Area of Distribution
Region of the Chaco in N- Argentina.

Logs
length to 4m, average diameter: 40 cm

Timber with fine and uniform texture, irregular grain. Heartwood light red, deepening to brick red, uniform or with black streaks.
Contains approx. 25% tannins. Quebracho is worldwide one of the most durable woods, heavy, tends to split, is very hard and strong. Due to the hardness it is very difficult to work, especially when dry, but takes a high natural polish.

Properties
Density .................................................................... 1.200 kg/m³
Shrinkage radial ............................................................... 3,9 %
Shrinkage tangential ......................................................... 5,6 %
shrinkage in volume ........................................................ 10,9 %
shrinkage ratio (T/R) ...................................................... 1,44
E-Modulus ............................................................ 13.420 N/mm²
bending strength ........................................................ 96 N/mm²
compression strength (parallel) ................................. 61 N/mm²
Hardness (Janka) ............................................... 11.282 N/cm²
Durability (fungi, insects) .................................... very durable

Uses
tannin extraction, railroad crossties, heavy construction, fence posts.