.
These figures feed directly into the Vriksai calculators below — select Iroko in any of them to get species-specific results for weight, moisture, shrinkage and hardness.