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Fornitori

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

Sito web: www.pippo.it
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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
Tel.: +39 456 5664 54

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

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Tawa
Tawa (Beilschmiedia tawa)

Family: Lauraceae

Common names: Tawa

Distributed in: New Zealand (Oceania and S.E. Asia)

Common uses: Cooperages, Flooring, Furniture, Joinery, Millwork, Paneling, Plywood, Turnery, Veneer

Product sources: The ITTO reports that negligible quantities of timber are produced and exported from this species. Exporting countries include Liberia, Sierra Leone, Ivory Coast, Nigeria, and the Cameroons.

Tree size: Bole length is 10-20 m

Colors: the heart isWhite to cream, Yellow to golden-yellow to orangeand the sapwoodColor not distinct from heartwood, White to yellow.The grain isWavy, the textureMediumand the lusterMedium

Natural durability: Non durable, Susceptible to attack from powder post (Lyctid & Bostrychid) beetles

Silica Content: Moderate silica contact

Drying Defects: Slight surface checking

Ease of Drying: Easy

Blunting Effect: Blunting effect on machining is moderate

Cutting Resistance: Cutting Resistance with dry wood is easy

Gluing: Easy to glue

Nailing: Difficult to nail, Pre-boring recommended

Planing: Ease of planing is moderate

Resistance to Impregnation: Heartwood is permeable

Response to hand tools: Easy to machine

Screwing: Possible if prebored ; Turning: Fairly Easy to Very Easy

Polishing: Satisfactory; Staining: Finish is generally satisfactory ;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity
Density 705 kg/m3
Bending Strength 609 954 kg/cm2
Crushing Strength 296 468 kg/cm2
Hardness 526 kg
Impact Strength cm
Shearing Strength 132 kg/cm2
Stiffness 108 125 1000 kg/cm2
Tangential Shrinkage %
Radial Shrinkage %
Weight 689 544 kg/m3
Maximum Load cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English
Bending Strength 8670 13570 psi
Density 44 lbs/ft3
Hardness 1160 lbs
Maximum Crushing Strength 4218 6664 psi
Shearing Strength 1883 psi
Stiffness 1543 1781 1000 psi
Weight 43 34 lbs/ft3
Volumetric Shrinkage 11 %

Density (dry weight) = 46-52 lbs/cu. ft.
Density (dry weight) = 38-45 lbs/cu. ft.
Bending strength (MOR) = medium
Modulus of Elasticity (stiffness) = medium
Hardness (side grain) = soft
Modulus of Elasticity (stiffness) = low
Max. crushing strength = medium
Shrinkage, Volumetric = moderate
Shearing strength (parallel to grain) = medium
Shearing strength (parallel to grain) = low
Max. crushing strength = low
Max. crushing strength = high
Hardness (side grain) = medium
Bending strength (MOR) = low

Bier, H.,1983,The strength properties of small clear specimens of New Zealand-grown,timber,New Zealand Forest Service Forest Research Institute, FRI Bulletin No.41Brown, W.H.,1978,Timbers of the World, No. 8 Australasia,TRADA, Red Booklet SeriesChudnoff, M.,1984,Tropical Timbers of the World,U.S.A. Department of Agriculture, Forest Service, Forest Products,Laboratory, Madison.Farmer, R.H.,1972,Handbook of Hardwoods,HMSOFrance - C.T.F.T./C.T.B.,1982,Guide pour le Choix des Essences Deroulables-pour la fabrication du,contreplaque,C.T.F.T./C.T.B. FrancePatterson, D.,1988,Commercial Timbers of the World, 5th Edition,Gower Technical Press
*Come interpretare i dati (manleva su eventuali imprecisioni)