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Purguillo blanco
Purguillo blanco (Tabebuia stenocalyx)

Family: Bignoniaceae

Common names: Purguillo blanco, Tabebuia blanco, White tabebuia, Wild calabash

Distributed in: French Guiana, Guyana, Trinidad and Tobago, Venezuela (Latin America, Oceania and S.E. Asia)

Common uses: Agricultural implements, Boat building (general), Boat building: decking, Boat building: framing, Boxes and crates, Flooring, Furniture, Joinery, Paneling, Sporting Goods, Veneer: decorative

Environment profile: Rare

Tree size: Trunk diameter is 300-350 cm

Colors: the heart isYellow, Yellow to golden-yellow to orangeand the sapwoodWhite, Yellow.The grain isStraight, the textureResinous and oilyand the lusterLustrous

Natural durability: Susceptible to attack from termites (Isoptera), Very durable

Odor: Has an odor

Kiln Schedules: Dry at a slow speed

Kiln Drying Rate: Naturally dries at a moderate speed

Drying Defects: Splitting, Uneven Moisture Content

Ease of Drying: Thick Stock Requires Care

Tree Identification: Bole/stem form is fluted

Comments: General finishing qualities are rated as good

Boring: Easy

Cutting Resistance: Cutting Resistance with green wood is easy

Gluing: Fairly Easy to Very Easy

Mortising: Fairly Easy to Very Easy

Moulding: Fairly Easy to Very Easy

Movement in Service: Fairly Easy to Very Easy

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: Fairly Difficult to Difficult to Work

Sanding: Easy to sand

Veneering qualities: Veneers easily, Veneers moderately easy

Steam bending: Fair to Good Results

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

Painting: Very Good to Excellent; Polishing: Good;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity
Density 641 kg/m3
Bending Strength 854 1323 kg/cm2
Crushing Strength 485 699 kg/cm2
Hardness kg
Impact Strength cm
Shearing Strength kg/cm2
Stiffness 117 135 1000 kg/cm2
Tangential Shrinkage %
Radial Shrinkage 4 %
Weight 624 496 kg/m3
Maximum Load cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English
Bending Strength 12154 18826 psi
Density 40 lbs/ft3
Maximum Crushing Strength 6899 9945 psi
Stiffness 1665 1923 1000 psi
Weight 39 31 lbs/ft3
Radial Shrinkage 4 %
Tangential Shrinkage 7 %

Density (dry weight) = 38-45 lbs/cu. ft.
Bending strength (MOR) = high
Shrinkage, Tangential = moderate
Shrinkage, Radial = moderate
Modulus of Elasticity (stiffness) = medium
Max. crushing strength = high
Bending strength (MOR) = medium

Brown, W.H.,1978,Timbers of the World, No. 9 Central America and the Caribbean,TRADA, Red Booklet SeriesErfurth, T., Rusche, H.,1976,The Marketing of Tropical Wood B. Wood Species from S. American Tropical,Moist Forests,F.A.O. Forestry DepartmentRecord, S.J., Hess, R.W.,1940,American Woods of the Family Bignoniaceae,Tropical Woods,8(63,pp 9-38Takahashi, 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)