Lemon scented gum (Eucalyptus citriodora)
Family: Myrtaceae
Common names: Eucalyptus, Lemon eucalyptus, Lemon scented gum, Spotted gum, Spotted iron gum
Distributed in: Australia, Brazil, Congo, Fiji [Polynesia], Fiji, India, Madagascar, South Africa (Africa, Latin America, Oceania and S.E. Asia)
Distribution overview: Occurs naturally only on the central and northern coasts of Queensland, Australia, but does well in much of Africa, Brazil, California, Hawaii, India and even Portugal.
Common uses: Agricultural implements, Artificial limbs, Axles, Baseball bats, Bedroom suites, Boat building (general), Boat building, Boat building: framing, Boat building: planking, Boxes and crates, Bridge construction, Broom handles, Brush backs & handles, Building construction, Building materials, Cabin construction, Cabinetmaking, Canoes, Carvings, Charcoal, Construction, Cooperages, Decks, Domestic flooring, Drawer sides, Factory construction, Flooring, Flooring: commercial heavy traffic, Flooring: industrial heavy traffic, Furniture , Furniture, Handles, Handles: general, Handles: woodworking tools, Heavy construction, Joinery, Kitchen cabinets, Ladders, Lifeboats, Living-room suites, Medicinal use, Mine timbers, Office furniture, Paneling, Parquet flooring, Particleboard, Piling, Plywood, Pulp/Paper products, Radio - stereo - TV cabinets, Railroad ties, Shafts/Handles, Shipbuilding, Sporting Goods, Sub-flooring, Tool handles, Turnery, Vehicle parts, Veneer, Wharf construction, Wheel spokes, agricultural implements
Environment profile: Status has not been officially assessed
Tree size: Trunk diameter is 200-250 cm
Colors: the heart isWhite, Yellowand the sapwoodWide, Yellow.The grain isWavy, the textureMedium to coarseand the lusterMedium
Natural durability: Susceptible to marine borer attack, Very durable
Odor: No specific smell or taste
Kiln Drying Rate: Naturally dries slowly
Drying Defects: Slight collapse and honeycomb, Splitting
Ease of Drying: Variable results.
Tree Identification: Bole/stem form is straight
Comments: The tree is reported to yield good honey, and the leaves contain oil which is used for medicinal purposes. The species is closely related to Spotted irongum (Eucalyptus maculata ).
Blunting Effect: Slight effect
Boring: Good results
Carving: Fairly Difficult to Very Difficult
Cutting Resistance: Fairly Difficult to Very Difficult to saw
Gluing: Moderate gluing properties
Mortising: Fairly Difficult to Very Difficult
Moulding: Good moulding properties
Movement in Service: Good moulding properties
Nailing: Fairly Difficult to Very Difficult, Fairly Easy to Very Easy
Planing: Planes well, to a good finish
Resistance to Impregnation: Sapwood is treatable
Response to hand tools: Responds Readily
Routing recessing: Good in both routing and recessing.
Sanding: Responds well
Veneering qualities: Veneers easily, Veneers moderately easy
Steam bending: Moderate
Screwing: Fairly good characteristics, Screwing yields satisfactory results; Turning: Fairly Difficult to Very Difficult
Painting: Good; Polishing: Very good; Staining: Stains well;
- Numerical data Metric
- Numerical data English
- Strength properties
- References
 |
 |
 |
 |
Item |
Green |
Dry |
Metric |
Specific Gravity |
0,62 |
0,65 |
|
Density |
|
833 |
kg/m3 |
Bending Strength |
907 |
1370 |
kg/cm2 |
Crushing Strength |
78 |
111 |
kg/cm2 |
Hardness |
|
867 |
kg |
Impact Strength |
|
|
cm |
Shearing Strength |
|
160 |
kg/cm2 |
Stiffness |
143 |
169 |
1000 kg/cm2 |
Tangential Shrinkage |
|
|
% |
Radial Shrinkage |
4 |
|
% |
Weight |
897 |
769 |
kg/m3 |
Maximum Load |
|
|
cm-kg/cm3 |
Toughness |
|
277 |
cm-kg |
Static Bending |
600 |
759 |
kg/cm2 |
|
 |  |  |  | Item | Green | Dry | English | Bending Strength | 12903 | 19490 | psi | Crushing Strength | 1117 | 1583 | psi | Density | | 52 | lbs/ft3 | Hardness | | 1913 | lbs | Maximum Crushing Strength | 6600 | 9595 | psi | Shearing Strength | | 2287 | psi | Static Bending | 8546 | 10800 | psi | Stiffness | 2036 | 2416 | 1000 psi | Toughness | | 241 | inch-lbs | Specific Gravity | 0.62 | 0.65 | | Weight | 56 | 48 | lbs/ft3 | Radial Shrinkage | 4 | | % | Tangential Shrinkage | 8 | | % | |
Max. crushing strength = high 0 Shearing strength (parallel to grain) = medium 0 Modulus of Elasticity (stiffness) = high 0 Bending strength (MOR) = high 0 Density (dry weight) = 61-67 lbs/cu.ft 1 Shrinkage, Tangential = fairly large Shrinkage, Radial = moderate Shrinkage, Radial = small Bending strength (MOR) = medium Shrinkage, Tangential = moderate Shrinkage, Tangential = large Modulus of Elasticity (stiffness) = medium Max. crushing strength = medium Density (dry weight) = 53-60 lbs/cu. ft Shrinkage, Radial = large Shrinkage, Radial = fairly large Shearing strength (parallel to grain) = low Shearing strength (parallel to grain) = high Modulus of Elasticity (stiffness) = low Density (dry weight) = 46-52 lbs/cu. ft. Density (dry weight) = 67-75 lbs/cu. ft Bending strength (MOR) = low Shrinkage, Tangential = small Max. crushing strength = very high Hardness (side grain) = medium Hardness (side grain) = hard Bending strength (MOR) = very high
Ali, M.O., Yakub, M.D. and Bhattacharjee, D.K.,1972,Physical and mechanical properties of Toon, Bhadi and Eucalyptus,Bangladesh FRI, Chittagong Bulletin 3 Timber Physics SeriesAlston, A.S.,1966,Powder Post Beetle Lyctus Species,Fiji Forestry Department, Suva. Fiji timbers and their uses No.6Banks, 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.48Berni, 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 ResearchBoas, I.H.,1947,The Commercial Timbers of Australia - Their Properties and Uses,Council for Scientific and Industrial Research, MelbourneBolza, E., Keating, W.G.,1972,African Timbers - the Properties, Uses and Characteristics of 700 Species,C.S.I.R.O. Div. of Building ResearchBolza, E., Kloot, N.H.,1972,The Mechanical Properties of 56 Fijian Timbers,Australia C.S.I.R.O. Division of Forest Products Technological Paper,No.,62Chinchole, P.R., Salgiya, S.C.,1971,Anatomical and Chemical Characteristics of Indian Hardwoods with Special,Reference to their Suitability for Pulp: Part IV Eucalyptus citriodora,,Terminalia tomentosa, Strychnos niuxvomica,Indian Pulp and Paper 26(1/6) pp7-13Fiji Forestry Department,1967,The Properties and Potential Uses of the Exotic Species 2- Lemon Scented,Gum (E.citriodora) A Summary of C.S.I.R.O. Investigations,Fiji Timbers and their Uses No.24, Department of Forestry, Suva, FijiFiji Forestry Department,1981,The Properties and Uses of 43 Indigenous and Exotic Timbers,Fiji Forestry Department, Fiji Timbers and their Uses No.71Hillis, 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,1Poynton, R.J.,1957,Notes on Exotic Forest Trees in South Africa (Second Edition, Revised,South African Forestry Department Bulletin No.38Queensland Department of Forestry,1987,Timber Species - Spotted Gum (Eucalyptus maculata, E. citriodora, E.,henryi,Queensland Deparment of Forestry, Timber Utilisation Branch, Timber,Species No. 14Scott, 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.1Shukla, N.K. and Rajput, S.S.,1983,Physical and Mechanical Properties of Eucalypts grown in India,Indian Forester 109(112) 933-43Smith, W.J., W.T. Knyaston, M.L. Cause, and J.G. Grimmett. 1991. Building Timbers - Properties and Recommendations for their Uses in Queensland.Technical Pamphlet No. 1. Queensland Forest Service, Department of Primary Industries, Queensland, Australia.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
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