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Blunting Effect
Boring
Carving
Comments
Common Names
Common Uses
Countries of Distribution
Cutting Resistance
Distribution Overview
Drying Defects
Ease of Drying
Environmental Profile
Gluing
Grain
Heartwood Color
Luster
Mortising
Moulding
Movement in Service
Nailing
Natural Durability
Numerical Data
Odor
Planing
Polishing
References
Regions of Distribution
Resistance to Impregnation
Routing & Recessing
Sapwood Color
Scientific Name
Screwing
Silica Content
Staining
Steam Bending
Texture
Trade Name
Tree Size
Turning
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Common Names
New Guinea walnut, Senai, Senkuang
Regions of Distribution
Oceania and S.E. Asia
Countries of Distribution
[VIEW MAP]
Indonesia, Malaysia, Papua New Guinea, Philippines
Common Uses
Bedroom suites, Boat building, Cabinetmaking, Canoes, Chairs, Chests, Concealed parts (Furniture), Core Stock, Decorative plywood, Decorative veneer, Desks, Dining-room furniture, Domestic flooring, Dowell pins, Dowells, Drawer sides, Drum sticks, Excelsior, Factory flooring, Figured veneer, Fine furniture, Floor lamps, Flooring, Furniture , Furniture components, Furniture squares or stock, Hatracks, Joinery, Kitchen cabinets, Lifeboats, Living-room suites, Musical instruments , Office furniture, Organ pipes, Parquet flooring, Piano keys, Pianos , Plywood, Pulpwood, Shipbuilding, Veneer
Environmental Profile
| Status unknown due to inadequate information |
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| Status has not been officially assessed |
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Distribution Overview
Very limited quantities in Northern Queensland in Australia but spread throughout Papua New Guinea and other parts of South East Asia. A large tree that can attain 50m (170ft).
Heartwood Color
| Brown |
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| Red |
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| Pink |
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| Orangish cast |
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| Grey brown |
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| Dark brown with black bands |
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The heartwood has a gray-brown background color with an orange cast. The surface shows irregular, dark brown to black banding
Sapwood Color
| Yellow |
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| White |
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| Brown |
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| Red |
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| Wide |
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| Pinkish |
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| Pale yellow |
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| Grey |
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| Clearly differentiated from the heartwood |
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Grain
| Closed |
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| Interlocked |
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| Figure |
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| Wavy |
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| Stripe (figure) |
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| Striped figure |
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| Moderately interlocked and wavy |
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Quartersawn surfaces produce a broken striped figure
Texture
| Coarse |
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| Medium |
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| Medium |
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| Even textured |
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Luster
Natural Durability
| Perishable |
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| Non-resistant to powder post beetles |
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| Non-resistant to termites |
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| Non-durable |
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| Susceptible to attack by marine borers |
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| Moderately resistant to attack by termites |
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| Heartwood resistant to decay |
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Odor
| Has an odor |
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| No specific smell or taste |
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Silica Content
Drying Defects
| Distortion |
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| Thinner stock may warp |
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| Rapid drying may cause distortion and checking |
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Ease of Drying
| Rapidly |
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| Fairly Easy |
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| Little degrade |
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| Material in smaller dimensions requires care to minimize degrade |
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| Dries well under good controlled conditions |
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Tree Size
| Tree height is 20-30 m |
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| Tree height is 30-40 m |
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| Trunk diameter is 100-150 cm |
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Stems are straight and well-formed, with merchantable lengths of 65 to 80 feet (22 to 24 m)
Comments
New Guinea Walnut is not a true walnut
Blunting Effect
| Medium dulling effect on cutting edges |
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Boring
Carving
Cutting Resistance
Resistance to cutting is low, and the wood saws without difficulty.
Gluing
| Very Good to Excellent Results |
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| Fairly Easy to Very Easy |
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| Satisfactory gluing properties |
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Mortising
Moulding
Movement in Service
Nailing
| Fairly Easy to Very Easy |
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| Good nailing characteristics |
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Planing
| Very Good to Excellent Results |
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| Fair to Good Results |
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| Special attention required |
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| Responds well to hand and machine tools |
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| Moderate blunting effect on cutting edges |
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| Easy to plane |
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Tools should be kept very sharp in order to obtain smooth, clean surfaces
Resistance to Impregnation
| Permeable sapwood |
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| Permeable heartwood |
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| Resistant to preservative treatment |
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Routing & Recessing
Screwing
Turning
| Fair to Good Results |
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| Fairly Easy to Very Easy |
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Steam Bending
Polishing
| Fair to Good Results |
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| Surface Preparation |
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| Satisfactory results |
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Staining
| Satisfactory staining properties |
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Numerical Data
| Item | Green | Dry | English |
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| Bending Strength | 8350 | 11564 | psi |
| Crushing Strength | 608 | 1049 | psi |
| Density | | 45 | lbs/ft3 |
| Hardness | | 818 | lbs |
| Maximum Crushing Strength | 4214 | 6566 | psi |
| Shearing Strength | | 1558 | psi |
| Static Bending | 5321 | 7722 | psi |
| Stiffness | 1372 | 1627 | 1000 psi |
| Toughness | | 83 | inch-lbs |
| Specific Gravity | | 0.66 | |
| Weight | 44 | 36. | lbs/ft3 |
| Radial Shrinkage | 4 | | % |
| Tangential Shrinkage | 7 | | % |
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| Item | Green | Dry | Metric |
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| Bending Strength | 587 | 813 | kg/cm2 |
| Crushing Strength | 42 | 73 | kg/cm2 |
| Density | | 721 | kg/m3 |
| Hardness | | 371 | kg |
| Maximum Crushing Strength | 296 | 461 | kg/cm2 |
| Shearing Strength | | 109 | kg/cm2 |
| Static Bending | 374 | 542 | kg/cm2 |
| Stiffness | 96 | 114 | 1000 kg/cm2 |
| Toughness | | 95 | cm-kg |
| Specific Gravity | | 0.66 | |
| Weight | 705 | 576. | kg/m3 |
| Radial Shrinkage | 4 | | % |
References
Bolza, E., Kloot, N. H. 1966. The Mechanical Properties of 81 New Guinea Timbers. Technological Paper No. 41. Division of Forest Products, Center for Scientific and Industrial Organization (CSIRO, Melbourne, Australia.
Desch, H. E. 1957. Manual of Malayan Timbers - Volume I. Malayan Forest Records, No. 15. Malaya Publishing House Ltd., Singapore.
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
Lincoln, W.A. 1986. World Woods in Color. Linden Publishing Co. Inc., Fresno, California.
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