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Sangre
Sangre (Pterocarpus vernalis)

Family: Dipterocarpaceae

Common names: Angu, Bebe, Drago, Huevos de gato, Lagunero, Mucunana, Mututi, Nogal falso, Palo de pollo, Palo Sangre Negro, Pau sangua, Sangre, Sangre de Drago, Sangrillo, Yaya sangre

Distributed in: Bolivia, Brazil, Columbia, Ecuador, Guyana, Jamaica, Mexico, Peru, Puerto Rico, Suriname, Venezuela (Central America, Latin America)

Distribution overview: Various species in the Pterocarpus genus are widely distributed in tropical America, occurring from the West Indies and Southern Mexico to northern Argentina. Some of the species are reported to grow in swamp lands, while others prefer uplands. Some are common on abandoned farmlands and cutover forests.

Common uses: Building construction, Building materials, Cabin construction, Construction, Core Stock, Decorative veneer, Domestic flooring, Factory construction, Factory flooring, Figured veneer, Flooring, Heavy construction, Mine timbers, Parquet flooring, Plain veneer, Sub-flooring, Veneer

Environment profile: Vulnerable

Tree size: Trunk diameter is 100-150 cm

Colors: the heart isWhitish, Yellowish tingeand the sapwoodWhite, Yellow.The grain isStraight to irregular, the textureMedium to coarseand the lusterMedium

Natural durability: Susceptible to insect attack, Very durable

Odor: No specific smell or taste

Kiln Drying Rate: Slow

Drying Defects: Slight twist/warp, Splitting

Ease of Drying: Slowly

Blunting Effect: Moderate

Boring: Good results

Carving: Good results

Cutting Resistance: Easy to saw

Gluing: Fairly Easy to Very Easy

Mortising: Responds well to mortising operations

Moulding: Very Good to Excellent

Movement in Service: Very Good to Excellent

Nailing: Fairly Difficult to Very Difficult

Planing: Very Good to Excellent

Resistance to Impregnation: Resistant sapwood

Response to hand tools: Responds Readily

Routing recessing: Very Good to Excellent Results

Sanding: Fairly good sanding characteristics

Veneering qualities: Converts readily into veneers

Steam bending: Very good

Screwing: Fairly Difficult to Very Difficult ; Turning: Very Good to Excellent Results

Polishing: Very Good to Excellent; Staining: Very Good to Excellent; Varnishing: Very Good to Excellent;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity 0,56 0,63
Density 512 kg/m3
Bending Strength 660 1103 kg/cm2
Crushing Strength 63 77 kg/cm2
Hardness 591 kg
Impact Strength cm
Shearing Strength 117 kg/cm2
Stiffness 108 137 1000 kg/cm2
Tangential Shrinkage 7 %
Radial Shrinkage 4 %
Weight 496 400 kg/m3
Maximum Load 0,63 1,4 cm-kg/cm3
Toughness 248 cm-kg
Static Bending 385 624 kg/cm2
Item Green Dry English
Bending Strength 9388 15700 psi
Crushing Strength 902 1098 psi
Density 32 lbs/ft3
Hardness 1303 lbs
Maximum Crushing Strength 4057 7242 psi
Shearing Strength 1676 psi
Static Bending 5488 8879 psi
Stiffness 1548 1960 1000 psi
Toughness 216 inch-lbs
Work to Maximum Load 9 20 inch-lbs/in3
Specific Gravity 0.56 0.63
Weight 31 25. lbs/ft3
Radial Shrinkage 4 %
Tangential Shrinkage 7 %
Volumetric Shrinkage 11 %

Weight = moderate
Resists denting and marring
Max. crushing strength = high
Hardness (side grain) = medium
Density = high
Compression strength (parallel to grain) = very high
Bending strength (MOR) = very high

Chudnoff, M.,1984,Tropical Timbers of the World,U.S.A. Department of Agriculture, Forest Service, Forest Products,Laboratory, Madison.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.
*Come interpretare i dati (manleva su eventuali imprecisioni)