Clicking any heading in the main data area (at right) will scroll the page back to this top position. Use the following links to jump to the associated section in the main data. Comments Common Names Common Uses Countries of Distribution Cutting Resistance Distribution Overview Drying Defects Ease of Drying Environmental Profile Family Name Gluing Grain Heartwood Color Kiln Drying Rate Kiln Schedules Luster Nailing Natural Durability Numerical Data Odor Planing Polishing References Regions of Distribution Resistance to Impregnation Response to Hand Tools Sapwood Color Scientific Name Strength Properties Texture Trade Name Tree Size Varnishing		Scientific Name Tristania decorticata Trade Name Malabayabas Family Name Myrtaceae Common Names Brush Box, Malabayabas, Tiga, Tinadan Regions of Distribution Oceania and S.E. Asia Countries of Distribution  [VIEW MAP] Philippines Common Uses Barge fenders, Bearings & bushings, Building construction, Building materials, Bushing blocks, Cabin construction, Construction, Docks, Dockwork, Domestic flooring, Factory construction, Farm vehicles, Flooring, Harbor work, Heavy construction, Machinery parts, Marine construction, Mine timbers, Naval architecture, Parquet flooring, Poles, Pulley wheels, Raft floats, Rafts, Shipbuilding, Sub-flooring, Textile equipment, Utility poles, Wharf construction, Wheels Environmental Profile Vulnerable in parts of its natural habitat Data source is World Conservation Monitoring Center Vulnerable in the Phillipines Distribution Overview The genus Tristania is composed of small to medium-sized trees that occur in the Indo-Malayan region, extending into Australia, the Philippines, and Indonesia. Some species in the genus have also been introduced into other tropical regions. In the Philippines,Tristania decorticata is generally found on low ridges near the coast. Heartwood Color Red Brown Purple Pink Darkens after prolonged exposure Dark brown Black Sapwood Color Red Sapwood merges gradually into the heartwood Light brown It is usually about 0.4 to 1.1 inches (1 to 3 cm) wide. Grain Closed Figure Irregular Wavy Wavy Irregular Texture Medium Fine Dense Luster Glossy Natural Durability Moderately durable Resistant to termites Resistant to termite attack Resistant to attack by marine borers Odor No specific smell or taste Kiln Schedules T3 - C2 (4/4); T3 - C1 (8/4) US/T3 - C2 (4/4); T3 - C1 (8/4) U Drying Defects May warp May check The timber, especially backsawn material, is liable to warp and check during drying Ease of Drying Slowly Highly prone to degrade Difficult to season It requires a mild schedule when green. Air-drying to 30% moisture content before kiln-drying has been recommended to minimize defects Kiln Drying Rate Naturally dries slowly Tree Size Tree height is 10-20 m The trees often develop irregular boles and pronounced buttresses Comments Deposits - Vessels contain a reddish extractive. Cutting Resistance Easy to saw Cutting resistance with dry wood is moderate Gluing Fairly Easy to Very Easy Nailing Very Good to Excellent Results Fair to Good Results Pre-boring required Planing Fairly Easy to Very Easy Very Good to Excellent Results Fair to Good Results Difficult to plane The timber is described as hard and strong, and is rather difficult to work with ordinary machine tools in planing, turning, boring, moulding, and other operations Resistance to Impregnation Resistant heartwood Resistant sapwood Heartwood is extremely resistant Response to Hand Tools Easy to Work Responds poorly to hand tools Polishing Fair to Good Results Very Good to Excellent Results Varnishing Very Good to Excellent Results Fair to Good Results Fairly Easy to Very Easy Strength Properties Very heavy Very hard Very dense Resists denting and marring Compression strength (parallel to grain) = high Bending strength (MOR) = high It is exceptionally hard and very difficult to work with ordinary tools. It does not marr or dent, except under extreme conditions. The wood is exceptionally heavy. It weighs much more than Hard maple or Teak in the green or seasoned condition. The wood is very dense. Numerical Data Item Green Dry English Bending Strength 17005 26413 psi Crushing Strength 2209 3116 psi Density 62 lbs/ft3 Hardness 4258 lbs Maximum Crushing Strength 7533 13024 psi Shearing Strength 2439 psi Static Bending 9450 16099 psi Stiffness 2258 2780 1000 psi Toughness 641 inch-lbs Specific Gravity 0.89 1.03 Weight 61 50. lbs/ft3 Radial Shrinkage 5 % Tangential Shrinkage 9 % Item Green Dry Metric Bending Strength 1195 1857 kg/cm2 Crushing Strength 155 219 kg/cm2 Density 993 kg/m3 Hardness 1931 kg Maximum Crushing Strength 529 915 kg/cm2 Shearing Strength 171 kg/cm2 Static Bending 664 1131 kg/cm2 Stiffness 158 195 1000 kg/cm2 Toughness 738 cm-kg Specific Gravity 0.89 1.03 Weight 977 801. kg/m3 Radial Shrinkage 5 % References Chudnoff, M.,1984,Tropical Timbers of the World,U.S.A. Department of Agriculture, Forest Service, Forest Products,Laboratory, Madison. Desch, H. E. 1954. Manual of Malayan Timbers - Volume II. Malayan Forest Records, No. 15. Malaysia Publishing House Ltd., Singapore. Keating, W.G., Bolza, E.,1982,Characteristics properties and uses of timbers. South East Asia, Northern,Australia and the Pacific,C.S.I.R.O. Div. Chemical Technology,Inkata Press,1 Lauricio, F. M., Bellosillo, S. B., The Mechanical and Related Properties of Philippine Woods, The Philippine Lumber Journal, 12(5):A-H Schneider, E.E. 1916. Commercial Woods of the Philippines: Their Preparation and Uses. Bulletin No. 14. Department of the Interior, Bureau of Forestry, Manila, Philippines. WCMC. 1992. Conservation Status Listing - Trees and Timbers of the World. World Conservation Monitoring Center-Plants Programme, Cambridge, CB3 ODL, United Kingdom.