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Blunting Effect Boring Carving Certified Source Common Names Common Uses Countries of Distribution Cutting Resistance Drying Defects Ease of Drying Environmental Profile Family Name Gluing Grain Heartwood Color Kiln Drying Rate Kiln Schedules Luster Mortising Moulding Movement in Service Nailing Natural Durability Numerical Data Odor Painting Planing Polishing References Regions of Distribution Resistance to Impregnation Response to Hand Tools Routing & Recessing Sanding Sapwood Color Scientific Name Screwing Staining Steam Bending Strength Properties Texture Trade Name Tree Identification Tree Size Turning Varnishing Veneering Qualities Scientific Name Iryanthera lancifolia Trade Name Kirikaua Family Name Myristicaceae Common Names Kirikaua, Kirikawa, Marbuk, Moussigot rouge, Savannah dalli, Swamp kirikaua, Ucuhuba-rana, Weputana Regions of Distribution Latin America Countries of Distribution  [VIEW MAP] Brazil, Guyana, Peru, Suriname Common Uses Boxes and crates, Cabinetmaking, Concrete formwork, Cooperages, Furniture, Handles: general, Joinery, Ladders, Light construction, Millwork, Oars, Plywood, Turnery, Vats, Veneer Environmental Profile Abundant/Secure Rare Heartwood Color Brown Purple Black Red Green/grey Brown Pale brown White to cream Pale red to pink Dark brown Yellow to golden-yellow to orange Sapwood Color Yellow White Brown Green/Grey Red Different than heartwood White to yellow Color not distinct from heartwood Grain Figure Straight Interlocked Even Growth rings (figure) Other (figure) Stripe (figure) Straight Interlocked Striped figure Other figure Clear growth rings (figure) Texture Coarse Fine Medium Even or uniform Medium Fine to medium Fine Medium coarse to coarse Luster Low Slightly lustrous Lustrous Natural Durability Very durable Durable Moderately durable Resistant to termites Susceptible to attack from powder post (Lyctid & Bostrychid) beetles Non durable Susceptible to attack from termites (Isoptera) Odor Has an odor Kiln Schedules Drying (speed) is fast Drying Defects Collapse Internal Honeycombing Possible Ring Shakes Discoloration Checking Slight twist/warp Moderate surface checking Slight surface checking Slight spring/bow Slight end splitting No cupping, generally Moderate end spitting Ease of Drying Fairly Easy Slowly Moderately Difficult to Difficult Moderate Easy Difficult Kiln Drying Rate Naturally dries slowly Tree Identification Bole/stem form is not buttressed Bole/stem form is straight Tree Size Trunk diameter is 150-200 cm Tree height is 30-40 m Bole length is 10-20 m Trunk diameter is 100-150 cm Tree height is 50-60 m Tree height is 40-50 m Bole length is 20-30 m Tree height is 20-30 m Sapwood width is 5-10 cm Tree height is 10-20 m Sapwood width is 0-5 cm Trunk diameter is 200-250 cm Certified Source Certified Source Blunting Effect Moderate Boring Very good to excellent results Fairly easy to very easy Easy Carving Fair to Good Results Fairly Easy to Very Easy Cutting Resistance Easy to saw Cutting Resistance with green wood is easy Gluing Fairly Easy to Very Easy Fair to Good Results Mortising Very Good to Excellent Results Fairly Easy to Very Easy Moulding Poor to Very Poor Results Fairly Difficult to Very Difficult Movement in Service Excellent Stability - Small Movement Fair to Good Stability - Medium Movement Nailing Fair to Good Results Planing Fair to Good Results Fairly Easy to Very Easy Planes well, to a good finish Resistance to Impregnation Sapwood is permeable Heartwood is permeable Response to Hand Tools Easy to Work Responds Readily Fairly Difficult to Difficult to Work Easy to machine Routing & Recessing Fair to Good Results Fairly Easy to Very Easy Sanding Very Good to Excellent Results Fairly Easy to Very Easy Screwing Fair to Good Results Fairly Easy to Very Easy Turning Very Good to Excellent Results Fairly Easy to Very Easy Fair to Good Results Veneering Qualities Suitable for peeling Suitable for slicing Veneers easily Veneers moderately easy No drying degrade Good gluing qualities Suitable for peeling No drying degrade. Dries flat without splitting Easy to cut Bolt preparation requires steaming Steam Bending Fair to Good Results Fairly Easy to Very Easy Painting Fair to Good Results Very Good to Excellent Results Fairly Easy to Very Easy Polishing Fair to Good Results Very Good to Excellent Results Fairly Easy to Very Easy Good results Staining Fair to Good Results Very Good to Excellent Results Fairly Easy to Very Easy Surface Preparation Varnishing Surface Preparation Very Good to Excellent Results Fairly Easy to Very Easy Strength Properties Density (dry weight) = 38-45 lbs/cu. ft. Density (dry weight) = 31-37 lbs/cu. ft. Work to Maximum Load = very low Shrinkage, Tangential = large Modulus of Elasticity (stiffness) = medium Max. crushing strength = medium Hardness (side grain) = soft Density (dry weight) = 46-52 lbs/cu. ft. Density (dry weight) = 23-30 lbs/cu. ft. Shrinkage, Radial = large Shrinkage, Radial = fairly large Shearing strength (parallel to grain) = very low Shearing strength (parallel to grain) = low Bending strength (MOR) = medium Bending strength (MOR) = low Numerical Data Item Green Dry English Bending Strength 7711 12078 psi Density 36 lbs/ft3 Hardness 995 lbs Maximum Crushing Strength 3916 6397 psi Shearing Strength 1221 psi Stiffness 1665 1923 1000 psi Work to Maximum Load 5 7 inch-lbs/in3 Weight 35 27 lbs/ft3 Radial Shrinkage 5 % Tangential Shrinkage 10 % Item Green Dry Metric Bending Strength 542 849 kg/cm2 Density 576 kg/m3 Hardness 451 kg Maximum Crushing Strength 275 449 kg/cm2 Shearing Strength 85 kg/cm2 Stiffness 117 135 1000 kg/cm2 Work to Maximum Load 0.35 0.49 cm-kg/cm3 Weight 560 432 kg/m3 Radial Shrinkage 5 % References Berni, C.A., Bolza, E., Christensen, F.J.,1979,South American Timbers - The Characteristics, Properties and Uses of 190,Species,C.S.I.R.O Div. Building Research Fanshawe, D.B.,1954,Forest Products of British Guiana Part 1 Principal Timbers,Forest Department British Guiana Forestry Bulletin (New Series 2nd,Edition,No.1 France - C.T.F.T./C.T.B.,1982,Guide pour le Choix des Essences Deroulables-pour la fabrication du,contreplaque,C.T.F.T./C.T.B. France Guyana Forest Department,1971,Kirikaua (Iryanthera lancifolia,Guyana Forest and Timber (formerly Guyana Forest Industries Newsletter) 1:,1, 2. Polak, A.M.,1992,Major Timber Trees of Guyana A Field Guide,The Tropenbos Foundation Wageningen, The Netherlands Wangaard, F.F., W.L. Stern, and S.L. Goodrich. 1955. Tropical Woods - Properties and Uses of Tropical Woods, Volume V, No. 103. School of Forestry, Yale University, New Haven, Connecticut.