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GuayacanGuayacan
Guayacan (Tabebuia guayacan)

Family: Bignoniaceae

Common names: Guayacan, Iapacho, Ipe

Distributed in: Colombia, Honduras, Mexico, Panama (Central America, Latin America)

Common uses: Agricultural implements, Axles, Boat building (general), Boat building: framing, Bridge construction, Cabinetmaking, Decks, Fishing rods, Flooring, Flooring: industrial heavy traffic, Furniture, Handles: general, Heavy construction, Joinery (external): ground contact, Ladders, Light construction, Mine timbers, Paneling, Piling, Posts, Railroad ties, Sporting Goods, Textile equipment, Vats, Vehicle parts, Wheel spokes, Wheels

Tree size: Trunk diameter is 150-200 cm

Colors: the heart isYellow, Yellow to golden-yellow to orangeand the sapwoodWell defined, White to yellow.The grain isStriped figure, the textureMediumand the lusterSlightly lustrous

Natural durability: Susceptible to attack from powder post (Lyctid & Bostrychid) beetles, Very durable

Kiln Schedules: Drying (speed) is fast

Drying Defects: Slight surface checking, Slight twist/warp

Ease of Drying: Thick Stock Requires Care

Tree Identification: Bole/stem form is straight

Comments: General finishing qualities are rated as good

Boring: Fairly easy to very easy

Carving: Fairly Easy to Very Easy

Gluing: Difficult to glue

Mortising: Fairly Easy to Very Easy

Moulding: Fairly Easy to Very Easy

Movement in Service: Fairly Easy to Very Easy

Nailing: Possible if prebored

Planing: Fairly Easy to Very Easy

Resistance to Impregnation: Heartwood is highly resistant

Response to hand tools: Responds Readily

Routing recessing: Fairly Easy to Very Easy

Steam bending: Poor

Turning: Good results

Polishing: Good; Staining: Staining (Characteristic) = coloured water-soluble extract ;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity
Density 897 kg/m3
Bending Strength 1150 1683 kg/cm2
Crushing Strength 558 784 kg/cm2
Hardness 1333 kg
Impact Strength cm
Shearing Strength 200 kg/cm2
Stiffness 161 187 1000 kg/cm2
Tangential Shrinkage %
Radial Shrinkage 6 %
Weight 881 817 kg/m3
Maximum Load 0,98 1,33 cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English
Bending Strength 16360 23941 psi
Density 56 lbs/ft3
Hardness 2940 lbs
Maximum Crushing Strength 7945 11159 psi
Shearing Strength 2854 psi
Stiffness 2304 2667 1000 psi
Work to Maximum Load 14 19 inch-lbs/in3
Weight 55 51 lbs/ft3
Radial Shrinkage 6 %
Tangential Shrinkage 9 %

Density (dry weight) = 61-67 lbs/cu. ft.
Max. crushing strength = high
Modulus of Elasticity (stiffness) = high
Density (dry weight) = 67-75 lbs/cu. ft.
Density (dry weight) = 53-60 lbs/cu. ft.
Bending strength (MOR) = very high
Bending strength (MOR) = high
Hardness (side grain) = very hard
Shrinkage, Tangential = fairly large
Shrinkage, Radial = large
Shearing strength (parallel to grain) = very high
Shearing strength (parallel to grain) = high
Modulus of Elasticity (stiffness) = very high
Max. crushing strength = very high
Density (dry weight) = >75 lbs/cu. ft.
Work to Maximum Load
Shrinkage, Tangential = large
Shrinkage, Radial = fairly large
Shearing strength (parallel to grain) = medium
Bending strength (MOR) = medium

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 ResearchBrown, W.H.,1978,Timbers of the World, No. 9 Central America and the Caribbean,TRADA, Red Booklet SeriesDickinson, F.E.,1949,Properties and Uses of Tropical Woods 1,Tropical Woods,13(95,pp1-140Erfurth, T., Rusche, H.,1976,The Marketing of Tropical Wood B. Wood Species from S. American Tropical,Moist Forests,F.A.O. Forestry DepartmentGarratt, G.A.,1933,Systematic anatomy of the woods of the Myristicacaeae,Tropical Woods,5(35,pp6-48Lamb, A.F.A., Wangaard, F.F.,1950,The Gluing Properties of certain Tropical American Woods,Yale Univ. School of Forestry Technical Report,4Record, S.J., Hess, R.W.,1940,American Woods of the Family Bignoniaceae,Tropical Woods,8(63,pp 9-38Wangaard, F.F., Chudnoff, M.,1950,The Steam Bending Properties of Certain Tropical American Woods,Yale Univ. School of Forestry Technical Report No. 6Wangaard, F.F., Muschler, A.F.,1952,Properties and Uses of Tropical Woods 3,Tropical Woods,14(98, pp1-190Woods, R.P.,1949,Timbers of South America,TRADA, Red Booklet Series
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