Cumaru

Scientific Name: Dipteryx odorata
Trade Name: Tonka
Family Name: Papilionaceae

The freshly cut heartwood is reddish brown or purplish brown with light yellowish-brown or purplish streaks. Exposure changes the color to uniform light brown or yellowish brown.

Item	Green	Dry	Measure
Bending Strength	19198	27236	psi
Density		65	lbs/ft3
Hardness		3111	lbs
Impact Strength		38	inches
Maximum Crushing Strength	9430	13561	psi
Shearing Strength		2419	psi
Stiffness	2660	3051	1000 psi
Toughness		260	inch-lbs
Work to Maximum Load	10	14	inch-lbs/in3
Specific Gravity	0.78	0.82
Weight	64	52	lbs/ft3
Radial Shrinkage	4		%
Tangential Shrinkage	7		%
Volumetric Shrinkage	12		%

Source: The Wood Explorer