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Arvore-da-chuva
Arvore-da-chuva (Melanoxylon brauna)

Family: Leguminosae

Common names: Arvore-da-chuva, Barauna, Barauna parda, Brauna, Brauna preta, Canela amarela, Garauna, Grauna, Grauna parda, Grauna preta, Guirauma, Ibira-una, Ibirauna, Ibirauva, Maria preta, Maria-preta de mata, Maria-preta do campo, Muirauna, Parovauna, Perovauna, Rabo de macaco

Distributed in: Brazil (Latin America)

Common uses: Bridge construction, Flooring, Furniture, Heavy construction, Joinery (external): ground contact, Mine timbers, Posts, Railroad ties, Structural work, Vehicle parts, Wheel spokes

Tree size: Tree height is 30-40 m

Colors: the heart isRed, Whiteand the sapwoodWhite, White to yellow.The grain isStraight, the textureMedium to coarseand the lusterMedium

Natural durability: Perishable, Very durable

Tree Identification: Bole/stem form is straight

Comments: General finishing qualities are rated as good

Response to hand tools: Easy to machine



  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity
Density 817 kg/m3
Bending Strength kg/cm2
Crushing Strength kg/cm2
Hardness kg
Impact Strength cm
Shearing Strength kg/cm2
Stiffness 1000 kg/cm2
Tangential Shrinkage %
Radial Shrinkage %
Weight kg/m3
Maximum Load cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English
Density 51 lbs/ft3
Weight 50 49 lbs/ft3

Density (dry weight) = 67-75 lbs/cu.ft
Density (dry weight) = 61-67 lbs/cu. ft
Density (dry weight) = 53-60 lbs/cu. ft

Gomes Mauro, J.,1978,Caracteres Silviculturais & Dendrologicos da Brauna (Melanoxylon brauna,Brasil Florestal 9(36) pp37-41Howard, A.L.,1948,A Manual of Timbers of the World.,Macmillan & Co. Ltd. London 3rd ed.Mainieri, C.,1970,Madeiras Brasilieras,Sao Paulo Secretaria da Agricultra, Institulo FlorestralRecord, 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. PressRizzini, C.T.,1978,Arvores e Madeiras Uteis do Brasil: Manual de Dendrologia Brasileira,Editora Edgard Blucher LTDA BrazilWood, B., Calnan, D.,1976,Toxic Woods,British Journal of Dermat 94 Suppl. 13
*Come interpretare i dati (manleva su eventuali imprecisioni)