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Jarrah
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

Audas, J.W.,Native Trees of Australia,Whitcombe & Tombs PTY. LtdBanks, 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.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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