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GonfoloGonfolo
Gonfolo (Qualea albiflora)

Family: Vochysiaceae

Common names: Gonfolo, Grignon Fou, Gronfolo, Guaruba, Kouali, Mandio, Mandioqueira, Quaruba

Distributed in: Brazil, French Guiana, Guyana, Suriname (Latin America)

Distribution overview: Species in the genus Qualea are well represented throughout tropical America, from southern Mexico to Peru, and are most common in the Guianas and Brazil.

Common uses: Beams, Building construction, Building materials, Cabin construction, Chairs, Chests, Concealed parts (Furniture), Concrete formwork, Construction, Core Stock, Decks, Decorative plywood, Decorative veneer, Desks, Dining-room furniture, Domestic flooring, Dowell pins, Dowells, Drawer sides, Excelsior, Factory construction, Factory flooring, Figured veneer, Fine furniture, Floor lamps, Flooring, Form work, Foundation posts, Framing, Furniture , Furniture components, Furniture squares or stock, Hatracks, Heavy construction, Interior construction, Interior trim, Joinery, Joists, Kitchen cabinets, Millwork, Plywood, Veneer

Environment profile: Status has not been officially assessed

Tree size: Trunk diameter is 150-200 cm

Colors: the heart isPurple, Redand the sapwoodBrown - light grayish , Yellowish.The grain isStraight to interlocked, the textureMedium to coarseand the luster Some pieces may have a golden luster

Natural durability: Moderately durable, Moderately resistant to attack by termites

Odor: No specific smell or taste

Silica Content: Contains silica Silica accumulations of 0.10% (of ovendry weight) have been reported. Accumulations of 0.05% is generally regarded as the threshold above which machining properties become affected

Kiln Schedules: US=T3-D2/T3-D1

Kiln Drying Rate: Naturally dries slowly

Drying Defects: Staining, Warping can be expected

Ease of Drying: Slowly

Comments: Bears some resemblance to Spanish cedar (Cedrela )Varies widely in appearance and properties

Blunting Effect: High effect due to high silica content

Cutting Resistance: Difficult to saw

Gluing: Satisfactory gluing properties

Nailing: Fairly Difficult to Very Difficult

Planing: Qualea woods are generally difficult to plane, turn, mould, bore, and work in most machining operations, especially material containing roey grain. They tend to blunt cutting edges rather severely and rapidly because of high accumulations of silica

Resistance to Impregnation: Resistant sapwood

Response to hand tools: Fairly Difficult to Difficult to Work

Veneering qualities: Difficult to veneer

Steam bending: Very Good to Excellent Results


Painting: Fair to Good; Polishing: Fair to Good; Staining: Fair to Good;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity 0,49 0,54
Density kg/m3
Bending Strength 623 995 kg/cm2
Crushing Strength 46 50 kg/cm2
Hardness 404 kg
Impact Strength cm
Shearing Strength 104 kg/cm2
Stiffness 115 135 1000 kg/cm2
Tangential Shrinkage 8 %
Radial Shrinkage 4 %
Weight kg/m3
Maximum Load 0,49 0,63 cm-kg/cm3
Toughness 108 cm-kg
Static Bending 410 713 kg/cm2
Item Green Dry English
Bending Strength 8869 14161 psi
Crushing Strength 666 725 psi
Hardness 892 lbs
Maximum Crushing Strength 4694 8173 psi
Shearing Strength 1490 psi
Static Bending 5841 10143 psi
Stiffness 1637 1931 1000 psi
Toughness 94 inch-lbs
Work to Maximum Load 7 9 inch-lbs/in3
Specific Gravity 0.49 0.54
Radial Shrinkage 4 %
Tangential Shrinkage 8 %
Volumetric Shrinkage 11 %

Resists denting and marring
Fairly hard
Compression strength (parallel to grain) = high
Comparable to teak
Bending strength (MOR) = high
Air-Dried condition about 12% moisture content
Other species in this range include Teak, White oak, and Hard maple

Chichignoud, M., G. Deon, P. Detienne, B. Parant and P. Vantomme.1990.Tropical Timber Atlas of Latin America.International Tropical Timber Organization (ITTO, Centre Technique Forestier Tropical, Division of CIRAD, 45 bis Avenue de la Belle Gabrielle, Nogent-sur-Marne, CEDEX, France.Chudnoff, M.,1984,Tropical Timbers of the World,U.S.A. Department of Agriculture, Forest Service, Forest Products,Laboratory, Madison.Record, S.J. and R.W. Hess. 1943. Timbers of the New World. Published on the Charles Lathrop Pack Foundation, Yale University Press, New Haven CT.Wangaard, F.F., and A.F. Muschler. 1952. Tropical Woods - Properties and Uses of Tropical Woods, Volume III, No. 98. School of Forestry, Yale University, New Haven, Connecticut.
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