Hevea brasiliensis
Rubber Wood (Hevea brasiliensis) is a soft wood that works easily but dents readily, with a Janka hardness of 420 lbf (1868 N) and a density of about 0.55 g/cm³. It originates from india and south asia.
With radial shrinkage of 2.3% and tangential shrinkage of 5.1% (a T/R ratio of 2.22), it is moderately stable — allow for seasonal movement in wide boards. Its fiber saturation point is around 28%, below which the wood begins to shrink and move as it dries.
These figures feed directly into the Vriksai calculators below — select Rubber Wood in any of them to get species-specific results for weight, moisture, shrinkage and hardness.