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Barauna
Barauna (Schinopsis balanse)

Family: Anacardiaceae

Common names: Barauna, Barauva, Brauna, Cocobalo, Quebacho santiqueno, Quebracho chaqueno, Quebracho colorado, Quebracho colorado chaqueno, Quebracho hembra, Quebracho macho, Quebracho moro, Quebracho negro, Quebracho rubio, Quebracho santafecino, Quiebra hacha, Soto negro

Distributed in: Argentina, Bolivia, Brazil, Paraguay (Latin America)

Common uses: Axles, Bridge construction, Cabinetmaking, Flooring, Fuelwood, Furniture, Heavy construction, Joinery, Mine timbers, Piling, Poles, Posts, Railroad ties, Sporting Goods, Structural work, Turnery, Vehicle parts, Wharf construction

Tree size: Tree height is 20-30 m

Colors: the heart isReddish brown, Yellowand the sapwoodWhite to yellow, Yellow.The grain isStriped figure, the textureMediumand the lusterLustrous

Natural durability: Susceptible to insect attack, Very durable

Kiln Drying Rate: Naturally dries slowly

Drying Defects: Severe twisting/warping, Splitting

Ease of Drying: Slowly

Tree Identification: Bole/stem form is straight

Comments: General finishing qualities are rated as good

Cutting Resistance: Cutting Resistance with green wood is difficult

Gluing: Fairly Easy to Very Easy

Nailing: Pre-Boring Recommended

Planing: Fairly Difficult to Very Difficult

Resistance to Impregnation: Resistant sapwood

Response to hand tools: Fairly Difficult to Difficult to Work


Polishing: Very Good to Excellent;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity
Density 945 kg/m3
Bending Strength 804 1248 kg/cm2
Crushing Strength kg/cm2
Hardness kg
Impact Strength cm
Shearing Strength kg/cm2
Stiffness 1000 kg/cm2
Tangential Shrinkage %
Radial Shrinkage 6 %
Weight 929 913 kg/m3
Maximum Load cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English
Bending Strength 11442 17761 psi
Density 59 lbs/ft3
Weight 58 57 lbs/ft3
Radial Shrinkage 6 %
Tangential Shrinkage 9 %

Shrinkage, Tangential = large
Shrinkage, Radial = large
Density (dry weight) = 61-67 lbs/cu. ft
Shrinkage, Tangential = fairly large
Shrinkage, Radial = fairly large
Density (dry weight) = >75 lbs/cu. ft
Density (dry weight) = 67-75 lbs/cu.ft
Bending strength (MOR) = medium
Bending strength (MOR) = high

Berni, C.A., Bolza, E., Christensen, F.J.,1979,South American Timbers - The Characteristics, Properties and Uses of 190,Species,C.S.I.R.O Div. Building ResearchCelulosa Argentina,1973,Libro del Arbol,Celulosa Argentina Buenos Aires 3 VolsErfurth, T., Rusche, H.,1976,The Marketing of Tropical Wood B. Wood Species from S. American Tropical,Moist Forests,F.A.O. Forestry DepartmentKryn, J.M.,1954,Quebracho, Quebracho Colorado, Quebracho Macho-Schinopsis lorentzii Engl,and Schinopsis balansae Engl,U.S.A. Department of Agriculture, Forest Products Laboratory, Madison,Information Leaflet, Foreign Woods Report No 1969Record, S.J., Hess, R.W.,1943,Timbers of the New World,Yale University PressRecord, S.J., Mell, C.D.,1924,Timbers of Tropical America,Yale Univ. PressRecord, S.J.,1939,American Woods of the Family Anacardiaceae,Tropical Woods,8(60,pp11-45Tortorelli, L.,1956,Maderas y Bosques Argentinos,Editorial Acme S.A.C.I. Buenos AiresWoods, R.P.,1949,Timbers of South America,TRADA, Red Booklet SeriesWood, B., Calnan, D.,1976,Toxic Woods,British Journal of Dermat 94 Suppl. 13
*Come interpretare i dati (manleva su eventuali imprecisioni)