Australian agathis (Agathis palmerstonii)
Family: Araucariaceae
Common names: Australian agathis, Kauri, North Queensland kauri, North Queensland kauri pine, Northern kauri, Queensland kauri, Queensland kauri pine
Distributed in: Australia (Oceania and S.E. Asia)
Common uses: Boxes and crates, Cabinetmaking, Flooring, Food containers, Furniture, Joinery, Matches, Musical instruments, Paneling, Plywood, Turnery, Vats
Tree size: Trunk diameter is 300-350 cm
Colors: the heart isWhite, White to creamand the sapwoodRed, White.The grain isStraight, the textureFine
Natural durability: Susceptible to attack from termites (Isoptera), Susceptible to insect attack
Kiln Schedules: Kiln Drying Rate (in days) is fairly rapid
Kiln Drying Rate: Rapid (<10 days for boards < 32 mm, to <30 days for boards >= 63 mm)
Drying Defects: Internal Honeycombing Possible, Slight collapse and honeycomb
Ease of Drying: Slowly
Tree Identification: Bole/stem form is cylindrical
Comments: General finishing qualities are rated as good
Gluing: Fairly Easy to Very Easy
Nailing: Holds nails well, Very Good to Excellent
Resistance to Impregnation: Sapwood is permeable
Response to hand tools: Easy to machine
Veneering qualities: Veneers easily, Veneers moderately easy
Steam bending: Moderate
Polishing: Very Good to Excellent; Staining: Very Good to Excellent;
- Numerical data Metric
- Numerical data English
- Strength properties
- References
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| Item |
Green |
Dry |
Metric |
| Specific Gravity |
|
|
|
| Density |
|
448 |
kg/m3 |
| Bending Strength |
429 |
674 |
kg/cm2 |
| Crushing Strength |
225 |
380 |
kg/cm2 |
| Hardness |
|
144 |
kg |
| Impact Strength |
|
|
cm |
| Shearing Strength |
|
77 |
kg/cm2 |
| Stiffness |
79 |
92 |
1000 kg/cm2 |
| Tangential Shrinkage |
|
|
% |
| Radial Shrinkage |
3 |
|
% |
| Weight |
432 |
384 |
kg/m3 |
| Maximum Load |
|
|
cm-kg/cm3 |
| Toughness |
|
|
cm-kg |
| Static Bending |
|
|
kg/cm2 |
|
 |  |  |  | | Item | Green | Dry | English | | Bending Strength | 6111 | 9589 | psi | | Density | | 28 | lbs/ft3 | | Hardness | | 319 | lbs | | Maximum Crushing Strength | 3206 | 5405 | psi | | Shearing Strength | | 1107 | psi | | Stiffness | 1131 | 1321 | 1000 psi | | Weight | 27 | 24 | lbs/ft3 | | Radial Shrinkage | 3 | | % | | Tangential Shrinkage | 6 | | % | |
Bending strength (MOR) = low Density (dry weight) = 31-37 lbs/cu. ft. Max. crushing strength = medium Shearing strength (parallel to grain) = very low Modulus of Elasticity (stiffness) = very low Max. crushing strength = low Density (dry weight) = 23-30 lbs/cu. ft. Shrinkage, Tangential = small Shrinkage, Radial = small Shearing strength (parallel to grain) = low Modulus of Elasticity (stiffness) = low Hardness (side grain) = very soft Density (dry weight) = 15-22 lbs/cu. ft.
Boas, I.H.,1947,The Commercial Timbers of Australia - Their Properties and Uses,Council for Scientific and Industrial Research, MelbourneBolza, E., Kloot, N.H.,1963,The Mechanical Properties of 174 Australian Timbers,C.S.I.R.O. Division of Forest Products Technological Paper,No.25Brown, W.H.,1978,Timbers of the World, No. 8 Australasia,TRADA, Red Booklet SeriesClifford, N.,1957,Timber Identification for the Builder and Architect,Leonard Hill (Books) LTD. LondonDadswell, H.E., Eckersley, A.M.,1935,The Identification of the Principal Commercial Australian Timbers other,than eucalyptus,Australian C.S.I.R.O. Bulletin NO.90Dallimore, W. and Jackson, A. Bruce,1966,A Handbook of Coniferae and Ginkgoaceae Fourth Ed. Revised by S.G.,Harrison,Edward Arnold (Publishers) Ltd. LondonForest Products Research Laboratory U.K.,1957,A Handbook of Softwoods,Department of Scientific and Industrial Research Forest Products Research,HMSOForest Products Research Laboratory, U.K.,1945,A Handbook of Empire Timbers,Department of Scientific and Industrial Research Forest Products ResearchForestry Commission of New South Wales,1987,Timbers used in New South Wales for Domestic Buildings,Forestry Commission of New South Wales, Technical Publication No.6Gay, 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.277Hall, N., Et al,1972,The use of trees and shrubs in the dry country of Australia,Australian Government, Department of National Development, Forest and,Timber Bureau, CanberraHoward, 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 CuttingKloot, N.H., Bolza, E.,1961,Properties of Timbers Imported into Australia,C.S.I.R.O. Forest Products Division Technological Paper,No.12Patterson, D.,1988,Commercial Timbers of the World, 5th Edition,Gower Technical PressStewart, A.M., Kloot, N.H.,1957,Mechanical Properties of Timbers,C.S.I.R.O., Australia Bulletin,No.279The Australian Timber Journal & Building Products, Merchandiser,1969,Timber Durability and Preservation,Supplement to Australian Timber Journal 35(4) Tech. Timb. Guide No.8
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