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Bayabochi
Bayabochi (Calycophyllum spruceanum)

Family: Rubiaceae

Common names: Bayabochi, Capirona, Capirona del bajo, Capirona negra, Corusicao, Guayabete, Guayabochi, Pau marfim, Pau mulato

Distributed in: Bolivia, Brazil, Colombia, Ecuador, Peru, Venezuela (Latin America)

Common uses: Boat building: decking, Flooring, Fuelwood, Furniture, Heavy construction, Light construction, Railroad ties, Textile equipment, Turnery, Vehicle parts

Environment profile: Vulnerable

Tree size: Trunk diameter is 150-200 cm

Colors: the heart isYellow, Yellow to golden-yellow to orangeand the sapwoodWhite to yellow, Yellow.The grain isStraight, the textureMediumand the lusterSlightly lustrous

Natural durability: Perishable, Susceptible to insect attack

Odor: Has an odor

Silica Content: High

Kiln Drying Rate: Very slow

Drying Defects: Ring Shakes, Splitting

Ease of Drying: Slowly

Tree Identification: Bole/stem form is straight

Comments: General finishing qualities are rated as good

Blunting Effect: Little

Boring: Fairly difficult to very difficult

Carving: Fairly Difficult to Very Difficult

Cutting Resistance: Fairly Difficult to Very Difficult to saw

Gluing: Fairly Easy to Very Easy

Mortising: Fairly Difficult to Very Difficult

Moulding: Very Good to Excellent

Movement in Service: Very Good to Excellent

Nailing: Fairly Easy to Very Easy, Very Good to Excellent

Planing: Fairly Easy to Very Easy

Resistance to Impregnation: Resistant sapwood

Response to hand tools: Responds Readily

Routing recessing: Fairly Difficult to Very Difficult

Sanding: Fairly Easy to Very Easy

Veneering qualities: Veneers easily, Veneers moderately easy

Steam bending: Unsuitable

Screwing: Fairly Easy to Very Easy, Very Good to Excellent Results; Turning: Fairly Difficult to Very Difficult

Painting: Fairly Easy to Very Easy; Polishing: Fair to Good; Staining: Very Good to Excellent; Varnishing: Very Good to Excellent;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity
Density 817 kg/m3
Bending Strength 954 1473 kg/cm2
Crushing Strength 485 699 kg/cm2
Hardness 1192 kg
Impact Strength cm
Shearing Strength kg/cm2
Stiffness 152 175 1000 kg/cm2
Tangential Shrinkage %
Radial Shrinkage 4 %
Weight 801 641 kg/m3
Maximum Load cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English
Bending Strength 13576 20956 psi
Density 51 lbs/ft3
Hardness 2628 lbs
Maximum Crushing Strength 6899 9945 psi
Stiffness 2167 2494 1000 psi
Weight 50 40 lbs/ft3
Radial Shrinkage 4 %
Tangential Shrinkage 8 %

Max. crushing strength = high
Bending strength (MOR) = high
Shrinkage, Radial = moderate
Density (dry weight) = 53-60 lbs/cu. ft.
Density (dry weight) = 46-52 lbs/cu. ft.
Shrinkage, Tangential = moderate
Shrinkage, Tangential = fairly large
Modulus of Elasticity (stiffness) = high
Hardness (side grain) = very hard
Hardness (side grain) = hard

Altamirano, S.V.,1992,Maderas de Bolivia (Caracteristicas y usos de 55 maderas tropicals,Camara Nacional ForestalDucke, A.,1943,The Most Important Woods of the Amazon Valley,Tropical Woods,12(74,pp1-15Erfurth, T., Rusche, H.,1976,The Marketing of Tropical Wood B. Wood Species from S. American Tropical,Moist Forests,F.A.O. Forestry DepartmentHighley, T.L., Scheffer, T.C.,1970,Natural Decay Resistance of 30 Peruvian Woods,U.S.A. Agriculture Department, Forest Service, Forest Products Laboratory,,Madison Research Paper,No.143Kukachka, B.F.,1970,Properties of Imported Tropical Woods,Forest Research Paper FPL 125Peru - P.A.D.T.,1981,Descripcion general y anatomica de 105 Maderas del Grupo Andino,Junta del Acuerdo de Cartagena, P.A.D.T. Report, Junac, Lima, Peru.U.S.D.A. Forest Service,1974,Wood Handbook,U.S.A. Department of Agriculture, Forest Service Handbook,72
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