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Ajya
Ajya (Guazuma ulmifolia)

Family: Sterculiaceae

Common names: Ajya, Anhuiba, Aquich, Aquiche, Aquicho, Bastard cedar, Bay-cedar, Bois d'orme, Bois puant, Bois zombre, Bolaina, Boss d'orme, Bulines, Cabal-pixoy, Cablote, Caca de mico, Camba-aca, Cambeza de negro, Caulote, Cedre, Cedre jaune, Chicarion, Chicarron, Chicharron, Coco, Contamal, Cuahulote, Cuaulote, Diankra, Goea-azoema, Granadillo, Guacima, Guacima boba, Guacima cimarrona, Guacima de caballo, Guacimillo, Guacimo, Guacimo baba, Guacimo blanco, Guacimo colarado, Guacimo colorado, Guacimo de ternero, Guacimo dulce, Guacimo macho, Guazuma, Guazuma plum, Hetre gris, Hetre vert, Ibixuma, Inga negro, Inga-hu, Iumanasi, Jacocalalu, Kudzir, Lluicho-vainilla, Mahot baba, Mahot-vert, Majagua de toro, Majahua de toro, Marmelero, Motamba, Mutamba, Mutumba, Orme d'Amerique, Orme des antilles, Palote negro, Papayillo, Pigeon-wood, Pixoi, Pixoy, Seruru, Shumgin, Sungi, Sungin, Surruru, Tablote, Tapaculo, Tzuni, Tzuyui, Udzir, Uiguie, Vacima, West Indian elm, Wonan, Ya-ana, Yaco de venado, Yaco granadillo, Zam-mi

Distributed in: Argentina, Belize, Brazil, Cuba, Ecuador, French Guiana, Guyana, Honduras, Mexico, Netherlands, Peru, Puerto Rico [US], Trinidad and Tobago, Venezuela (Central America, Latin America, Oceania and S.E. Asia)

Common uses: Boxes and crates, Charcoal, Cooperages, Fuelwood, Furniture, Heavy construction, Joinery (external): ground contact, Joinery, Light construction, Musical instruments: strings, Poles, Posts, Sporting Goods, Tool handles, Vehicle parts

Tree size: Tree height is 20-30 m

Colors: the heart isRed, Yellowand the sapwoodPaler than heartwood, Same as heartwood.The grain isStraight, the textureFine

Natural durability: Susceptible to insect attack, Very durable

Drying Defects: Splitting

Ease of Drying: Moderately Difficult to Difficult

Comments: General finishing qualities are rated as good

Cutting Resistance: Fairly Difficult to Very Difficult to saw

Gluing: Fairly Easy to Very Easy

Nailing: Easy to nail

Response to hand tools: Fairly Difficult to Difficult to Work



  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity
Density 512 kg/m3
Bending Strength 933 1394 kg/cm2
Crushing Strength 275 449 kg/cm2
Hardness kg
Impact Strength cm
Shearing Strength kg/cm2
Stiffness 117 135 1000 kg/cm2
Tangential Shrinkage %
Radial Shrinkage 3 %
Weight 496 400 kg/m3
Maximum Load cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English
Bending Strength 13276 19839 psi
Density 32 lbs/ft3
Maximum Crushing Strength 3916 6397 psi
Stiffness 1665 1923 1000 psi
Weight 31 25 lbs/ft3
Radial Shrinkage 3 %
Tangential Shrinkage 7 %

Bending strength (MOR) = medium
Shrinkage, Tangential = moderate
Shrinkage, Radial = small
Modulus of Elasticity (stiffness) = medium
Max. crushing strength = medium
Density (dry weight) = 31-37 lbs/cu. ft.
Bending strength (MOR) = very high
Bending strength (MOR) = high

Erfurth, T., Rusche, H.,1976,The Marketing of Tropical Wood B. Wood Species from S. American Tropical,Moist Forests,F.A.O. Forestry DepartmentGriffiden, K.,1967,Mechanical, physical and other properties of some West Irian (New Guinea,wood species and their suitability for the wood working industries in the,Netherlands,Forest Products Research Institute, TNO, Delhi, NetherlandsLittle, E.L., Wadsworth, F.H.,1964,Common Trees of Puerto Rico and the Virgin Islands,U.S.A. Department of Agriculture, Agriculture Handbook,No.249Little, E.L.,1948,A Collection of Tree Specimens from Western Ecuador,Caribbean Forester,9(3,pp215-98Marshall, R.C.,1934,Trees of Trinidad and Tobago,Government Printer Port of Spain TrinidadMarshall, R.C.,1939,Silviculture of the trees of Trinidad and Tobago - British West Indies,O.U.P.,LondonNation Research Council,1980,Firewood Crops Shrub and Tree Species for Energy Production,National Academy of Sciences, Washington D.C.Record, 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.,1927,Trees of Honduras,Tropical Woods,10, pp10-47Swabey, C.,1941,The Principal Timbers of Jamaica,Department of Science and Agriculture Jamaica Bulletin No.29Takahashi, 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
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