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Comments Common Names Common Uses Countries of Distribution Cutting Resistance Distribution Overview Drying Defects Ease of Drying Environmental Profile Family Name Grain Heartwood Color Kiln Drying Rate Kiln Schedules Natural Durability Natural Growth Defects Numerical Data Odor Painting Planing Polishing References Regions of Distribution Resin Content Resistance to Impregnation Response to Hand Tools Sanding Sapwood Color Scientific Name Strength Properties Texture Trade Name Tree Size Scientific Name Eucalyptus resinifera Trade Name Red mahogany Family Name Myrtaceae Common Names Australian red mahogany, Eucalipto, Eucalipto medicinal, Eucalypt, Eucalyptus, Kino eucalyptus, Kino gum eucalyptus, Red mahogany, Red mahogany eucalyptus, Red messmate, Red stringybark, Resinifera gum Regions of Distribution Oceania and S.E. Asia Countries of Distribution  [VIEW MAP] Australia Common Uses Agricultural implements, Bedroom suites, Boat building (general), Boat building, Boxes and crates, Brush backs & handles, Building construction, Building materials, Cabin construction, Cabinetmaking, Canoes, Carvings, Charcoal, Construction, Core Stock, Decorative plywood, Decorative veneer, Domestic flooring, Drawer sides, Excelsior, Factory construction, Factory flooring, Figured veneer, Flooring, Flooring: commercial heavy traffic, Flooring: industrial heavy traffic, Fuelwood, Furniture , Furniture, Heavy construction, Joinery (external): ground contact, Joinery, Kitchen cabinets, Lifeboats, Light construction, Living-room suites, Mine timbers, Office furniture, Paneling, Parquet flooring, Particleboard, Piling, Plain veneer, Plywood, Poles, Pulp/Paper products, Radio - stereo - TV cabinets, Railroad ties, Shipbuilding, Structural plywood, Sub-flooring, Tables, Turnery, Utility plywood, Vehicle parts, Veneer Environmental Profile Status has not been officially assessed Distribution Overview Occurs from Jervis Bay in New South Wales to Coen in Queensland, Australia. Heartwood Color Brown Red Pink Dark brown Reddish brown Sapwood Color Clearly differentiated from the heartwood Paler than heartwood Pale cream Grain Figure Interlocked Other (figure) Rippled (figure) Interlocked Rippled figure Other figure The grain is typically slightly interlocked, producing an attractive ripple figure. Texture Medium coarse Medium Coarse Fairly open Natural Growth Defects Gum/resin streaks Natural Durability Moderately resistant to termite (Isoptera) attack Susceptible to attack from powder post (Lyctid & Bostrychid) beetles Moderately durable Moderately durable Susceptible to marine borer attack Susceptible to attack from termites (Isoptera) Pinworms (ambrosia beetles) are commonly present Non durable Non durable Moderatly resistant to attack by termites Durable Durable Susceptible to attack by marine borers and pinhole borers Odor No specific smell or taste Resin Content Contains resin Kiln Schedules Kiln Drying Rate (in days) is fairly rapid Dry at a slow speed Drying Defects Collapse Internal Honeycombing Possible Expect slight collapse and honeycombing Slight twist/warp Slight surface checking No surface checking Moderate twist/warp Moderate surface checking Interlocking grain is prone to warp and checking and slight tendency to collapse Ease of Drying Easy Easy Dries slowly The material dries rather slowly but without any serious degrade. It sometimes requires a final humidity treatment to relieve drying stresses. Kiln Drying Rate Fairly rapid (11-17 days for boards under 32 mm, to 31-51 days for boards greater than 63 mm) Tree Size Tree height is 30-40 m Comments General finishing qualities are rated as good Hard and strong Stiff, yields oil high in cineol Tough Cutting Resistance Saws cleanly with moderate blutning of cutting edges Described as hard, stiff, and strong Cutting Resistance with dry wood is easy Planing Response to hand and machine tools is fairly good Planes well, to a good finish Resistance to Impregnation Sapwood is permeable Resistant Heartwood resistance to preservative treatment is very high Response to Hand Tools Moderate working qualities Easy to machine Sanding Contains alkaloids giving it good acid resistance Painting Good results Little or no surface prep required Polishing Good results Responds well to peeling after proper softening Strength Properties Max. crushing strength = high Density (dry weight) = 53-60 Shrinkage, Radial = small Bending strength (MOR) = medium Shrinkage, Tangential = moderate Shrinkage, Tangential = fairly large Shrinkage, Radial = moderate Shrinkage, Tangential = small Shrinkage, Tangential = large Density (dry weight) = 46-52 lbs/cu. ft. Bending strength (MOR) = low Shrinkage, Radial = very small Max crushing strength (stiffness) = very high Hardness (side grain) = medium Density (dry weight) = 38-45 lbs/cu. ft. Bending strength (MOR) = very low Numerical Data Item Green Dry English Bending Strength 12563 19384 psi Crushing Strength 1568 2136 psi Density 58 lbs/ft3 Hardness 2201 lbs Maximum Crushing Strength 6891 10281 psi Shearing Strength 2169 psi Static Bending 8222 12348 psi Stiffness 2044 2383 1000 psi Toughness 165 inch-lbs Weight 54 44 lbs/ft3 Radial Shrinkage 4 % Tangential Shrinkage 8 % Item Green Dry Metric Bending Strength 883 1362 kg/cm2 Crushing Strength 110 150 kg/cm2 Density 929 kg/m3 Hardness 998 kg Maximum Crushing Strength 484 722 kg/cm2 Shearing Strength 152 kg/cm2 Static Bending 578 868 kg/cm2 Stiffness 143 167 1000 kg/cm2 Toughness 190 cm-kg Weight 865 705 kg/m3 Radial Shrinkage 4 % References Banks, C.H., Schoeman, J.P., Otto, K.P.,1977,The Mechanical Properties of Timbers with particular reference to South,Africa,South African Forestry Research Institute Bulletin,(Ed.,Schoeman, J.P. 1973 & Otto K.P. 1976,No.48 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 Boas, I.H.,1947,The Commercial Timbers of Australia - Their Properties and Uses,Council for Scientific and Industrial Research, Melbourne Bolza, E., Keating, W.G.,1972,African Timbers - the Properties, Uses and Characteristics of 700 Species,C.S.I.R.O. Div. of Building Research Bolza, E., Kloot, N.H.,1963,The Mechanical Properties of 174 Australian Timbers,C.S.I.R.O. Division of Forest Products Technological Paper,No.25 Gay, F.J., Et al,1955,Standard laboratory colonies of termites for evaluating the resistance of,timber, timber preservatives and other materials to termite attack.,C.S.I.R.O., Australia Bulletin,No.277 Hillis, W.E. and A.G. Brown, Editors. 1984. Eucalyptus for Wood Production. Commonwealth Scientific and Industrial Research Organization, Academic Press, Australia. 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 Scott, M.H.,1935,Weights of South African Growth Timbers,South African Department of Agriculture and Forestry Bulletin,No.145,Forest Products Institute, Forestry Series No.1 Takahashi, A.,1978,Compilation of Data on the Mechanical Properties of Foreign Woods (Part,III) Africa,Shimane University, Japan, Research Report on Foreign Wood No. 7 The Australian Timber Journal & Building Products, Merchandiser,1969,Timber Durability and Preservation,Supplement to Australian Timber Journal 35(4) Tech. Timb. Guide No.8 Wallis, N.K. 1956. Australian Timber Handbook. Sponsored by The Timber Development Association of Australia. Angus & Robertson, Ltd., 89 Castlereagh Street, Sydney, Australia.