JOIXTSPECIES

Black walnut

Janka hardness	1,010 lb_f
Modulus of elasticity	1.68 ×10⁶ psi
Specific gravity (oven-dry / green vol.)	0.55
Total tangential shrinkage (green → 0% MC)	7.8 %
Total radial shrinkage (green → 0% MC)	5.5 %

USE IT

Try Black walnut in the Shrinkulator or Sagulator.

Source: USDA Forest Products Lab, Wood Handbook (FPL-GTR-190).