Northern silver ash (Flindersia pubescens)
Family: Rutaceae
Common names: Australian maple, Flindersia, New guinea silkwood, Northern silver ash, Queensland maple, Silkwood, Silkwood maple, Silver ash
Distributed in: Australia, Papua New Guinea (Oceania and S.E. Asia)
Distribution overview: Queensland, Australia and into Papua New Guinea.
Common uses: Bedroom suites, Building materials, Cabinetmaking, Chairs, Chests, Decorative veneer, Desks, Dining-room furniture, Drawer sides, Drum sticks, Excelsior, Figured veneer, Fine furniture, Furniture , Gunstocks, Interior construction, Joinery, Kitchen cabinets, Living-room suites, Musical instruments , Office furniture, Organ pipes, Paneling , Piano keys, Pianos , Radio - stereo - TV cabinets, Rifle stock, Sounding boards, Veneer, Violin bows, Violin, Wainscotting, Wardrobes, Xylophones
Environment profile: Status has not been officially assessed
Tree size: Trunk diameter is 100-150 cm
Colors: the heart isRed, Yellowand the sapwoodSapwood is considered narrow , Yellow.The grain isWavy, the textureMediumand the lusterSilky luster
Natural durability: Susceptible to insect attack, Very little natural resistance
Odor: Slightly scented
Kiln Schedules: T3-C2(4/4) US
Drying Defects: Expect slight collapse and honeycombing, Slight twist/warp
Ease of Drying: Fairly Easy
Radial - 3.5%
Shrinkage fom green to 12% MC
Tangential - 5.0
The material is reported to season satisfactorily.
Cutting Resistance: Moderate to fairly difficult to saw
Gluing: Good gluing properties
Mortising: Fairly Easy to Very Easy
Moulding: Fairly Easy to Very Easy
Movement in Service: Fairly Easy to Very Easy
Nailing: Fairly Easy to Very Easy, Good nailing properties
Planing: Torn grain is common machining defect
Resistance to Impregnation: Resistant sapwood
Response to hand tools: Easy to Work
Sanding: Contains alkaloids giving it good acid resistance
Polishing: Very Good to Excellent;
- Numerical data Metric
- Numerical data English
- Strength properties
- References
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Item |
Green |
Dry |
Metric |
Specific Gravity |
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|
|
Density |
|
544 |
kg/m3 |
Bending Strength |
695 |
1026 |
kg/cm2 |
Crushing Strength |
58 |
86 |
kg/cm2 |
Hardness |
|
533 |
kg |
Impact Strength |
|
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cm |
Shearing Strength |
|
125 |
kg/cm2 |
Stiffness |
105 |
130 |
1000 kg/cm2 |
Tangential Shrinkage |
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|
% |
Radial Shrinkage |
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% |
Weight |
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|
kg/m3 |
Maximum Load |
|
|
cm-kg/cm3 |
Toughness |
|
169 |
cm-kg |
Static Bending |
402 |
596 |
kg/cm2 |
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| | | | Item | Green | Dry | English | Bending Strength | 9898 | 14602 | psi | Crushing Strength | 839 | 1235 | psi | Density | | 34 | lbs/ft3 | Hardness | | 1176 | lbs | Maximum Crushing Strength | 4616 | 7928 | psi | Shearing Strength | | 1789 | psi | Static Bending | 5723 | 8477 | psi | Stiffness | 1499 | 1852 | 1000 psi | Toughness | | 147 | inch-lbs | Specific Gravity | 0.58 | 0.6 | | |
Bolza, E. and N.H. Kloot.1963.The Mechanical Properties of 174 Australian Timbers.Division of Forest Products Technological Paper No. 25.Commonwealth Scientific and Industrial Research Organization, Melbourne, Australia.Chudnoff, M.,1984,Tropical Timbers of the World,U.S.A. Department of Agriculture, Forest Service, Forest Products,Laboratory, Madison.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,1
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