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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. Blunting Effect Boring Comments Common Names Common Uses Countries of Distribution Cutting Resistance Drying Defects Ease of Drying Family Name Gluing Grain Heartwood Color Kiln Drying Rate Kiln Schedules Luster Movement in Service Nailing Natural Durability Numerical Data Painting Planing Polishing References Regions of Distribution Resistance to Impregnation Resistance to Splitting Response to Hand Tools Sapwood Color Scientific Name Screwing Staining Steam Bending Strength Properties Texture Trade Name Tree Identification Tree Size Turning Veneering Qualities Scientific Name Eucalyptus microcorys Trade Name Eucalipto microcorys Family Name Myrtaceae Common Names Eucalipto microcorys, Microcorys gum, Microcorys-gom, Tallowwood Regions of Distribution Africa, Oceania and S.E. Asia Countries of Distribution  [VIEW MAP] Australia, India, Kenya, South Africa, Sri Lanka, Uganda Common Uses Boat building: decking, Bridge construction, Decks, Flooring, Flooring: industrial heavy traffic, Furniture, Handles: general, Heavy construction, Joinery (external): ground contact, Light construction, Marine construction, Piling, Poles, Posts, Railroad ties, Tool handles, Turnery, Vehicle parts, Wheel spokes, Wheels Heartwood Color Red Yellow Purple Brown Pink Orange Yellow to golden-yellow to orange Brown Pale brown Greenish to greyish Sapwood Color White Yellow Red Color not distinct from heartwood Paler than heartwood Clearly differentiated from the heartwood Grain Interlocked Closed Figure Wavy Distinct (figure) Interlocked Wavy Distinct figure Texture Coarse Medium coarse Luster Lustrous Natural Durability Durable Susceptible to insect attack Resistant to termites Moderately durable Non-resistant to powder post beetles Non-resistant to termites Very durable Susceptible to attack from powder post (Lyctid & Bostrychid) beetles Durable Resistant to attack from termites (Isoptera) Pinworms (ambrosia beetles) are commonly present Susceptible to attack from termites (Isoptera) Moderately resistant to termite (Isoptera) attack Kiln Schedules UK=C US=T3C2/T3C1 Fr=3 Dry at a slow speed UK=B US=T2C2/T2C1 Fr=2 Kiln Drying Rate (in days) is rather slow Drying Defects Splitting Checking Distortion Moderate end spitting Severe surface checking Moderate twist/warp Moderate surface checking Ease of Drying Variable Easy Difficult Kiln Drying Rate Slow (18-28 days for boards < 32 mm, to 52-84 days for boards >= 63 mm) Tree Identification Bole/stem form is straight Tree Size Tree height is 20-30 m Trunk diameter is 100-150 cm Tree height is 10-20 m Tree height is 30-40 m Comments General finishing qualities are rated as good Blunting Effect Moderate Blunting effect on sawing dry wood is mild Blunting effect on machining is fairly severe Blunting effect on sawing dry wood is moderate Blunting effect on machining is severe Boring Easy Cutting Resistance Easy to saw Cutting Resistance with dry wood is easy Gluing Fairly Easy to Very Easy Difficult to glue Movement in Service Unstable with Poor Stability - Large Movement Medium Stable Nailing Pre-Boring Recommended Fairly Easy to Very Easy Holds nails well Planing Fairly Difficult to Very Difficult Fairly Easy to Very Easy Planes well, to a good finish Resistance to Impregnation Resistant heartwood Resistant sapwood Permeable sapwood Heartwood is extremely resistant Sapwood is moderately resistant Resistance to Splitting Poor Response to Hand Tools Easy to Work Fairly Difficult to Difficult to Work Easy to machine Difficult to machine Moderate working qualities Screwing Fairly Easy to Very Easy Very Good to Excellent Results Fair to Good Results Turning Very Good to Excellent Results Fair to Good Results Easy to turn Good results Difficult to turn Veneering Qualities Suitable for peeling Suitable for slicing Veneers easily Veneers moderately easy Difficult to veneer Steam Bending Poor to Very Poor Results Moderate Painting Fair to Good Results Polishing Very Good to Excellent Results Fair to Good Results Good results Satisfactory results Staining Poor results Finish is generally satisfactory Finish is generally good Strength Properties Bending strength (MOR) = high Max. crushing strength = high Density (dry weight) = 61< Shearing strength (parallel to grain) = medium Hardness (side grain) = Hard Density (dry weight) = 53-60 Hardness (side grain) = medium Shearing strength (parallel to grain) = high Max crushing strength (stiffness) = very high Shrinkage, Tangential = large Density (dry weight) = 46-52 lbs/cu. ft. Bending strength (MOR) = medium Toughness -hammer drop = medium Shrinkage, Radial = fairly large Modulus of Elasticity (stiffness) = high Shrinkage, Volumetric = large Shrinkage, Tangential = fairly large Shearing strength (parallel to grain) = low Max. crushing strength = medium Density (dry weight) = 38-45 lbs/cu. ft. Shrinkage, Tangential = small Shrinkage, Tangential = moderate Hardness (side grain) = soft Density (dry weight) = 31-37 lbs/cu. ft. Numerical Data Item Green Dry English Bending Strength 14698 21970 psi Density 55 lbs/ft3 Hardness 2007 lbs Impact Strength 40 inches Maximum Crushing Strength 7385 10501 psi Shearing Strength 2311 psi Stiffness 2167 2494 1000 psi Weight 54 46 lbs/ft3 Radial Shrinkage 5 % Tangential Shrinkage 9 % Volumetric Shrinkage 14 % Item Green Dry Metric Bending Strength 1033 1544 kg/cm2 Density 881 kg/m3 Hardness 910 kg Impact Strength 101 cm Maximum Crushing Strength 519 738 kg/cm2 Shearing Strength 162 kg/cm2 Stiffness 152 175 1000 kg/cm2 Weight 865 737 kg/m3 Radial Shrinkage 5 % Tangential Shrinkage 9 % References Anderson, R.H.,1947,The Trees of New South Wales,New South Wales Department of Agriculture Australia - Forestry and Timber Bureau,1957,Forest Trees of Australia,Australia Interior Department, Forestry and Timber Bureau Australia - N.S.W. Forestry Commission,1988,Furniture Timbers of New South Wales,Forest Commission, N.S.W., Aust. Tech. Publication No.1 Banks, C.H. and J.P. Schoeman. 1963. Railway Sleeper and Crossing Timbers. Bulletin No. 41, Republic of South Africa. The Government Printer, Pretoria, South Africa. 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 Banks, C.H.,1954,The Mechanical Properties of Timbers with Particular Reference to those,grown in the Union of South Africa,Journal of the South African Forestry Association,No. 24 pp.44-65,[South,African Forestry Journal] Bois, P.J.,1966,The Strength Properties of Tanzania Timbers,Tanzania Forest Div. Util. Sec. Moshi Tech. Note, No.35 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 Bootle, K.R.,1971,The Commercial Timbers of New South Wales and their use,Angus & Robertson (publishers) PTY Ltd Brown, W.H.,1978,Timbers of the World, No. 8 Australasia,TRADA, Red Booklet Series Cause, M.L., Et al,1974,The Nomenclature, Density and Lyctus - Susceptibility of Queensland,Timbers,Queensland Forestry Department Pamphlet 13 Clifford, N.,1953,Commercial Hardwoods - Their Characteristics Identification and,Utilization,Sir Isaac Pitman & Sons Ltd. London Cox, H.A.,1939,A Handbook of Empire Timbers,Forest Products Research Laboratory, Princes Risborough Da Costa, E.W.B., Osborne, L.D.,1967,Comparative decay resistance of 26 New Guinea timber species in,accelerated laboratory tests,Comm. Forestry Review 46(1) pp63-74 Farmer, R.H.,1972,Handbook of Hardwoods,HMSO Forest Products Research Laboratory, U.K.,1945,A Handbook of Empire Timbers,Department of Scientific and Industrial Research Forest Products Research Forestry Commission of New South Wales,1987,Timbers used in New South Wales for Domestic Buildings,Forestry Commission of New South Wales, Technical Publication No.6 Forests Products Research Laboratory, U.K.,1956,A Handbook of Hardwoods,Forest Products Research Laboratory, Princes Risborough, Department of,Science and Industrial Research, Building Research Establishment Fouarge, J.,1970,Essais Physiques,Mecaniques et de Durabilite de Bois de la Republique,Democratique du Congo,I.N.E.A.C. Belgium Serie Technique,No.76 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 Hall, N., Et al,1970,Forest Trees of Australia,Australian Government Publishing Service, Canberra Howard, A.L.,1948,A Manual of Timbers of the World.,Macmillan & Co. Ltd. London 3rd ed. Kingston, R.S.T., Risdon, C.J.E.,1961,Shrinkage and Density of Australian and other South-West Pacific Woods,C.S.I.R.O. Division of Forest Products Technological Paper No.13 Kloot, N.H., Bolza, E.,1961,Properties of Timbers Imported into Australia,C.S.I.R.O. Forest Products Division Technological Paper,No.12 Lavers, G.M.,1983,The Strength Properties of Timber (3rd ed. revised Moore G.L.,Forest Products Research Laboratory, Princes Risborough, Building Research,Establishment Report (formerly Bulletin No.50) Patterson, D.,1988,Commercial Timbers of the World, 5th Edition,Gower Technical Press Rendle, B.J.,1969,World Timbers (3 Vols.,Ernest Benn Ltd. London Sao Paulo - Instituto de Pesquisas Tecnologicas,1956,Tabelas de Resultados obtidos para Madeiras Nacionais,Inst. Pesq. Tec. Sao Paulo, Brazil Bol., No.31(2nd Ed.) 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 Scott, M.H.,1953,Utilisation Notes on South African Timbers,South African Forestry Department Bulletin No.36 South African Lumber Millers Assoc.,1969,Notes on some Commercially Available Hardwoods,S.A.L.M.A. Timber Info. Centre Timber Technical Guide,No.1 Streets, R.J.,1962,Exotic Forest Trees in the British Commonwealth,Clarendon Press Oxford 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 Titmuss, F.H.,1965,Commercial Timbers of the World,Technical Press Ltd., London, 3rd edition