Quebracho wood is one of the the hardest woods known, at least according to the Janka Scale. Just below the Australian oak. In fact, its name comes from the word “axbreaker”, which gives us an idea of ​​its extreme resistance.

exist different species: Santiago’s red quebracho, Chaco’s red or white. The latter is not only lighter in color, but also considerably lighter. All of these species are typical of South America, and we can find them in countries like Argentina or Paraguay. The common name of the genus is «Schinopsis«.

Of all of them, it is the red quebracho (Schinopsis balansae) which is usually referred to simply as quebracho, and is also the one we’ll refer to from now on.

Its growth is slow and, due to overexploitation during the last century, its population has been greatly reduced.

Features of Quebracho wood

Color: The hard has reddish and brown tones, darker as we move inside the trunk. It darkens even more with exposure to sunlight. The sapwood is light yellow. The sapwood is easily distinguished from the heartwood.

Fiber: Irregular and sometimes interlaced.

Grain: Thin and uniform.

Density: Approximate density of 1,235-1250 kg / m3.

Toughness: Very hard wood, in fact it is one of the hardest woods in the world.

Durability: It is considered almost rotten. Its durability is very high, even when buried. Very durable against fungi and resistant to attack by insects.

Dimensional stability:

  • Volumetric contraction coefficient: –

Mechanical properties:

  • Compressive strength: 855 kg / cmtwo
  • Static flexural strength: 1,400 kg / cmtwo
  • Modulus of elasticity: 154,000 kg / cmtwo

Workability: Produces great wear on tools

  • Sawn. No problems, except those derived from its hardness.
  • Drying. Slow. There is a risk of cracking and deformation.
  • Brushed. Without difficulty, beyond those derived from its hardness.
  • Glued. Smoothly.
  • Nailed and screwed.
  • Finish. Smoothly.

Price: The price of quebracho wood is high outside its areas of origin. It is considered an exotic wood.

Him heartwood is very rich in tannins, above 30%.

Uses of Quebracho wood Colorado

colorado quebracho
  • Woodwork.
  • Furniture.
  • Construction of houses and infrastructure such as bridges.
  • Railway sleepers.
  • Cattle fences.
  • The great amount of tannins it has made, one of the main uses of quebracho has been the tanning of leather. It is also one of the reasons for overexploitation.
  • Widely used as charcoal or firewood for the preparation of various dishes, especially meat.
  • Within the cultures of the region, quebracho wood has medicinal and even ritual uses.