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Ditta 5
Indirizzo: via dei platani 4 liguria
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Ditta 4
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Ditta 2
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Ditta 1
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Aripa
Aripa (Parkia javanica)

Family: Leguminosae

Common names: Aripa, Bagin, Belian landak, Bullisan, Kedaung, Kerayong, Kupang, Kuyug, Maganhok, Petai, Petai kerayong, Petai meranti, Porcupine belian, Riang, Sator

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

Common uses: Boat building (general), Boxes and crates, Canoes, Fuelwood, Heavy construction, Joinery, Light construction, Matches, Millwork, Plywood, Posts, Pulp/Paper products

Tree size: Trunk diameter is 100-150 cm

Colors: the heart isYellow, Yellow to golden-yellow to orangeand the sapwoodWhite to yellow, Yellow.The grain isStraight, the textureMedium coarse to coarseand the lusterLustrous

Natural durability: Susceptible to attack from termites (Isoptera), Susceptible to insect attack

Kiln Drying Rate: Naturally dries slowly

Drying Defects: Checking, Distortion

Ease of Drying: Slowly

Tree Identification: Bole/stem form is buttressed

Comments: General finishing qualities are rated as good

Boring: Fairly easy to very easy

Cutting Resistance: Moderate to saw

Gluing: Fairly Easy to Very Easy

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, Pre-Boring Recommended

Planing: Very Good to Excellent

Resistance to Impregnation: Resistant sapwood

Response to hand tools: Fairly Difficult to Difficult to Work

Veneering qualities: Veneers easily, Veneers moderately easy

Screwing: Fairly Easy to Very Easy ; Turning: Very Good to Excellent Results

Polishing: Fair to Good; Staining: Staining (Characteristic) = coloured water-soluble extract ;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity
Density 480 kg/m3
Bending Strength 429 674 kg/cm2
Crushing Strength 275 449 kg/cm2
Hardness 451 kg
Impact Strength cm
Shearing Strength 109 kg/cm2
Stiffness 71 84 1000 kg/cm2
Tangential Shrinkage %
Radial Shrinkage 2 %
Weight 464 400 kg/m3
Maximum Load cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English
Bending Strength 6111 9589 psi
Density 30 lbs/ft3
Hardness 995 lbs
Maximum Crushing Strength 3916 6397 psi
Shearing Strength 1560 psi
Stiffness 1017 1199 1000 psi
Weight 29 25 lbs/ft3
Radial Shrinkage 2 %
Tangential Shrinkage 5 %

Density (dry weight) = 31-37 lbs/cu. ft.
Density (dry weight) = 23-30 lbs/cu. ft.
Shrinkage, Tangential = very small
Shrinkage, Tangential = small
Shrinkage, Radial = very small
Shrinkage, Radial = small
Shearing strength (parallel to grain) = low
Modulus of Elasticity (stiffness) = very low
Max. crushing strength = medium
Hardness (side grain) = soft
Bending strength (MOR) = low

Browne, F.G.,1955,Forest Trees of Sarawak and Brunei and their Products.,Government Printing Office, Kuching, SarawakCortes, R.T., Nambananda, P.,1947,Fibre lenght of Anilau (Columbia serratifolia) Hinlaumo (Mallotus,ricinoides) and Kupang (Parkia javanica,Philippine Journal of Forestry 5(1) pp50-70Desch, H.E.,1954,Manual of Malayan Timbers (2 vols,Malayan Forest Records,no.15Kraemer, J.H.,1951,Trees of the Western Pacific Region,West Lafayette, Indiana U.S.A.Ramesh, Rao K., Purkayastha, S.K.,1972,Indian Woods - Their Identification Properties and Uses,Dehra Dun India,Vol. 3Reyes, L.J.,1938,Philippine Woods,Commonwealth of the Philippines Department of Agriculture and Commerce,Technical Bulletin,No.7Sono, P.,1974,Merchantable Timbers of Thailand.,Forest Products Research Division, Royal Forest Department, Bangkok,,Thailand.
*Come interpretare i dati (manleva su eventuali imprecisioni)