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Alo de calabaza
Alo de calabaza (Crescentia cujete)

Family: Bignoniaceae

Distributed in: Bahamas, Brazil, Cuba, Guadelope [France], Honduras, Mexico, Peru, Trinidad and Tobago, United States (Central America, Latin America, North America, Oceania and S.E. Asia)

Common uses: Boat building: framing, Charcoal, Fuelwood, Tool handles, Vehicle parts, Wheel spokes, Wheels

Environment profile: Rare

Tree size: Tree height is 0-10 m

Colors: the heart isPale brown, White to creamand the sapwoodPinkish, Same as heartwood., the textureMedium and the lusterLustrous

Natural durability: Very durable

Odor: Has an odor

Tree Identification: Bole/stem form is misshapen

Comments: General finishing qualities are rated as good

Boring: Very good to excellent results

Cutting Resistance: Easy to saw

Mortising: Very Good to Excellent

Resistance to Impregnation: Resistant sapwood

Response to hand tools: Moderate working qualities



  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity
Density 624 kg/m3
Bending Strength 654 1024 kg/cm2
Crushing Strength 275 449 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
Bending Strength 9310 14566 psi
Density 39 lbs/ft3
Maximum Crushing Strength 3916 6397 psi
Weight 38 31 lbs/ft3

Max. crushing strength = medium
Density (dry weight) = 46-52 lbs/cu. ft.
Density (dry weight) = 38-45 lbs/cu. ft.
Density (dry weight) = 31-37 lbs/cu. ft.
Bending strength (MOR) = medium

Little, E.L., Wadsworth, F.H.,1964,Common Trees of Puerto Rico and the Virgin Islands,U.S.A. Department of Agriculture, Agriculture Handbook,No.249Marshall, R.C.,1934,Trees of Trinidad and Tobago,Government Printer Port of Spain TrinidadRecord, S.J., Hess, R.W.,1940,American Woods of the Family Bignoniaceae,Tropical Woods,8(63,pp 9-38Record, S.J., Hess, R.W.,1943,Timbers of the New World,Yale University PressRecord, S.J.,1927,Trees of Honduras,Tropical Woods,10, pp10-47Sallenave, P.,1955,Proprietes Phyiques et Mecaniques des Bois Tropicaux de l'Union Francaise,C.T.F.TTakahashi, A.,1975,Compilation of data on the Mechanical Properties of Foreign Woods (Part 2,Central and South America,Shimane University, Japan, Research Report on Foreign Wood No.4
*Come interpretare i dati (manleva su eventuali imprecisioni)