
Hoop pine (Araucaria cunninghamii)
Family: Araucariaceae
Common names: Australian araucaria, Bunya bunya, Hoop pine, Norfolk Island pine, Pin colonnaire, Sapin de montagne
Distributed in: Australia, India, Indonesia, Kenya, Papua New Guinea, South Africa (Africa, Oceania and S.E. Asia)
Distribution overview: Australia (New South Wales, Queensland), Indonesia (Irian Jaya), Papua New Guinea. An emergent tree which occurs mainly in Fagaceae forest above 1000m up to 2745m. Relatively dense stands are found in forest on loam, clay, sand or peat soils on ridges, sometimes on swampy terrain. In Australia, it is scattered in rainforest. In New Guinea associated species include Araucaria hunsteinii, Castanopsis, Lithocarpus, Flindersia, Elaeocarpus, Podocarpus and Toona and in Australia Flindersia zanthoxyla, F. australis, F. pubescens, Dysoxylum spp., Ceratopetalum apetalum and the members of Lauraceae and Celastraceae are associated.
Common uses: Balusters, Bedroom suites, Boat building, Boxes and crates, Broom handles, Brush backs & handles, Building construction, Building materials, Cabinetmaking, Canoes, Casks, Chairs, Chests, Concealed parts (Furniture), Construction, Decorative plywood, Desks, Dining-room furniture, Domestic flooring, Dowell pins, Dowells, Drawer sides, Excelsior, Fine furniture, Floor lamps, Flooring, Furniture , Furniture components, Furniture squares or stock, Handles, Hatracks, Interior construction, Interior trim, Joinery, Ladders , Light construction, Moldings, Paneling , Pulp/Paper products, Shipbuilding, Tool handles, Turnery, Vehicle parts
Environment profile: Status has not been officially assessed
Tree size: Trunk diameter is 100-150 cm
Colors: the heart isTurn reddish brown upon exposure, Yellowand the sapwoodWhitish, Yellow.The grain isModerately to severely interlocked, the textureFineand the lusterMedium
Natural durability: Susceptible to attack from termites (Isoptera), Susceptible to insect attack
Odor: No specific smell or taste
Kiln Schedules: Dry at a moderate speed
Kiln Drying Rate: Naturally dries at a moderate speed
Drying Defects: May check, May warp
Ease of Drying: Slowly
Blunting Effect: Moderate
Boring: Fairly difficult to very difficult
Carving: Fairly difficult to carve
Cutting Resistance: Easy to saw
Gluing: Fairly Easy to Very Easy
Moulding: Fairly Easy to Very Easy
Movement in Service: Fairly Easy to Very Easy
Nailing: Very Good to Excellent
Planing: Planes fairly well but cutters may require frequent sharpening
Resistance to Impregnation: Sapwood is permeable
Response to hand tools: Moderate working qualities
Sanding: Fairly Easy to Very Easy
Veneering qualities: Soaking treatment helps to dissolve the white abrasive deposits in timber , Steaming recommended
Steam bending: Poor to Very Poor Results
Painting: Fairly Easy to Very Easy
; Polishing: Fair to Good;
- Numerical data Metric
- Numerical data English
- Strength properties
- References
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 |
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Item |
Green |
Dry |
Metric |
Specific Gravity |
0,36 |
0,48 |
|
Density |
|
480 |
kg/m3 |
Bending Strength |
461 |
804 |
kg/cm2 |
Crushing Strength |
32 |
65 |
kg/cm2 |
Hardness |
|
334 |
kg |
Impact Strength |
|
38 |
cm |
Shearing Strength |
|
106 |
kg/cm2 |
Stiffness |
93 |
115 |
1000 kg/cm2 |
Tangential Shrinkage |
4 |
|
% |
Radial Shrinkage |
2 |
|
% |
Weight |
464 |
384 |
kg/m3 |
Maximum Load |
|
|
cm-kg/cm3 |
Toughness |
|
81 |
cm-kg |
Static Bending |
274 |
562 |
kg/cm2 |
|
 |  |  |  | Item | Green | Dry | English | Bending Strength | 6563 | 11442 | psi | Crushing Strength | 469 | 936 | psi | Density | | 30 | lbs/ft3 | Hardness | | 737 | lbs | Impact Strength | | 15 | inches | Maximum Crushing Strength | 3538 | 6319 | psi | Shearing Strength | | 1513 | psi | Static Bending | 3910 | 7997 | psi | Stiffness | 1323 | 1644 | 1000 psi | Toughness | | 71 | inch-lbs | Specific Gravity | 0.36 | 0.48 | | Weight | 29 | 24 | lbs/ft3 | Radial Shrinkage | 2 | | % | Tangential Shrinkage | 4 | | % | Volumetric Shrinkage | 9 | | % | |
Bending strength (MOR) = low Modulus of Elasticity (stiffness) = very low Max. crushing strength = medium Shearing strength (parallel to grain) = low Max. crushing strength = low Density (dry weight) = 31-37 lbs/cu. ft. Shearing strength (parallel to grain) = very low Modulus of Elasticity (stiffness) = low Toughness-Hammer drop (Impact Strength) = very low Shrinkage, Tangential = very small Shrinkage, Radial = very small Resists wearing and marring Resists denting and marring Modulus of Elasticity (stiffness) = medium Medium weight High in density Fairly hard Density (dry weight) = 23-30 lbs/cu. ft. Density (dry weight) = 15-22 lbs/cu. ft. Compression strength (parallel to grain) = high Bending strength (MOR) = very high
Chudnoff, M.,1984,Tropical Timbers of the World,U.S.A. Department of Agriculture, Forest Service, Forest Products,Laboratory, Madison.Desch, H. E. 1954. Manual of Malayan Timbers - Volume II. Malayan Forest Records, No. 15. Malaya Publishing House Ltd., Singapore.Kloot, N. H. and E. Bolza.1961.Properties of Timbers Imported into Australia.Technological Paper No. 12.Division of Forest Products, Commonwealth Scientific and Industrial Research Organization, Melbourne, Australia.Limaye, V.D. 1954. Grouping of Indian Timbers and their Properties, Uses and Suitability. Indian Forest Records, New Series. Timber Mechanics, Vol. 1, No. 2, Forest Research Institute, Dehra Dun, India.Limaye, V.D. and B.R. Sen. 1953. Weights and Specific Gravities of Indian Woods.Indian Forest Records, New Series. Timber Mechanics, Vol. 1, No. 4, Forest Research Institute, Dehra Dun, India.Troup, R.S. 1909. Indian Woods and Their Uses. The Indian Forest Memoirs, Economic Products Series, Volume 1, No. 1. Superintendent, Government Printing, Calcutta, India.
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