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Fornitori

Ditta 5
Indirizzo: via dei platani 4 liguria
Tel.: +39 456 5664 54

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Ditta 4
Indirizzo: via dei platani 4 liguria
Tel.: +39 456 5664 54

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Ditta 3
Indirizzo: via dei platani 4 liguria
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Ditta 2
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Tel.: +39 456 5664 54

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Ditta 1
Indirizzo: via dei platani 4 liguria
Tel.: +39 456 5664 54

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Ditta 0
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Tel.: +39 456 5664 54

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Balau
Balau (Hopea papuana)

Family: Dipterocarpaceae

Common names: Balau, Ehang besi, Gagil, Giam, Gisok-gisok, Gointa, Hopea, Kaliot, Keilmen ogerie, Koha pilopilo, Koka-pilo-pilo, Lao-two, Light hopea, Linakiong, Magasusu, Manggachapui, Matajien, Matre, Merawan, Narek, Pasang keserup, Riheu, Sangal, Tjengal

Distributed in: Indonesia, Papua New Guinea (Oceania and S.E. Asia)

Common uses: Agricultural implements, Boat building (general), Bridge construction, Cabinetmaking, Decks, Flooring, Flooring: industrial heavy traffic, Furniture, Handles: general, Heavy construction, Joinery (external): ground contact, Joinery, Ladders, Light construction, Marine construction, Mine timbers, Paneling, Piling, Railroad ties, Turnery, Vehicle parts

Environment profile: Vulnerable

Tree size: Trunk diameter is 200-250 cm

Colors: the heart isYellow, Yellow to golden-yellow to orangeand the sapwoodWhite to yellow, Yellow.The grain isVariable figure, the textureMediumand the lusterMedium

Natural durability: Susceptible to insect attack, Very durable

LightInduced Color Change: Darker

Kiln Schedules: UK=E US=T6D2/T3D1 Fr=5

Kiln Drying Rate: Naturally dries slowly

Drying Defects: Slight twist/warp, Splitting

Ease of Drying: Slowly

Tree Identification: Bole/stem form is buttressed

Blunting Effect: Moderate

Boring: Fairly easy to very easy

Carving: Fairly Difficult to Very Difficult

Cutting Resistance: Fairly Difficult to Very Difficult to saw

Gluing: Moderate gluing properties

Mortising: Very Good to Excellent

Moulding: Very Good to Excellent

Movement in Service: Very Good to Excellent

Nailing: Poor to Very Poor , Pre-Boring Recommended

Planing: Very Good to Excellent

Resistance to Impregnation: Resistant sapwood

Response to hand tools: Responds Poorly

Routing recessing: Fairly Difficult to Very Difficult

Sanding: Very Good to Excellent Results

Veneering qualities: Veneers easily, Veneers moderately easy

Steam bending: Very Good to Excellent Results

Screwing: Fairly Difficult to Very Difficult, Pre-boring recommended; Turning: Very Good to Excellent Results

Painting: Fair to Good; Polishing: Very Good to Excellent; Staining: Finish is generally satisfactory; Varnishing: Very Good to Excellent;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity
Density 689 kg/m3
Bending Strength 834 1293 kg/cm2
Crushing Strength 485 699 kg/cm2
Hardness 451 kg
Impact Strength cm
Shearing Strength 139 kg/cm2
Stiffness 152 175 1000 kg/cm2
Tangential Shrinkage %
Radial Shrinkage 2 %
Weight 673 544 kg/m3
Maximum Load cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English
Bending Strength 11870 18400 psi
Density 43 lbs/ft3
Hardness 995 lbs
Maximum Crushing Strength 6899 9945 psi
Shearing Strength 1989 psi
Stiffness 2167 2494 1000 psi
Weight 42 34 lbs/ft3
Radial Shrinkage 2 %
Tangential Shrinkage 9 %

Density (dry weight) = 38-45 lbs/cu. ft. 0
Density (dry weight) = 46-52 lbs/cu. ft.
Modulus of Elasticity (stiffness) = high
Max. crushing strength = high
Bending strength (MOR) = high
Shrinkage, Tangential = fairly large
Shrinkage, Radial = very small
Shearing strength (parallel to grain) = medium
Hardness (side grain) = soft
Density (dry weight) = 53-60 lbs/cu. ft.
Bending strength (MOR) = medium
Shearing strength (parallel to grain) = low

Bolza, E., Kloot, N.H.,1976,The Mechanical Properties of 81 New Guinea Timbers,C.S.I.R.O. Div. Building Res. Tec.Paper (2nd series) 11Bolza, E.,1975,Properties and Uses of 175 Timber Species from Papua New Guinea and West,Irian,C.S.I.R.O. Div. Building Research Report,no.34Brown, W.H.,1978,Timbers of the World, No. 8 Australasia,TRADA, Red Booklet SeriesEddowes, P.J.,1977,Commercial Timbers of Papua New Guinea: Their Properties and Uses,Hebano Press, Port Moresby, Papua New GuineaFundter, J.M.,1982,Names for Dipterocarp timbers and trees from Asia,Pudoc, Wageningen, NetherlandsKeating, 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,1Kraemer, J.H.,1951,Trees of the Western Pacific Region,West Lafayette, Indiana U.S.A.Papua New Guinea Department of Forests,1972,New Horizons,Forestry in Papua New Guinea,Jacaranda Press PTY Ltd, BrisbanePapua New Guinea,1982,Papua New Guinea timbers - technical data,Forest Industries Council P.N.G.
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