Mastate (Poulsenia armata)
Family: Moraceae
Common names: Abababite, Carnero, Chirimoya, Cocua, Corbon, Cucua, Cucua damagua, Damagua, Majagua, Maragua, Mastate, Namagua, Tachore, Tumu, Yanchama
Distributed in: Bolivia, Colombia, Columbia, Costa Rica, Ecuador, Honduras, Mexico, Nicaragua, Panama, Peru (Central America, Latin America)
Distribution overview: The geographical range of the species extends from Vera Cruz, Mexico, through Central America and southward into Colombia, Ecuador and Bolivia in South America.
Common uses: Boxes and crates, Construction, Furniture, Interior construction, Light construction, Mine timbers, Plywood corestock, Toys, Turnery, Veneer
Environment profile: Status unknown in many of its growth areas
Tree size: Tree height is 20-30 m
Colors: the heart isRed, Yellow to golden-yellow to orangeand the sapwoodSame as heartwood, White to yellow.The grain isStraight to interlocked, the textureMediumand the lusterPronounced
Natural durability: Very durable, Very little natural resistance when in contact with ground
Odor: No specific smell or taste
Silica Content: Siliceous
LightInduced Color Change: Darker
Kiln Schedules: Dry at a moderate speed
Drying Defects: No surface checking, No twisting or warping
Ease of Drying: Moderately Difficult to Difficult
Tree Identification: Bole/stem form is buttressed
Comments: General finishing qualities are rated as poor
Blunting Effect: Severe and rapid blunting effect
Boring: Fairly easy to very easy
Carving: Fairly Easy to Very Easy
Cutting Resistance: Surfaces tend to be woolly
Mortising: Fairly Easy to Very Easy
Moulding: Fairly Easy to Very Easy
Movement in Service: Fairly Easy to Very Easy
Planing: Fairly Easy to Very Easy
Resistance to Impregnation: Resistant sapwood
Response to hand tools: Responds Readily
Routing recessing: Fairly Easy to Very Easy
Sanding: Fairly Easy to Very Easy
Turning: Interlocked grain & silica content affect results
- Numerical data Metric
- Numerical data English
- Strength properties
- References
 |
 |
 |
 |
Item |
Green |
Dry |
Metric |
Specific Gravity |
0,31 |
|
|
Density |
|
400 |
kg/m3 |
Bending Strength |
429 |
588 |
kg/cm2 |
Crushing Strength |
212 |
362 |
kg/cm2 |
Hardness |
|
148 |
kg |
Impact Strength |
|
|
cm |
Shearing Strength |
|
|
kg/cm2 |
Stiffness |
71 |
76 |
1000 kg/cm2 |
Tangential Shrinkage |
|
|
% |
Radial Shrinkage |
3 |
|
% |
Weight |
400 |
336 |
kg/m3 |
Maximum Load |
|
|
cm-kg/cm3 |
Toughness |
|
|
cm-kg |
Static Bending |
|
|
kg/cm2 |
|
 |  |  |  | Item | Green | Dry | English | Bending Strength | 6111 | 8372 | psi | Density | | 25 | lbs/ft3 | Hardness | | 327 | lbs | Maximum Crushing Strength | 3027 | 5157 | psi | Stiffness | 1017 | 1089 | 1000 psi | Specific Gravity | 0.31 | | | Weight | 25 | 21 | lbs/ft3 | Radial Shrinkage | 3 | | % | Tangential Shrinkage | 7 | | % | |
Bending strength (MOR) = low Hardness (side grain) = very soft Density (dry weight) = 23-30 lbs/cu. ft. Shrinkage, Tangential = moderate Shrinkage, Radial = small Modulus of Elasticity (stiffness) = very low Max. crushing strength = medium Max. crushing strength = low Low resistance to denting and marring Density = medium
Altamirano, S.V.,1992,Maderas de Bolivia (Caracteristicas y usos de 55 maderas tropicals,Camara Nacional ForestalChudnoff, M.,1984,Tropical Timbers of the World,U.S.A. Department of Agriculture, Forest Service, Forest Products,Laboratory, Madison.Little, E.L.,1948,A Collection of Tree Specimens from Western Ecuador,Caribbean Forester,9(3,pp215-98Peru - P.A.D.T.,1981,Descripcion general y anatomica de 105 Maderas del Grupo Andino,Junta del Acuerdo de Cartagena, P.A.D.T. Report, Junac, Lima, Peru.Record, S.J., Hess, R.W.,1940,American Woods of the Family Moraceae,Tropical Woods,8(61,pp11-54Record, S.J., Hess, R.W.,1943,Timbers of the New World,Yale University PressTakahashi, 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.4WCMC. 1992. Conservation Status Listing: Trees and Timbers of the World. World Conservation Monitoring Center (WCMC, Plants Program, 219 Huntingdon Road, Cambridge, CB3 ODL, United Kingdom.
|