Jarrah (Eucalyptus marginata)
Family: Myrtaceae
Common names: Jarrah
Distributed in: Australia (Oceania and S.E. Asia)
Distribution overview: Found in coastal belt in the dry savannah in Southwestern Australia. Usually grows in gravely soil.
Common uses: Agricultural implements, Barge fenders, Beams, Boat building (general), Bridge beams, Bridge construction, Bridge joists, Building materials, Cabinetmaking, Carvings, Crossties, Decks, Decorative veneer, Docks, Dockwork, Domestic flooring, Door, Exterior trim & siding, Exterior uses, Factory flooring, Figured veneer, Flooring, Flooring: commercial heavy traffic, Flooring: industrial heavy traffic, Furniture, Handles, Harbor work, Heavy construction, Joinery, Joists, Light construction, Marine construction, Mine timbers, Musical instruments: piano, Naval architecture, Paneling, Parquet flooring, Pile-driver cushions, Piling, Planks, Plywood, Poles, Raft floats, Rafters, Rafts, Railroad ties, Roofing, Shafts/Handles, Shingles, Shipbuilding, Sporting Goods, Structural work, Sub-flooring, Tool handles, Toys, Turnery, Vats, Veneer, Wharf construction
Product sources: The most widely harvested of the Eucalyptus timbers, Jarrah is available on the world market at moderate prices, but it is plenttiful within its native Australia at a low price.
Environment profile: Status has not been officially assessed
Tree size: Trunk diameter is 200-250 cm
Colors: the heart isReddish brown, Yellowand the sapwoodRed, Yellow.The grain isWith distinct light and dark bands, the textureMedium coarse
Natural durability: Very durable, Wood is fire-resistant
Odor: No specific smell or taste
LightInduced Color Change: Darker
Kiln Schedules: Uk = C
Kiln Drying Rate: Slow (18-28 days for boards < 32 mm, to 52-84 days for boards >= 63 mm)
Drying Defects: Slight surface checking, Slight twist/warp
Ease of Drying: Slowly
Tree Identification: Bole/stem form is straight
Comments: Dense General finishing qualities are rated as good Hard and strong Heavy High resistance to wear
Blunting Effect: Moderate
Boring: Use very sharp cutting edges to prevent grain from tearing
Cutting Resistance: Material with interlocked grain can be difficult.
Gluing: Satisfactory gluing properties
Nailing: Pre-Boring Recommended, Pre-boring recommended
Planing: Very sharp cutting edges are required to produce a smooth surface
Resistance to Impregnation: Sapwood is permeable
Resistance to Splitting: Poor
Response to hand tools: Moderate working qualities
Sanding: Fairly Easy to Very Easy
Veneering qualities: Suitable for peeling, Suitable for slicing
Steam bending: Poor to Very Poor Results
Screwing: Pre-boring recommended, Screwing yields good results; Turning: Attractive grain when turned
Polishing: Very Good to Excellent; Staining: Finish is generally good; Varnishing: Good;
- Numerical data Metric
- Numerical data English
- Strength properties
- References
 |
 |
 |
 |
Item |
Green |
Dry |
Metric |
Specific Gravity |
0,63 |
0,72 |
|
Density |
|
833 |
kg/m3 |
Bending Strength |
681 |
1091 |
kg/cm2 |
Crushing Strength |
84 |
120 |
kg/cm2 |
Hardness |
|
817 |
kg |
Impact Strength |
|
|
cm |
Shearing Strength |
|
150 |
kg/cm2 |
Stiffness |
107 |
129 |
1000 kg/cm2 |
Tangential Shrinkage |
|
|
% |
Radial Shrinkage |
6 |
|
% |
Weight |
785 |
624 |
kg/m3 |
Maximum Load |
|
|
cm-kg/cm3 |
Toughness |
|
144 |
cm-kg |
Static Bending |
443 |
702 |
kg/cm2 |
|
 |  |  |  | Item | Green | Dry | English | Bending Strength | 9695 | 15531 | psi | Crushing Strength | 1201 | 1715 | psi | Density | | 52 | lbs/ft3 | Hardness | | 1803 | lbs | Maximum Crushing Strength | 5629 | 8930 | psi | Shearing Strength | | 2137 | psi | Static Bending | 6311 | 9996 | psi | Stiffness | 1529 | 1848 | 1000 psi | Toughness | | 125 | inch-lbs | Specific Gravity | 0.63 | 0.72 | | Weight | 49 | 39 | lbs/ft3 | Radial Shrinkage | 6 | | % | Tangential Shrinkage | 9 | | % | |
Bending strength (MOR) = medium 0 Max. crushing strength = high 0 Density (dry weight) = 46-52 lbs/cu. ft. 0 Hardness (side grain) = medium 0 Density (dry weight) = 53-60 0 Shrinkage, Radial = fairly large Shrinkage, Tangential = large Density (dry weight) = 61< Density (dry weight) = 38-45 lbs/cu. ft. Shrinkage, Tangential = moderate Toughness (total work) = very low Toughness (total work) = low Shrinkage, Tangential = fairly large Shrinkage, Radial = moderate
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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.48Banks, 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]Banks, C.H.,1970,The Durability of South African Wood and Wood Base Building Materials,South African Forestry Journal,No.75Boas, 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. 1963. The Mechanical Properties of 174 Australian Timbers. Technological Paper No. 25. Division of Forest Products, Center for Scientific and Industrial Organization (CSIRO, Melbourne, AustraliaBolza, E., Kloot, N.H.,1963,The Mechanical Properties of 174 Australian Timbers,C.S.I.R.O. Division of Forest Products Technological Paper,No.25Bolza, E.,1976,Timber and Health,Div. Building Res. C.S.I.R.O. AustraliaBrown, W.H.,1978,Timbers of the World, No. 8 Australasia,TRADA, Red Booklet SeriesChudnoff, M.,1984,Tropical Timbers of the World,U.S.A. Department of Agriculture, Forest Service, Forest Products,Laboratory, Madison.Farmer, R.H.,1972,Handbook of Hardwoods,HMSOForestry Commission of New South Wales,1987,Timbers used in New South Wales for Domestic Buildings,Forestry Commission of New South Wales, Technical Publication No.6Forests Products Research Laboratory, U.K.,1956,A Handbook of Hardwoods,Forest Products Research Laboratory, Princes Risborough, Department of,Science and Industrial Research, Building Research EstablishmentGay, 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.277Hillis, W.E. and A.G. Brown, Editors. 1984. Eucalyptus for Wood Production. Commonwealth Scientific and Industrial Research Organization, Academic Press, Australia.HMSO.1972.Handbook of Hardwoods, 2nd Edition.Revised by R.H. Farmer.Department of the Environment, Building Research Establishment, Princes Risborough Laboratory, Her Majesty's Stationery Office, London.Howard, A.L.,1948,A Manual of Timbers of the World.,Macmillan & Co. Ltd. London 3rd ed.I.U.F.R.O.,1973,Veneer Species of the World,Assembled at F.P.L. Madison on behalf of I.U.F.R.O. Working Party on,Slicing and Veneer CuttingJackson, A. and D. Day.1991.Good Wood Handbook - The Woodworker's Guide to Identifying, Selecting and Using the Right Wood.Betterway Publications, Cincinnati, Ohio.Kaiser, J.1994.Eucalyptus - The Gum from Down Under.Wood & Wood Products. January 1994, Page 48.Kline, M. 1985. Eucalyptus marginata - Jarrah. In A Guide to Useful Woods of the World, Flynn Jr., J.H., Editor. King Philip Publishing Co., Portland, Maine. Page 155.Kukachka, B.F.,1970,Properties of Imported Tropical Woods,Forest Research Paper FPL 125Lavers, G. M.1966.The Strength Properties of Timbers.Forest Products Research Bulletin, No. 50.Ministry of Technology, Her Majesty's Stationery Office, London.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)Lincoln, W.A. 1986. World Woods in Color. Linden Publishing Co. Inc., Fresno, California.NWFA.1994.Wood Species Used in Wood Flooring.Technical Publication No. A200. National Wood Flooring Association, Manchester, MO.Patterson, D.,1988,Commercial Timbers of the World, 5th Edition,Gower Technical PressRendle, B.J.,1969,World Timbers (3 Vols.,Ernest Benn Ltd. LondonScott, 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.1Stewart, A.M., Kloot, N.H.,1957,Mechanical Properties of Timbers,C.S.I.R.O., Australia Bulletin,No.279T.R.A.D.A.,1982,Timbers for river and sea constructions,TRADA Wood Information Section 0, Sheet 6Takahashi, A.,1978,Compilation of Data on the Mechanical Properties of Foreign Woods (Part,III) Africa,Shimane University, Japan, Research Report on Foreign Wood No. 7The Australian Timber Journal & Building Products, Merchandiser,1969,Timber Durability and Preservation,Supplement to Australian Timber Journal 35(4) Tech. Timb. Guide No.8U.S.D.A. Forest Service,1974,Wood Handbook,U.S.A. Department of Agriculture, Forest Service Handbook,72Wallis, N.K. 1956. Australian Timber Handbook. Sponsored by The Timber Development Association of Australia. Angus & Robertson, Ltd., 89 Castlereagh Street, Sydney, Australia.
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