  
Pau marfim (Balfourodendron riedelianum)
Family: Rutaceae
Common names: Farinha-seca, Gramixinga, Guataia, Guatambu, Guatambu blanco, Guatambu moroti, Ibira-nete, Ibiranoti, Ivorywood, Marfim, Moroti, Pao liso, Pao marfim, Pau liso, Pau marfim, Pequia marfim, Quatamba
Distributed in: Argentina, Brazil, Paraguay (Latin America)
Distribution overview: State of Sao Paulo, Brazil; northern and central Paraguay; and the Selva Misionera, Argentina.
Common uses: Agricultural implements, Axles, Bent Parts, Boat building (general), Boat building, Bobbins, Cabinetmaking, Canoes, Carvings, Chairs, Chests, Concealed parts (Furniture), Cooperages, Decorative plywood, Decorative veneer, Desks, Dining-room furniture, Domestic flooring, Dowell pins, Dowells, Drawer sides, Excelsior, Figured veneer, Fine furniture, Floor lamps, Flooring, Furniture , Furniture components, Furniture squares or stock, Furniture, Handles, Hatracks, Heavy construction, Interior construction, Interior trim, Joinery, Kitchen cabinets, Lifeboats, Light construction, Living-room suites, Marquetry, Mathematical instruments, Moldings, Musical instruments, Oars, Office furniture, Paneling , Parquet flooring, Plywood corestock, Plywood, Radio - stereo - TV cabinets, Rustic furniture, Sporting Goods, Textile equipment, Tool handles, Turnery
Product sources: The ITTO reports that a fairly important source of timber and is exported regularly. Its extensive growth range makes the timber available in adequate quantities for the European market, where Maobi is more popular. Supply in the U.S. market is generally limited since the wood is mainly used in small quantities for turning and carving. Price is generally high, but not prohibitive.
Environment profile: Extinct, Endangered, Vulnerable, or Rare within its range
Plentiful in Paraguay.
Tree size: Trunk diameter is 100-150 cm
Colors: the heart isWhite to cream, Yellow to golden-yellow to orangeand the sapwoodWhite to yellow, Yellow.The grain isWeak figure, the textureMediumand the lusterMedium
Natural durability: Very low natural resistance to decay and attack by termites , Vulnerable to insect attack
Odor: No specific smell or taste
Kiln Schedules: Us schedule T3-B2 has been suggested for 2.5 and 3 squares
Drying Defects: Severe surface checking, Slight twist/warp
Ease of Drying: Slowly
Tree Identification: Bole/stem form is straight
Comments: General finishing qualities are rated as good
Blunting Effect: Moderate to fairly sever blunting effect on cutting edges
Boring: Fair to good results
Carving: Good carving characteristics
Cutting Resistance: Low to medium sawing resistance
Gluing: Satisfactory gluing properties
Mortising: Fairly Easy to Very Easy
Moulding: Tearing may occur in moulding when irregular or interlocked grain is present
Movement in Service: Tearing may occur in moulding when irregular or interlocked grain is present
Nailing: Difficult to nail, Pre-Boring Recommended
Planing: Irregular grain may cause grain tearing in planning
Resistance to Impregnation: Sapwood is treatable
Response to hand tools: Responds well to hand tools
Routing recessing: Fairly Easy to Very Easy
Sanding: Fairly Easy to Very Easy
Veneering qualities: Suitable for peeling, Suitable for slicing
Steam bending: Very poor steam bending characteristics
Screwing: Good screwing properties, Pre-boring recommended; Turning: Fairly Easy to Very Easy
Painting: Accepts paint easily
; Polishing: Satisfactory; Staining: Staining (Characteristic) = coloured water-soluble extract; Varnishing: Satisfactory;
- Numerical data Metric
- Numerical data English
- Strength properties
- References
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 |
 |
 |
Item |
Green |
Dry |
Metric |
Specific Gravity |
0,64 |
0,7 |
|
Density |
|
801 |
kg/m3 |
Bending Strength |
973 |
1413 |
kg/cm2 |
Crushing Strength |
471 |
722 |
kg/cm2 |
Hardness |
|
901 |
kg |
Impact Strength |
|
|
cm |
Shearing Strength |
|
208 |
kg/cm2 |
Stiffness |
121 |
142 |
1000 kg/cm2 |
Tangential Shrinkage |
9 |
|
% |
Radial Shrinkage |
4 |
|
% |
Weight |
785 |
608 |
kg/m3 |
Maximum Load |
|
|
cm-kg/cm3 |
Toughness |
|
|
cm-kg |
Static Bending |
|
|
kg/cm2 |
|
 |  |  |  | Item | Green | Dry | English | Bending Strength | 13841 | 20104 | psi | Density | | 50 | lbs/ft3 | Hardness | | 1987 | lbs | Maximum Crushing Strength | 6700 | 10276 | psi | Shearing Strength | | 2960 | psi | Stiffness | 1724 | 2022 | 1000 psi | Specific Gravity | 0.64 | 0.7 | | Weight | 49 | 38 | lbs/ft3 | Radial Shrinkage | 4 | | % | Tangential Shrinkage | 9 | | % | Volumetric Shrinkage | 13 | | % | |
Density (dry weight) = 46-52 lbs/cu. ft. 0 Bending strength (MOR) = high 0 Max. crushing strength = high 1 Shrinkage, Tangential = large Shrinkage, Radial = moderate Shrinkage, Volumetric = fairly large Modulus of Elasticity (stiffness) = medium Shrinkage, Tangential = fairly large Shrinkage, Radial = fairly large Density (dry weight) = 53-60 lbs/cu. ft Hardness (side grain) = medium Hardness (side grain) = hard Shrinkage, Volumetric = large Shrinkage, Radial = small Shrinkage, Radial = large Shearing strength (parallel to grain) = high Modulus of Elasticity (stiffness) = high Bending strength (MOR) = medium Very high density Very heavy Shrinkage, Tangential = moderate Shearing strength (parallel to grain) = very high Modulus of Elasticity (stiffness) = low Max. crushing strength = very high High in density
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