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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. Comments Common Names Common Uses Corrosive Properties Countries of Distribution Drying Defects Ease of Drying Family Name Grain Heartwood Color Luster Natural Durability Natural Growth Defects Numerical Data Planing References Regions of Distribution Response to Hand Tools Scientific Name Steam Bending Strength Properties Texture Trade Name Tree Size Scientific Name Eucalyptus calophylla Trade Name Marri Family Name Myrtaceae Common Names Marri, Red gum Regions of Distribution Africa, Oceania and S.E. Asia Countries of Distribution  [VIEW MAP] Australia, India, Nigeria, South Africa Common Uses Boat building: framing, Boxes and crates, Charcoal, Chemical derivatives, Heavy construction, Light construction, Pulp/Paper products, Tool handles, Vehicle parts Heartwood Color Brown Red Pink Yellow to golden-yellow to orange Grain Even Interlocked Straight Straight Interlocked Texture Medium Medium to coarse Fine Fine to medium Luster Lustrous Natural Growth Defects Gum and mineral deposits Natural Durability Durable Very durable Durable Very durable Non durable Corrosive Properties Non-corrosive Drying Defects Collapse Expect resin/gum exudation Ease of Drying Fairly Easy Tree Size Tree height is 20-30 m Tree height is 30-40 m Trunk diameter is 100-150 cm Comments General finishing qualities are rated as good Planing Easy to plane Response to Hand Tools Easy to machine Steam Bending Very Good to Excellent Results Fair to Good Results Strength Properties Shearing strength (parallel to grain) = low Modulus of Elasticity (stiffness) = high Max. crushing strength = high Hardness (side grain) = medium Bending strength (MOR) = medium Shrinkage, Tangential = large Shrinkage, Tangential = fairly large Shrinkage, Radial = large Shrinkage, Radial = fairly large Density (dry weight) = 46-52 lbs/cu. ft. Numerical Data Item Green Dry English Bending Strength 9310 14566 psi Density 47 lbs/ft3 Hardness 1658 lbs Maximum Crushing Strength 6899 9945 psi Shearing Strength 1560 psi Stiffness 2167 2494 1000 psi Weight 46 37 lbs/ft3 Radial Shrinkage 5 % Tangential Shrinkage 9 % Item Green Dry Metric Bending Strength 654 1024 kg/cm2 Density 753 kg/m3 Hardness 752 kg Maximum Crushing Strength 485 699 kg/cm2 Shearing Strength 109 kg/cm2 Stiffness 152 175 1000 kg/cm2 Weight 737 592 kg/m3 Radial Shrinkage 5 % References 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 Dadswell, H.E., Stewart, C.M.,1962,Chemical utilization of the eucalyptus 1 introducing review to 1956,Australia C.S.I.R.O. Division of Forest Products Technical Paper No.17 Gamble, J.S.,1902,A Manual of Indian Timbers,Sampson Low, Marston & Co. London 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 Purkayastha, S.K.,1982,Indian woods: Their identifications, properties and uses, Vol. IV,Myrlacene to Symploceae,Controller of Publications, New Delhi Sarlin, P.,1954,Bois et forets de la Nourelle Caledoiue,C.T.F.T. Publication 6 Streets, R.J.,1962,Exotic Forest Trees in the British Commonwealth,Clarendon Press Oxford The Australian Forestry Journal,1922,Marri (Eucalyptus calophylla) for boat knees,Australian Forestry Journal 5(8) p217