Merkus pine (Pinus merkusii)
Family: Pinaceae
Common names: Damar batu, Damar bunga, Huyam, Indo-China pine, Kayu sala, Kayu sugi, Merkus pine, Merkusfohre, Merkustall, Mindoro pine, Pine, Pinus, Sral, Sumatra pine, Sumatrakiefer, Tapulan, Tapulau, Thong mu, Tingyu, Tinshu, Tinyu, Tusam, Uyam
Distributed in: Cambodia, China, India, Indonesia, Laos, Malaysia, Myanmar, Philippines, South Africa, Thailand, Vietnam (Africa, Oceania and S.E. Asia)
Distribution overview: Merkus pine occurs in eastern Burma, Indochina, Sumatra, and the islands of Luzon and Mindoro in the Philippines. The species is also cultivated in Malaysia. It is the only member in the Pinus genus that is indigenous to regions south of the Equator.
Common uses: Bedroom suites, Boat building, Boxes and crates, Building construction, Building materials, Cabin construction, Cabinetmaking, Canoes, Casks, Chairs, Charcoal, Chests, Concealed parts (Furniture), Construction, Core Stock, Decorative plywood, Decorative veneer, Desks, Dining-room furniture, Domestic flooring, Dowell pins, Dowells, Drawer sides, Factory construction, Factory flooring, Figured veneer, Fine furniture, Floor lamps, Flooring, Furniture , Furniture components, Furniture squares or stock, Furniture, Hatracks, Heavy construction, Kitchen cabinets, Lifeboats, Light construction, Living-room suites, Matches, Mine timbers, Office furniture, Packing cases, Particleboard, Plywood, Poles, Railroad ties, Shipbuilding, Toothpicks, Veneer
Product sources: Timber produced by Merkus pine is often mixed and marketed with that from Benguet pine (P. insularis).Apart from timber, Merkus pine is also reported to produce high-quality oleo-resins.
Environment profile: Generally secure within most of its natural habitat, but note exceptions.
Tree size: Trunk diameter is 150-200 cm
Colors: the heart isYellow to golden-yellow to orange, Yellow, yellowish-red, yellowish-brown, or orange brown and the sapwoodWhite to yellow, Yellow.The grain isStraight, the textureUniformand the lusterSlightly lustrous
Natural durability: Untreated wood in contact with ground could decay in less than 5 years, Very little natural resistance to decay in ground contact
Odor: No specific taste
Kiln Drying Rate: Naturally dries quickly
Drying Defects: Slight surface checking, Staining
Ease of Drying: Reconditioning Treatement
Boring: Wood bores well, especially when dry
Carving: Carves well in dry condition
Cutting Resistance: Fairly good sawing characteristics, despite high resin content
Gluing: Moderate gluing properties
Mortising: Poor to Very Poor
Moulding: Very Good to Excellent
Movement in Service: Very Good to Excellent
Nailing: Good nail holding properties , Very Good to Excellent
Planing: Very Good to Excellent
Resistance to Impregnation: Resistant sapwood
Response to hand tools: Responds well to hand tools
Routing recessing: Responds well to routing operations
Sanding: Good sanding properties
Veneering qualities: Veneers easily, Veneers moderately easy
Steam bending: Poor to Very Poor Results
Screwing: Fairly Easy to Very Easy, Very Good to Excellent Results; Turning: Very Good to Excellent Results
Painting: Very Good to Excellent; Polishing: Material takes a high polish ; Staining: Very Good to Excellent; Varnishing: Very Good to Excellent;
- Numerical data Metric
- Numerical data English
- Strength properties
- References
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Item |
Green |
Dry |
Metric |
Specific Gravity |
0,54 |
0,59 |
|
Density |
|
673 |
kg/m3 |
Bending Strength |
718 |
1297 |
kg/cm2 |
Crushing Strength |
41 |
90 |
kg/cm2 |
Hardness |
|
509 |
kg |
Impact Strength |
71 |
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cm |
Shearing Strength |
|
103 |
kg/cm2 |
Stiffness |
136 |
170 |
1000 kg/cm2 |
Tangential Shrinkage |
|
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% |
Radial Shrinkage |
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% |
Weight |
|
|
kg/m3 |
Maximum Load |
0,63 |
|
cm-kg/cm3 |
Toughness |
|
395 |
cm-kg |
Static Bending |
348 |
777 |
kg/cm2 |
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| | | | Item | Green | Dry | English | Bending Strength | 10213 | 18448 | psi | Crushing Strength | 594 | 1281 | psi | Density | | 42 | lbs/ft3 | Hardness | | 1123 | lbs | Impact Strength | 28 | | inches | Maximum Crushing Strength | 4707 | 8414 | psi | Shearing Strength | | 1478 | psi | Static Bending | 4962 | 11053 | psi | Stiffness | 1944 | 2420 | 1000 psi | Toughness | | 343 | inch-lbs | Work to Maximum Load | 9 | | inch-lbs/in3 | Specific Gravity | 0.54 | 0.59 | | Weight | | 65 | lbs/ft3 | |
Modulus of Elasticity (stiffness) = high Hardness (side grain) = soft Very high bending strengthand high crushing strength Shrinkage, Tangential = very small Resists wearing and marring Resists denting and marring Modulus of Elasticity (stiffness) = medium Max. crushing strength = medium Max. crushing strength = high High in density Hardness = medium Bending strength (MOR) = medium Bending strength (MOR) = high
Chudnoff, M.,1984,Tropical Timbers of the World,U.S.A. Department of Agriculture, Forest Service, Forest Products,Laboratory, Madison.Desch, H. E. 1957. Manual of Malayan Timbers. Malayan Forest Records, 28(30):315-318.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,1Lauricio, F. M., Bellosillo, S. B., The Mechanical and Related Properties of Philippine Woods, The Philippine Lumber Journal, 12(5):A-H 787,1180,64,307Smith, N.J.H, J.T. Williams, D.L. Plucknett and J.P. Talbot.1992.Tropical Forests and their Crops.Comstock Publishing Associates, a division of Cornell University Press, Ithaca.WCMC. 1992. Conservation Status Listing - Trees and Timbers of the World. World Conservation Monitoring Center-Plants Programme, Cambridge, CB3 ODL, United Kingdom.
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